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Supposed First DirectX 11 Benchmark Released for Download

Ryan Whitwam — Mon, 26 Oct 2009 20:15:45 -0500

If you have a shiny new DirectX 11 card taking up space in your case, this may be of interest to you. The first DX11-specific benchmark has been released by Unigine Corp. The demo is called “Heaven” and runs on the company’s proprietary Unigine engine.

Unigine have released two previous GPU benchmarking demos called “Sanctuary” and “Tropics”. Like those programs, the new DX11 benchmark is available for free. Heaven has support for OpenGL, DirectX 9, 10, and 11. So regardless of your hardware, it should run as long as you have at least 256 MB of VRAM. There’s even support for AMD’s new Eyefinity technology.

You will, however, need .NET framework 2.0, OpenAL, and your card’s latest stable drivers. If you want to take your card for a spin, you can get the Heaven demo here.

3DMark Drama: Intel Employee Claims AMD Never Held The Top Score

Justin Kerr — Sun, 01 Feb 2009 19:31:04 -0600

It’s no secret that we here at Maximum PC are fans of Intel’s new Core i7. In fact, Intel has held a place of distinction in our best of the best round up pretty consistently now ever since Athelon’s day came and went several years ago. Despite this fact, we are pretty fickle with our affections, and are all secretly still rooting for the underdog. We are also the first to admit that we are glad AMD is still around to keep Intel on its toes. Though both Phenom & Phenom II failed to set the world on fire, we were all pretty impressed when we discovered how much overclocking headroom we received as a result of the die shrink. We were even more excited when we saw the videos of AMD pushing the new CPU past 6.5Ghz, setting a new record in terms of clock speed.

Intel however, never wanting to concede its speed crown, was quick to go on the attack. In an email exchange with TGDaily, an Intel employee pointed out that the AMD 3DMark score of 45,474 submitted on January 12^th 2009 was actually 1,170 points lower than a Core i7 score turned in by Intel just 8 days earlier. He also stated that the AMD results were achieved with unapproved drivers, and curiously were only run when the clock speed was at 4.481 Ghz. So as for who holds the 3DMark speed crown, I guess it all depends on who you ask.

It’s good to know that even if Phenom II didn’t quite bring them up to where they need to be, at least they have Intel taking notice of them again. And I for one can’t wait until I see the portable liquid helium cooling system that lets me duplicate these AMD scores at home! They are working on that right?

A-Data Sets New SuperPi Benchmarking Record

Paul Lilly — Fri, 23 Jan 2009 11:09:45 -0600

Last year it was Biostar -- and not Asus, DFI, or Gigabyte -- who set a frontside bus world record with its Biostar TPower I45 motherboard, and further blurring the lines between traditional enthusiast branding and companies better known for taking the budget end of the spectrum, A-Data -- not OCZ, Corsair, or Kingston -- has just broken a benchmarking record of its own.

"A-DATA® Technology Co., Ltd., a worldwide leading manufacturer in high performance memory products, announced today that its XPG™ DDR3 memory modules have broke a new world record on SuperPi 32m," A-Data stated in a press release. "The record was set by utilizing the DFI Lanparty UT X58 motherboard and XPG X Series v2.0 memory, the DDR3-2133X v2.0 2GBx3 triple-channel kit."

The new record now sits at 6min 40sec 360ms, which required overclocking A-Data's triple-channel DDR3-2133X v2.0 kit to 2237MHz with 8-7-7-21 latencies. A-Data didn't say how much voltage it took to reach that frequency, but if we had to guess, we'd say it ran high. The same kit comes rated at 2.05V-2.15V with 10-10-10-30 latencies at its stock frequency.

Image Credit: A-Data

How to Build a Kick-ass $800 Gaming PC

Benson Hong & Florence Ion — Thu, 18 Dec 2008 12:00:00 -0600

In October, we spec’ed out a respectable $800 gaming PC in our monthly Buyer’s Guide feature. While the price and parts looked promising, we had to see for ourselves if this sub-$1000 system could hold its ground against today’s top rigs. After all, if you don’t need to spend your next month’s paycheck on performance parts, why should you?

We had to make some careful choices to keep this machine within our constrained budget, but in the end we were surprised by this little PC’s kick ass performance. Want to learn how to build it yourself? We’ll walk you through our meticulous build process, explain why we chose each component, and give you our final thoughts on the benchmark results this little-PC-that-could throws down.

Parts List:

Antec Three Hundred ($60, www.antec.com)

Intel Core 2 Duo E8400 3GHz Wolfdale ($165, www.intel.com)

Visiontek Radeon HD 4850 ($185, www.visiontek.com)

Seagate 500GB Barracuda ($65, www.seagate.com)

MSI P45 Neo3 ($110, www.msi.com.tw)

Samsung SH-S223F DVD Burner ($25, www.samsung.com)

Antec NeoPower 500 ($90, www.antec.com)

Corsair 2x1GB DDR2 800 ($40, www.corsair.com)

Let's get to building!

1. Mount the Power Supply

Traditionally, the PSU is mounted at the top of the case. But in this instance, the Antec Three Hundred case reserved room for the power supply at the bottom. Start by removing the four screws that are meant to hold the PSU in place. Then, slide the unit down into place, making sure you keep the wires inside the case and avoid pinching any underneath the power supply. This Power Supply should be oriented so that the rear fan is to the left of the power switch. With the screwdriver, insert the four screws into the appropriate slots to finish mounting the power supply.

2. Drop in the CPU

You may have thought with the end of CPU pins that installing your processor was safe and worry-free. It can be, but if you’re not careful, installing your new CPU can still bork your mobo. It’s still one of the most delicate steps in building a PC, which is why we usually recommend installing the CPU before you mount the motherboard in the case. First, remove the black protective shield covering the socket and store it in a place you won’t forget. It’s good practice to save this plastic covering since most motherboard manufacturers require it to be in place if you ever need to RMA a defective board.

The next step is to unlatch the metal arm next to the socket and lift the retention plate. Then, look at the CPU and the socket and match up the notches on the CPU with the notches on the socket. Drop the CPU in carefully while keeping it parallel to the socket (ie. not tilted at any angle). Make sure the marked corner of the CPU’s heat spreader matches up with the marked corner of the socket. Do not slide the CPU around when it is in the socket or it may damage the processor or motherboard. Once the CPU is aligned in place, drop the retention clamp and then slowly and carefully push the metal locking arm down, making sure it clicks into position. You will feel some resistance while pushing the arm down, but this is normal.

With the CPU in place, it’s time to attach the heatsink.

3. Lock in the Heatsink

The retail version of our CPU comes with a stock Intel cooler. In our experience, stock coolers deliver more than sufficient cooling for most users, especially if you’re not planning on overclocking your processor. The stock Intel cooler keeps things simple with pre-applied thermal paste and an easy-to-install, though not necessarily secure, locking mechanism.

First, make sure that you remove any protective film from the cooler’s thermal grease. Leaving that on will definitely cause your processor to overheat. Then ,line up the legs of the heatsink with the holes on the motherboard and let the heatsink rest on top of the CPU. Make sure each leg’s locking mechanism is in the install position with the arrows facing outward, away from the center of the cooler. Press firmly on the first leg until you hear a click and feel the locking mechanism snap into place. Then, do the same thing on the leg opposite the first one you locked.

Once all four legs are locked, you can flip the motherboard over and you should see all four legs sticking out slightly from the bottom. If a leg is not fully secured or the heatsink still feels loose, turn the locking mechanism counterclockwise with a flathead screwdriver so the arrows face in, pull the leg straight up and repeat the steps mentioned above.

After the cooler is safely fastened to the motherboard, plug the fan’s four-pin power cable into the corresponding four-pin header on the motherboard—typically it’s near the socket. Make sure your wires won’t get caught in the CPU fan though!

4. Mount the Motherboard

Before you can install the motherboard, you’ll need to install the I/O shield, which is the little metal plate that labels your inputs and outputs on the back of the case. But first, you need to pop out the default shield that comes attached to the case. If you have difficulty prying it off, try using a tool like your screwdriver and push it from the outside inward. Now, take the new I/O shield and pop out the necessary tabs to fit in the ports protruding from your motherboard.

Next, find the bag of brass standoffs that came with the case. There should be at least eight of them, though the typical number is nine (one for each screw hole in your mobo). For ATX motherboard designs, such as the one we’re using, Antec has marked the interior of the case with where these standoffs should be affixed. Install them into the holes marked “A” for most motherboards. Use pliers to tighten them so they don’t come undone. Once you’ve placed the standoffs, make sure you line up your motherboard and confirm that you can see all the standoffs through the holes in the mobo. Incorrectly placing a motherboard standoff can short out your motherboard and cause hardware damage.

We suggest laying the case down on its side to install the motherboard. Carefully lower the board into the case, making sure you line up the ports on the ATX connector with the holes in the I/O shield. Once you’re sure everything’s lined up properly, start screwing the motherboard down. Be careful not to use too much force, which may crack or otherwise damage the board. You can keep the case lying on its back for the remainder of the building process.

5. Long Term Memory

Memory installation is fairly easy, but if you mess up and drop your RAM in the wrong slots, you could cripple the performance of your rig. If you don’t properly populate the RAM slots, you can halve your available memory bandwidth, which will really hurt performance

Many motherboard manufacturers color-code their slots, which makes installation as easy as sticking the matching DIMMs in their respective colored slots. Not all manufacturers use the same color scheme however, so consult your manual to be 100% sure.

The MSI board we’re using uses an unusual color scheme, in which we need to put the matching RAM sticks in the alternating colored slots. With the motherboard placed on a stable and static-free surface (you can rest it on the anti-static bag it came in on a tabletop), locate the indented notch on the bottom of each RAM stick and match it to the notch on the motherboard slot. With the slot levers pulled back, gently press the memory into the slot by pushing each end of the stick with your fingers until the stick locks into position.

Inserting the memory will take more force than anything else when you build your PC, so don’t hesitate to push. If your RAM starts rocking back and forth in the slot, that could mean you have the stick in backwards. If you do everything right, the retention levers should automatically move into position with an audible click. Make sure you leave the levers on both the used and unused slots in the closed position, as an extended lever can damage the video card during installation.

6. Installing the Videocard

With only one x16 PCI-E slot on our mobo, there’s only one place for our Radeon HD 4850 card to reside in. Before you plug in the videocard, you need to clear a slot for it. Remove the slot cover from case, then slide the card in along the expansion slot. It’s important to keep the card perpendicular to the plane of the motherboard, so that it properly seats in the slot. Make sure the card makes complete contact with the slot and is fitted all the way in. Once the card is securely in place, screw the mounting bracket to the chassis.

7. Install the Optical and Hard Drives

Before installing the optical drive, you’ll need to locate the screws that will hold the drive in place. The loose screws will be located in a small plastic bag inside your DVD burner’s retail box. (If you didn’t buy a retail DVD burner, check your case’s parts box.)

On some computer cases, there are bezels covering each slot where you’ll mount your drives. In this instance, you only need to remove a single bay bezel from the front side of the case. Simply slide the optical drive into the 5.25-inch bay, making sure that you line up the appropriate holes with the slots and that the front bezel of the drive is aligned with the front of your case. Then, mount the drive on the case using the proper screws. You only need two screws on each side of the drive to keep it safely mounted.

With the hard drive, you won't have to remove any bezel or front paneling. Just hold the drive in place while you screw it in.

8.Get Wired

Oh cables, how much we loathe thee. Luckily, with SATA drives we don’t have to worry about ugly, gray, IDE cables anymore. You’ll need to run a SATA cable from your motherboard (the ports are on the lower right portion of the board) to your optical and another to your hard drive. It’s a good idea to make sure that the hard drive containing Windows is plugged into the first SATA port on your motherboard. In this build, we kept it simple by only requiring two SATA ports for our two drives. This MSI board can connect up to six SATA devices, which leaves you plenty of room for upgrades in the future.

Next up are the dreaded front panel connections. You know, those multi-colored wires that need to be pushed onto a bunch of poorly labeled pins? Find these color-coded cables near the front of your case, and isolate the HDD LED, the power LED, the reset switch, and the power switch. You can plug the power and reset switches directly to the labeled leads on the mobo, but the two lights are trickier. Plug the HDD LED into the orange section, making sure the colored wire lines up with the + pin on the mobo. Do the same for the power LED as well. Don’t worry about making mistakes; a faulty connection will not harm your case or motherboard.

If you want to use the case’s front-mounted USB ports, connect the labeled USB cable to the JUSB1 pins; it should slide in easily and it’s keyed, so there’s only one possible way to connect it. The last connection you will need to make is for the front panel audio. The case comes with both an AC ’97 and HD Audio connection. You will want to use the HD Audio connector and plug it to the JAUD1 pins on the bottom left corner of the motherboard.

Now that you’re done with these troublesome wires, you may want to stand back and observe the mess of cables you have running around the interior. Bundle up your loose cables with zip ties and tuck them away in the case’s many crevices. With some extra effort and patience, you can pretty up the mess of wires and have your $800 PC looking like a Dream Machine.

9. Add Power to the Parts

Now it’s time to add some power to the components. This will be fairly easy; the trickiest part is making sure you don’t forget any components.

Before you plug in the main power connector into the motherboard, make sure that the PSU is not plugged into a wall socket. Grab the 24-pin connector from the power supply and lock it into the motherboard’s power connector, located to the right of the memory slots. It should click into place, or you can gently tug on it to be sure.

Next, locate the four-pin ATX power connector and plug it into its appropriate socket; this supplies supplemental power to the CPU. We should note that the PSU also includes an eight-pin connector, which is the standard for higher-end motherboards, but won’t be used here.

Now, it’s time to plug in the power for the graphics card. Our PSU did not have a six-pin connector specifically for the GPU, so we had to use the four-pin Molex to six-pin adapter that came with the videocard to get juice to the 4850.

Lastly, plug the thin SATA power cables into the hard drive and the optical drive.

That’s it, you’re finished! Now it’s a matter of getting Windows installed and your system up and running.

10. Installing the OS

It’s the moment of truth; everything is connected and you’re ready to hit the power button. But before you do that here’s a quick checklist to make sure you’re ready to go:

•   Make sure all parts are properly seated
•   Make sure all cables are in place
•   Double check front panel connections are correct
•   Plug in the power cord
•   Plug in the monitor, keyboard, and mouse
•   Flip the PSU switch to the on position

When you are sure everything is ready to go, power on the PC! Once the system is up and running, hit the DEL key during startup and you will be taken to the BIOS screen. Many of these options may seem foreign to you, but there are only a few sections that you will need to adjust.

Go to Advanced BIOS Features > Boot Sequence and select the CD/DVD optical drive as your first boot device. Press ESC to go back and while you are here, disable the Full Screen Logo Display and enable Quick Booting to increase your boot time. Once these settings have been made, press F10 and select Yes. The PC will now restart and during the reboot, insert your Windows CD into the optical drive and when prompted, hit any key on the keyboard and Windows setup will begin. Follow the instructions from here on out and you should have Windows successfully installed in a timely fashion.

After Windows is installed, head back to the BIOS and change the boot sequence to boot the hard drive first and the optical drive second. This will prevent the PC from trying to read from the optical drive every time you start the system. Also, head to the Cell Menu in the BIOS and make sure the CPU is running at its stock speed. The FSB frequency should be set at 333MHz and the multiplier should be set to 9 to give you 3GHz, which is the stock speed of this processor. Press F10 again and the system will boot into Windows. In Windows, make sure to install the motherboard, GPU and any other drivers that came with the parts. Some of the hardware may need additional updates online through their respective manufacturers’ websites.

Conclusion

We put this $800 PC up against our standard zero point machine to see how it matches up against a rig that costs twice as much. It’s not hard to guess that the zero point system with a Core 2 Quad and a Velociraptor would beat our budget rig on every test possible, but the $800 wonder did surprisingly well in some of the tests. Premiere Pro tests showed a two minute difference but in Photoshop we only experienced a 4 second difference while Photodex ProShow Producer showed a 41 second difference. MainConcept Reference hit our budget PC hard, though, and further shows that MainConcept is optimized for four cores.

We went into our gaming benchmark with low expectations from our budget card, the Radeon HD 4850. Obviously, it is no match against the dual GeForce 8800 GTX setup in the Zero Point system. With settings cranked up to the max, our card was barely able to spit out 16 FPS in Crysis. While playing Crysis at the highest settings possible and a resolution of 1920x1200 simply isn’t an option, turning down the graphic settings to medium resulted in 43 FPS made the game much more playable. Unreal Tournament 3 managed to give us a stellar 78 FPS. If you’re running at typical 22-inch LCD resolutions, this machine should kick ass.

So what can we say about this all-around budget PC? We can clearly see the difference between a budget system and performance system. However, we can also see that our budget PC is able to run every game and test we throw at it with very respectable benchmark scores. And if you spend a little extra over the $800 budget, performance can easily be increased – upgrades to video card, processor, or memory – but we are very pleased with the setup and performance we have here.

Benchmarks

	Zero Point	$800 PC
Premiere Pro CS3	1,260 sec	1,380 sec
Photoshop CS3	150 sec	154 sec
ProShow	1,415 sec	1,456 sec
MainConcept	1,872 sec	2,716 sec
Crysis	26 fps	16 fps
Unreal Tournament 3	83 fps	78 fps

Best scores bolded. Our current desktop test bed consists of a quad-core 2.66GHz Intel Core 2 Quad Q6700, 2GB of Corsair DDR2/800 RAM on an EVGA 680 SLI motherboard, two EVGA GeForce 8800 GTX cards in SLI mode, a Western Digital 150GB Raptor and 500GB Caviar hard drives, an LG GGC-H20L optical drive, a Sound Blaster X-Fi soundcard, a PC Power and Cooling Silencer 750 Quad PSU, and Windows Vista Home Premium 64 bit.

Corsair's Internal Benchmarks: Why 6GB is Better than 3GB

Paul Lilly — Tue, 18 Nov 2008 10:06:44 -0600

Intel's Core i7 release hasn't just changed the processor game, it's also ushered in a new era of memory choices. Up until Core i7, power users found themselves pondering whether to slap a 2GB or 4GB kit of RAM into their system, but that was before triple-channel memory. Now the choice (for upgraders and new builders) comes down to 3GB or 6GB, and Corsair looks to shed some light on the decision by performing some in-house benchmarking.

The tests, which were performed using an Asus P6T Deluxe motherboard, Core i7-965 Extreme Edition CPU, two Nvidia 280 GTX videocards in SLI, and two Seagate 320GB 7200.10 hard drives in a RAID 0 array, heavily favored the 6GB kit. Corsair's results were sometimes significant, with the minimum frame rate in World of Conflict jumping by 50 percent when upgrading from 3GB to 6GB, and netting over a 3-fold increase in Crysis Warhead. Even game loading times saw a boost.

"The analysis shows that 3GB of system memory is insufficient to run modern games, such as Warhammer Online and Crysis Warhead, resulting in poor performance," Corsair wrote (PDF). "The lack of memory when using 3GB of RAM results in increased hard disk drive access, sometimes called thrashing. This causes in-game stuttering, which reduces the minimum frame rate."

This isn't the first time Corsair has released internal benchmarks. Previously, the memory maker found that upgrading from 2GB to 4GB provided "significant performance benefits." This time around, Corsair says "the message to enthusiasts who are looking to build a Core i7 system for gaming is clear - installing 6GB of memory will provide significantly higher frame rates and a considerably smoother gaming experience."

Thoughts on Corsair's testing methodology or results? Hit the jump and let us know.

Core i7 Dissected and Benchmarked! Does Intel’s Next-Generation Chip Live Up to the Hype? Hell Yeah!

Gordon Mah Ung — Mon, 03 Nov 2008 11:00:00 -0600

Core i7 Up Close

Tick tock? More like ding-dong, mutha—shut your mouth. What baby? We’re talkin’ about Core i7.

Our apologies to Isaac Hayes, but if he were alive, we’re almost certain he would have been tapped to hammer out a theme song for Intel’s most significant CPU launch in, well, ever.

Why is this CPU more significant than the 8088, Pentium, or Pentium M? As the second new chip produced after a series of embarrassing losses to archrival AMD, the Core i7 will answer for the world whether Intel is prepared to ride the momentum of its Core 2 launch with another winning chip or if it’s content to rest on its laurels, as it did with the Pentium 4.

Core i7 also represents a major new direction for Intel, which has stubbornly clung to the ancient front-side-bus architecture and discrete memory controller for years. Indeed, with its triple-channel integrated DDR3 memory controller and chip-to-chip interconnect, the block map of a Core i7 looks more like an Athlon 64 than a Core 2 chip.

Intel actually has three quad-core Core i7 CPUs ready: the top-end 3.2GHz Core i7-965 Extreme Edition, the performance-oriented 2.93GHz Core i7-940, and the midrange 2.66GHz Core i7-920. For the most part, all three are exactly the same except for clock speeds, multiplier locking (only the Extreme is unlocked), and QuickPath Interconnect speed. See the chart on page 42 for details.

The bigger issue is how Core i7 performs. To find out, we ran the Extreme 965 against AMD’s fastest proc as well as Intel’s previous top gun in a gauntlet of benchmarks. Read on for the results.

Intel takes a bold approach to processor architecture, multi-core computing

As a buttoned-down company, Intel rarely likes to make sweeping changes, but its upcoming Core i7 CPU is a major break from the past. Gone is the ancient front-side bus that connects all of the current-gen CPU cores. Instead, cores will communicate via a high-speed crossbar switch, and different CPUs will communicate via a high-speed interconnect.

Also on the outs is the need for an external memory controller. Intel, which has relied on gluing two dual-core chips together under the heat spreader to make its quad-core CPUs, is now placing all four cores on a single die.

Even overclocking, which was once verboten to even talk about within 10 miles of Intel’s HQ, is now automatically supported. Intrigued? You should be. Intel’s Core i7 is the most radical new design the company has taken in decades.

An Inside Job

One of Core i7’s most significant changes is the inclusion of an integrated memory controller. Instead of memory accesses going from the CPU across a relatively slow front-side bus to the motherboard chipset and finally to the RAM, an IMC will eliminate the need for a front-side bus and external memory controller. The result is dramatically lower latency than was found in the Core 2 and Pentium 4 CPUs.

Why can’t the memory controller on the motherboard simply be pushed to higher speeds to match an IMC? Remember, when you’re talking about a memory controller residing directly in the core, the signals have to travel mere millimeters across silicon that’s running at several gigahertz. With an external design, the signals have to travel out of the CPU to a memory controller in the chipset an inch or so away. It’s not just distance, either—the data is traveling across a PCB at far, far slower speeds than it would if it were within the CPU. In essence, it’s like having to go from an interstate to an unpaved, bumpy road.

Of course, if you’re an AMD loyalist, you’re probably bristling at the thought of Intel calling an IMC an innovation. After all, AMD did it first. So doesn’t that make AMD the pioneer? We asked Intel the same question. The company’s response: One: An IMC isn’t an AMD invention and, in fact, Intel had both an IMC and graphics core planned for its never-released Timna CPU years before the Athlon 64. Two: If AMD’s IMC design is so great, why does the Core 2 so thoroughly trash it with an external controller design? In short, Intel’s message to the AMD fanboys is nyah, nyah!

Naturally, you’re probably wondering why Intel thinks it needs an IMC now. Intel says the more efficient, faster execution engine of the Core i7 chip benefits from the internal controller more than previous designs. The new design demands boatloads of bandwidth and low latency to keep it from starving as it waits for data.

Memory a Trois

The Core i7 CPU is designed to be a very wide chip capable of executing instructions with far more parallelism than previous designs. But keeping the chip fed requires tons of bandwidth. To achieve that goal, the top-end Core i7 CPUs will feature an integrated tri-channel DDR3 controller. Just as you had to populate both independent channels in a dual-channel motherboard, you’ll have to run three sticks of memory to give the chip the most bandwidth possible. This does present some problems for board vendors though, as standard consumer mobos have limited real estate.

Most performance boards will feature six memory slots jammed onto the PCB, but some will feature only four. On these four-slot boards, you’ll plug in three sticks of RAM and use the fourth only if you absolutely have to, as populating the last slot will actually reduce the bandwidth of the system. Intel, in fact, recommends the fourth slot only for people who need more RAM than bandwidth. With three 2GB DIMMs, though, most enthusiast systems will feature 6GB of RAM as standard.

Although it may change, Core i7 will support DDR3/1066, with higher unofficial speeds supported through overclocking. Folks hoping to reuse DDR2 RAM with Intel’s budget chips next year can forget about it. Intel has no plans to support DDR2 with a Core i7 chip at this point, and with DDR3 prices getting far friendlier to the wallet, we don’t expect the company to change its mind.

Hyper-Threading Revisited

A CPU core can execute only one instruction thread at a time. Since that thread will touch on only some portions of the CPU, resources that are not used sit idle. To address that, Intel introduced consumers to Hyper-Threading with its 3.06GHz Pentium 4 chip. Hyper-Threading, more commonly called simultaneous multi-threading, partitioned the CPU’s resources so that multiple threads could be executed simultaneously. In essence, a single-core Pentium 4 appeared as two CPUs to the OS. Because it was actually just one core dividing its resources, you didn’t get the same performance boost you would receive from adding a second core, but Hyper-Threading did generally smooth out multitasking, and in applications that were optimized for multi-threading, you would see a modest performance advantage.

The 45nm-based Core i7 will pack all four cores on a single die. The cores will communicate via a high-speed crossbar switch. An integrated memory controller and Quick Path Interconnect links to other CPUs also make the Core i7 very AMD-like.

The problem was that very few applications were coded for Hyper-Threading when it was released and performance could actually be hindered. Hyper-Threading went away with the Core 2 series of CPUs, but Intel has dusted off the concept for the new Core i7 series because the transistor cost is minimal and the performance benefits stand to be far better than what the Pentium 4 could ever achieve.

Intel toyed with the idea of redubbing the feature Hyper-Threading 2 but decided against it, as the essential technology is unchanged. So why should we expect Hyper-Threading to be more successful this go around? Intel says it’s due to Core i7’s huge advantage over the Pentium 4 in bandwidth, parallelism, cache sizes, and performance. Depending on the application, the company says you can expect from 10 to 30 percent more performance with Hyper-Threading enabled. Still, Intel doesn’t force it down your throat because it knows many people still have mixed feelings about the feature. The company recommends that you give it a spin with your apps. If you don’t like it, you can just switch it off in the BIOS. Intel’s pretty confident, however, that you’ll leave it on.

Tomorrow’s Performance Today

You can’t recompile the world. That’s the lesson Intel learned with the Pentium 4, which kicked ass with optimized code but ran like a Yugo with legacy apps. And even with Intel’s nearly limitless resources, it couldn’t get every developer to update software for the P4.

Intel took those lessons to heart with the stellar Core 2 and continues in that vein with Core i7, which is designed to run even existing code faster. That’s largely due to the Hyper-Threading, massive bandwidth, and low latency in the new chip, but other touches also help.

Loop conditions are common programming techniques that repeat the same task in a CPU. With Core i7, an improved loop detector routine will save power and boost performance by detecting larger loops and caching what the program asks for. Intel also polished its branch prediction algorithms. Branch predictions are those yes/no questions a CPU faces. If the CPU guesses wrong on what the program wants, the assembly-line-like pipeline inside the CPU must be cleared and the process started anew. New SSE4.2 instructions also make their way into Core i7, but they will be of little benefit to desktop users. Since Intel is designing the chip for server use as well, the new instructions are mainly to help speed up supercomputing and server-oriented workloads.

The main takeaway is that while some of the changes are radical, Intel is being pragmatic with its chip design—you won’t have to go out and buy new software to experience the CPU’s performance potential.

Making Better Connections

With a Hyper-Threaded quad core, even enthusiasts are unlikely to see the need for a multi-processor machine; nevertheless, one of the new features in Core i7 directly addresses a weakness in Intel’s current lineup when it comes to multi-CPU machines. As you know, Intel currently uses a front-side-bus technology to tie its multiprocessor machines together. As you might imagine, problems arise when a single front-side bus is sharing two quad-core CPUs.

With so many cores churning so much data, the front-side bus can become gridlocked. Intel “fixed” this issue by building chipsets with two front-side buses. But what happens when you have a machine with four or eight CPUs? Since Intel couldn’t keep adding front-side buses, it took another page from AMD’s playbook by building in direct point-to-point connections over what it calls a Quick Path Interconnect. Server versions of Core i7 feature two QPI connections (desktop versions get just one), which can each talk at about 25GB/s, or double what a 1,600MHz front-side bus can achieve. AMD fans, of course, will point out that the fastest iteration of AMD’s chip-to-chip conduit, dubbed HyperTransport 3.1, is twice as fast as the current QPI.

QPI combined with the on-die memory controller will also make an Intel server or workstation a NUMA, or non-uniform memory access, design. Since each CPU has a direct link to its own individual memory DIMM, what happens if CPU 1 needs to access something that’s stored in the RAM being controlled by CPU 2? In this case, it must use the QPI link to access the second CPU’s memory controller to the RAM to get the data. This will slow things down a bit, but Intel says its tests indicate that even given this scenario, the memory access is still faster than what is possible with the current front-side-bus multiprocessor design.

The Power Within

It’s a known fact that overclocking can decrease the life of your CPU; thus, Intel has always discouraged end-users from overclocking its CPUs. With Core i7, Intel reverses its stance and actually overclocks the CPU for you! Of course, Intel would not describe its Turbo mode as overclocking, and, technically, it isn’t. While pushing your 2.66GHz Core 2 Quad to 3.2GHz would likely strain its thermal and voltage specs, the new Core i7 CPUs feature an internal power control unit that closely monitors the power and thermals of the individual cores.

This wouldn’t help by itself, though. Intel designed the Core i7 to be very aggressive in power management. With the previous Core 2, power to the CPU could be lowered only so far before the chip would crash. That’s because while you can cut power to large sections of the execution core, the cache can tolerate only so much decrease in power before blowing up. With Core i7, Intel separates the power circuit, so the cache can be run independently. This lets Intel cut power consumption and thermal output even further than before. Furthermore, while the Core 2 CPUs required that all the cores were idle to reduce voltage, with Core i7, individual cores can be turned off if they’re not in use.

Turbo mode exploits the power savings by letting an individual core run at increased frequencies if needed. This again follows Intel’s mantra of improving performance on today’s applications. Since a majority of today’s applications are not threaded to take full advantage of a quad core with Hyper-Threading, Turbo mode’s “overclocking” will make these applications run faster. For more information on how you’ll set up Turbo mode, read our sidebar below.

Intel’s Turbo Mode Technology

Turbo mode might sound like a feature left over from the TV series Knight Rider, but it’s more neat than cheesy. You already know that Core i7 CPUs closely monitor the power and thermals of the chip and use any leftover headroom to overclock the individual cores as needed. But just how does it work?

From what we’ve surmised by examining an early BIOS, you will be able to set each type of core scenario based on how far you want to overclock, given the load. For example, with applications that push one thread, you could set the BIOS to overclock, or rather, turbo that single core by perhaps three multipliers over stock. You would do the same for two-, three-, and four-core scenarios.

The good news is that you’ll get fine-grain control over the Turbo mode in the upcoming Core i7 CPUs.

The BIOS will also take into account the thermal rating, or TDP, of the cooling system you’re using. If you’re using, say, a heatsink rated for 150 TDP, the BIOS will overclock to higher levels than it would with a 130 TDP unit. You would manually set the heatsink’s rating in the BIOS, as there’s no way for the heatsink to communicate with the motherboard directly.

New Socket on the Block

So all this CPU goodness and performance will drop right into that $450 LGA775 board you just bought, right? Of course not. Ung’s Law dictates that the minute you buy expensive hardware, something better will arrive that makes what you just bought obsolete.

Intel isn’t doing this just to piss people off (although a history of such behavior has had that result). Since Core i7 moves the memory controller directly into the CPU, Intel added a load of pins that go directly to the memory modules. The new standard bearer for performance boxes is the LGA1366 socket. It looks functionally similar to the LGA775, with the obvious addition of more pins. More pins also means a bigger socket, which means your fancy heatsink is also likely headed to the recycle bin. LGA1366 boards space the heatsink mounts just a tad bit wider, just enough to make your current heatsink incompatible. There’s a chance that some third-party heatsink makers will offer updated mounts to make your current heatsink work, but that’s not known yet.

What will be interesting to heatsink aficionados is Intel’s encouragement that vendors rate the heatsinks using a unified thermal rating that will be tied to the Turbo mode settings. For more information, see the Turbo mode sidebar below.

The Second Coming

Intel is adopting more than just AMD’s integrated memory controller with its new Core i7 chips; it’s also adopting AMD’s abandoned Socket 940/754 two-socket philosophy. For the high end, the LGA1366 socket will offer tri-channel RAM and a high-performance QPI interface. For mainstream users, Intel will offer a dual-channel DDR3 design built around a new LGA1066 socket late next year. LGA1066 isn’t just about shedding one channel of DDR3 though; LGA1066-based CPUs will also bring direct-attach PCI Express to the table.

Instead of PCI Express running through the chipset, as it does with existing Core 2 and the new performance Core i7, PCI-E will reside on the die of LGA1066 CPUs. With the PCI-E in the CPU itself, Intel will reuse its fairly slow DMI interface to connect the CPU to a single-chip south bridge. The two chips Intel will introduce are the quad-core Lynnfield and the dual-core Havendale. Havendale CPUs will actually feature a newly designed graphics core inside the heat spreader that will talk to the CPU core via a high-speed QPI interface. Both chips will feature Hyper-Threading on all cores.

Many AMD users got a royal screwing when the company abandoned both Socket 940 and Socket 754 for a unified Socket 939; could Intel do something similar? We asked Intel point blank whether LGA1366 would eventually be abandoned for LGA1066; the company told us it fully intends to support both platforms.

The Core i7 Family

	Core i7-965 Extreme Edition	Core i7-940	Core i7-920
Clock Speed	3.2GHz	2.93GHz	2.66GHz
L2 Cache	1MB	1MB	1MB
L3 Cache	8MB	8MB	8MB
Process	45nm	45nm	45nm
Transistors	731 million	731 million	731 million
QPI Speed	6.4GT/s	4.8GT/s	4.8GT/s
Multiplier Lock	No	Yes	Yes
Default Multiplier	24	22	20
Volume Pricing	$999	$562	$284

Core i7 Versus the World

To test the Core i7’s mettle, we threw it in the ring with the two quad-core class leaders available today: AMD’s 2.6GHz Phenom X4 9950 Black Edition and Intel’s 3.2GHz Core 2 Extreme QX9770. We paired each with its respective top-end chipset: a 790FX board for the Phenom X4 and an X48 for the Core 2, while the Core i7 partnered with an Intel DX58SO board using the new X58 chipset. All three systems were outfitted with an Nvidia GeForce 8800 GTX card, the same graphics driver, a Western Digital 150GB Raptor 10K hard drive, and the 64-bit edition of Windows Vista Home Premium.

For RAM, we couldn’t use the same components in all three systems; the Phenom uses DDR2 while both Intel CPUs use DDR3; the Core i7’s triple-channel DDR3 requires three DIMMs for maximum bandwidth while the Core 2 needs just two. Our solution favored the Phenom and Core 2: We populated the Phenom X4 with 4GB of Patriot DDR2/800 and the Core 2 with 4GB of Corsair DDR3/1333, each receiving a pair of 2GB modules. The Core i7 made do with three 1GB DDR3/1066 DIMMs from Qimonda. The Core i7 officially supports DDR3 at 1066 at this point, so we stuck with stock speeds, although motherboard vendors tell us they’re able to hit far higher DDR3 speeds.

We selected a combination of tests that stress memory performance, computational abilities, and real-world performance. The vast majority of the application tests are multithreaded. The gaming tests, beyond 3DMark Vantage, reflect performance optimized for dual-core CPUs, at best. For our real-world gaming tests, we turned down graphics and resolutions to the minimum to remove the GPU as a bottleneck.

The Upshot

If we had to describe the Core i7 in one word, it would be monster. The CPU is to benchmarks as Godzilla is to downtown Tokyo.

Take, for example, the Core i7 Extreme 965 versus the Phenom X4 9950 Black Edition. It’s no surprise that the Core i7 throws the Phenom X4 through a couple of concrete walls and right into a telephone pole. We witnessed performance differences of 87 percent, 95 percent, and even 133 percent over the fastest Phenom X4 part. AMD’s best and brightest part was utterly crushed by Intel’s new baby. Naturally, some folks will argue that it’s unfair to put a $1,000 chip against one that sells for $174, but we don’t feel that way. The Phenom X4 9950BE is AMD’s fastest CPU. If AMD doesn’t feel comfortable selling it at higher clocks, that’s AMD’s problem. Sure, we could overclock the Phenom part to 3GHz, but we could also overclock the Core i7. In the interest of a more competitive landscape, let’s just hope AMD’s 45nm CPU—due out soon—puts some pep back in the company’s step because the situation is getting beyond ugly.

A more closely matched fight was expected between the Core i7-965 Extreme Edition and Intel’s own Core 2 Extreme QX9770, both of which churn along at 3.2GHz. Nevertheless, the Core i7 managed to maul its sibling in several benchmarks. In our MainConcept H.264 encoding test, the Core i7 was 55 percent faster. In ProShow Producer, the Core i7 completed its runs about 25 percent faster. Using WinRAR to compress a folder of digital RAW files, the Core i7 was 43 percent faster. In other tests, especially gaming, the QX9770 closed the spread down to single digits, but for the most part, the Core i7 was from 14 to 20 percent faster than its Penryn counterpart.

Not everything came up roses for the Core i7, however. We saw the Core i7 cough up a hair ball in FEAR with an odd 51fps compared with the QX9770’s 122fps and a shocking 239fps from the Phenom. Intel says this is the result of a USB bug, as a duplicate system in its lab performed as expected. A more believable result was in World in Conflict: The Core i7 reached 250fps versus the QX9770’s 220 and the Phenom’s 136.

Even an Arthur Andersen accountant would have to declare the Core i7 the new champion after peeping our benchmark table. From encoding performance to 3D rendering to gaming, the Core i7’s more efficient core, boatloads of memory bandwidth, and low RAM latency make it a shockingly fast CPU.

Benchmarks

	Core i7-965 Extreme	Phenom X4 9950 BE	Core 2 Extreme QX9770
MainConcept (min:sec) 3	15:58	31.37	24.49
MainConcept Pro (min:sec)	10:08	18:44	14:49
ProShow Producer 3.1 (min:sec)	10:19	20:10	12:52
Premiere Pro CS3 (min:sec)	10:17	16:27	11:26
Photoshop CS3 (min:sec)	1:50	2:48	1:55
Cinebench 10 32-bit	15,398	8,179	12,175
Cinebench 10 64-bit	18,963	10,431	13,849
Valve Map Compilation (min:sec)	2:05	2:47	1:56
ScienceMark Overall	2,091.22	1,608.74	1,920.2
ScienceMark Membench (MB/s)	13,312	7,279	8,559.5
PCMark Vantage x64 Overall	7,510	5,724	6,423
PCMark Vantage Overall	6,705	5,299	5,961
Sisoft Sandra RAM Bandwidth (GB/s)	18.15GB/s	9.73GB/s	7.4GB/s
Sisoft Sandra RAM Latency (ns)	77	95	79
Everest Ultimate MEM Read (MB/s)	15,167	6,701	8,252
Everest Ultimate MEM Write (MB/s)	12,041	4,856	8,490
Everest Ultimate MEM Copy (MB/s)	15,583	7,760	8,426
Everest Ultimate MEM Latency (ns)	39.2	64.7	66.7
WinRAR 3.80 (min:sec)	9:44	18:11	13:57
POV-Ray 3.7 (min:sec)	6:48	11:52	8:08
3DMark06 overall	12,859	11,639	12,906
3DMark06 CPU	5,638	3,532	4,717
3DMark Vantage	7,516	7,301	7,588
3DMark Vantage CPU	39,725	26,709	32,446
3DMark Vantage GPU	5,917	5877	6,044
FEAR (FPS)	51	239	122
Quake 4 (FPS)	228.0	152.3	206.6
Valve Particle Test (FPS)	161	69	111
Crysis 1.2 10x7 very low CPU1(FPS)	164	112	153
World In Conflict (FPS)	250	136	220

NOTES: How we tested. We used matched GeForce 8800GTX cards for all three platforms, matched Western Digital 150GB Raptors, Windows Vista Home Premium 64-bit and the same graphics drivers. The Core 2 Quad had 4GB of DDR3/1333, the Phenom X4 BE 9950 had 4GB of DDR2/800 and the Core i7 had 3GB of DDR3/1066.

Top End Showdown

As you know, all Core i7 are pretty much the same chip. There’s no cache size difference, no disabled Hyper-Threading. The only differences between the chips are clock speeds and the QPI interface speed and the “Overspeed protection.” Overspeed protection is simply the multiplier lock. Non extreme Core i7’s will not let you change your multiplier ratio wily nily that the Extreme will. The second is the QPI speed. The 965 Extreme runs at a 6.4GT/s while the 920 and 940 communicate with the chipset at 4.8GT/s.

The performance upshot is that the Extreme is the fastest. No surprise there Sherlock. What does surprise us though is the difference in speed in some benchmarks. In our Main Concept test, for example, we saw the 965 encode our high def video about 24 percent faster than the 940. What’s odd is that the 965 offers just 9 percent more clocks than the 940. We saw a similar results in the Cinebench 10 test where the 965 was about 14 percent faster than the 940.

In other tests we saw standard clock speed splits. In PC Mark Vantage, for example, the 965’s 9 percent clock spread gave it about an 11 performance spread. POV-Ray saw the 965 with its 20 percent clock advantage over the 920 turn a score about 22 percent faster. Other tests saw fairly minimal advances for the 965. For example, our ProShow Producer was virtually a tie between the 2.93GHz part and the 3.2GHz chip which leads us to believe we have a bottleneck in our configuration or coding issues going on.

Benchmarks

	2.66GHz Core i7-920 $284	2.93GHz Core i7-940 $562	3.2GHz Core i7-965 Extreme $999
MainConcept (min:sec) 3	21.40	19:50	15:58
MainConcept Pro (min:sec)	12:21	11:19	10:08
ProShow Producer 3.1 (min:sec)	11:10	10:16	10:19
Premiere Pro CS3 (min:sec)	12:39	11:41	10:17
Photoshop CS3 (min:sec)	2:05	2:03	1:50
Cinebench 10 32-bit	12,632	13,793	15,398
Cinebench 10 64-bit	15,217	16,651	18,963
Valve Map Compilation (min:sec)	2:32	2:21	1:50
ScienceMark Overall	1,710.1	1884.69	2,091.22
ScienceMark Membench (MB/s)	12,737	13,028	13,312
PCMark Vantage x64 Overall	6,616	6,767	7,510
PCMark Vantage Overall	5,347	6,043	6705
Sisoft Sandra RAM Bandwidth (GB/s)	18.07GB/s	18.09GB/s	18.15GB/s
Sisoft Sandra RAM Latency (ns)	79ns	78ns	77ns
Everest Ultimate MEM Read (MB/s)	14,449	14,841	15,167
Everest Ultimate MEM Write (MB/s)	11,627	14,788	12,041
Everest Ultimate MEM Copy (MB/s)	15,039	15,011	15,583
Everest Ultimate MEM Latency (ns)	38.7	37.0	39.2
WinRAR 3.80 (min:sec)	10:52	10:45	9:44
POV-Ray 3.7 (min:sec)	8:18	7:42	6:48
3DMark06 overall	12,407	12,559	12,859
3DMark06 CPU	4,620	5,035	5,638
3DMark Vantage	7,450	7,453	7,516
3DMark Vantage CPU	34,909	35,548	39,725
3DMark Vantage GPU	5,902	5868	5,917
FEAR (FPS)	132	235	51*
Quake 4 (FPS)	144.6	156.2	228.0
Valve Particle Test (FPS)	131	143	161
World In Conflict (FPS)	223	232	250
QPI	4.8 GT/s	4.8GT/s	6.4GT/s

NOTES: How we tested. We used a single GeForce 8800GTX, a 150GB Western Digital Raptor, Windows Vista Home Premium 64-bit edition and 3GB of DDR3/1066 for all of our tests. *We had issues running FEAR on the Core i7 Extreme part.

Budget Processor Showdown: Core 2 Quad vs. Core i7

It is no longer politically correct to call your thrift-minded friends by any of the many offensive low-cost names people have used over the years, but you can forward your cheap-skate geek friends this link and tell them that even they can participate in the latest technology trends without feeling like they’re getting a great deal. That’s because Intel’s new 2.66GHz Core i7-920 is a great deal.

To find out how well the 920 would do, we put the $284 chip against the $316 2.83GHz Core 2 Quad Q9550. The upshot is in almost every benchmark, the 920 was faster. In some tests, the slightly clock speed advantage of the Q9550 put it ahead, but not by much. Oddly, we did see the 920 lose in Quake 4. Quake 4 is only optimized for quad core but we didn’t expect to win here. Clearly there’s something going on the gaming side that we’ll have to continue to investigate. We must also point out that our decision to limit the Core i7 to its stock DDR3/1066 speeds may also be hobbling the chip.

Our recommendation is that you go with the path of the Core i7 chip if you’re concerned about future upgrades. With Core i7 here, Intel is likely to rapidly push the Core 2 platform aside so you’ll never see a CPU faster than the 3.2GHz Core 2 Extreme QX9770. The Core i7,l however, will continue to climb in clock speeds for the next few years. Where the Core 2 platform plays better is in the ultra budget shoppers. With Core 2 boards priced from $50 on up and CPUs in the sub $100 arena, you can actually start at far lower prices than Core i7. But if you are concerned about upgrades, the Core i7 is the way to go.

Benchmarks

	2.8GHz Core 2 Quad Q9550 ($316)	2.66GHz Core i7-920 ($284)
MainConcept (min:sec) 3	27:40	21:40
MainConcept Pro (min:sec)	16.28	12.21
ProShow Producer 3.1 (min:sec)	15:18	11:10
Premiere Pro CS3 (min:sec)	12:51	12:39
Photoshop CS3 (min:sec)	2:04	2:05
Cinebench 10 32-bit	10,837	12,632
Cinebench 10 64-bit	12,288	15,217
Valve Map Compilation (min:sec)	2:10	2:32
ScienceMark Overall	1,715.67	1,710.1
ScienceMark Membench (MB/s)	7,105	12,737
PCMark Vantage x64 Overall	5:945	6,616
PCMark Vantage Overall	5,460	5,347
Sisoft Sandra RAM Bandwidth (GB/s)	6.9GB/s	18.07GB/s
Sisoft Sandra RAM Latency (ns)	81ns	79ns
Everest Ultimate MEM Read (MB/s)	8,006	14,449
Everest Ultimate MEM Write (MB/s)	7,075	11,627
Everest Ultimate MEM Copy (MB/s)	7,334	15,039
Everest Ultimate MEM Latency (ns)	66.4	38.7
WinRAR 3.80 (min:sec)	14:48	10:52
POV-Ray 3.7 (min:sec)	9:08	8:18
3DMark06 overall	12,583	12,407
3DMark06 CPU	4,276	4,620
3DMark Vantage	7,459	7,450
3DMark Vantage CPU	30,615	34,909
3DMark Vantage GPU	6,034	5,902
FEAR (FPS)	114	132
Quake 4 (FPS)	180.3	144.6
Valve Particle Test (FPS)	100	131
World In Conflict (FPS)	188	151

NOTES: How we tested. We used matched GeForce 8800GTX cards for both platforms, matched Western Digital 150GB Raptors, Windows Vista Home Premium 64-bit and the same graphics drivers. The Core 2 Quad had 4GB of DDR3/1333 and the Core i7 had 3GB of DDR3/1066.

Core i7 Features Dissected

The Core i7 CPU sports some unique features—we test their merits

Hyperthreading: The Next Generation

Hyper-Threading got a bad rap under Pentium 4 for being more a hindrance than a help to performance. Our tests then showed that HT generally helped, but the lack of threaded applications made the feature pretty near worthless. Intel has reintroduced Hyper-Threading with the Core i7 and says it’s worth another look. We ran a handful of our multithreaded applications with HT both on and off and determined that this time around, it’s good stuff. We generally saw a healthy double-digit boost in performance with HT enabled. Using the latest version of ProShow Producer, we actually took a 26 percent hit by turning off Hyper-Threading. MainConcept’s encoder experienced a drop of 17 percent without Hyper-Threading. So, if you ask us, you oughta leave it on.

Benchmarks

HyperThreading	HT On	HT Off
Main Concept	15:58	19:13
ProShow Producer 3.5	10:42	14:28
Cinebench 10 32-bit	15398	13451
Cinebench 64-bit	18963	16613
PO V-Ray	6:48	6:56
3DMark Vantage CPU	39725	35623

NOTES: Best Scores in Bold

Tinkering with Turbo Mode

Intel’s Turbo Mode gives the user fine-grain control over individual cores. By shutting down individual cores that aren’t used during, say, a single-threaded game, you can pick up what is essentially free performance by overclocking, or rather, Turboing, from 3.2GHz to 3.8GHz. We dialed up the allowable, um, Turbos from the stock 24 to 27 to see if the feature works. Indeed it does. In our mostly single-threaded Photoshop CS3 test and World in Conflict, we saw the scaling you’d expect from a 10 percent overclock. Since we didn’t choose to overclock for two threads, we didn’t see much of a change in Quake 4. Our verdict is that it’s a worthwhile proposition, the caveat being that you will need liquid cooling or a big, fat heatsink to truly exploit its potential.

Benchmarks

Turbo Mode	Off	On
Photoshop CS3	1:50	1:42
Quake 4	228 FPS	228 FPS
World in Conflict	250 FPS	272 FPS

NOTES: Best Scores in Bold

Tri-Channel Memory Tested

Core i7’s tri-channel DDR3 memory controller presents a radical alternative to the standard dual-channel configurations. Since the controller lets you run single, dual, or tri mode, we decided to take a look at the actual bandwidth offered by each scenario and the resulting real-world impact. Using three Qimonda 1GB DDR3/1066 DIMMs and a single Corsair 2GB DDR3/1600 DIMM (set at DDR3/1066), we ran two RAM benchmarks and Quake 4. The upshot is that for the best performance, you should populate three channels.

Benchmarks

Tri-Channel	3 DIMM 3GB DDR3	2 DIMM 2GB DDR3	1 DIMM 2GB DDR3	1 DIMM 1GB DDR3
SiSoft Sandra RAM Bandwidth	18.15	12.7	7.1	6.75
Everest Ultimate MEM Read	15167	14388	8317	8236
Everest Ultimate MEM Write	12041	13590	8285	8187
Everest Ultimate MEM Copy	15583	14848	9062	7798
Quake 4	228.0	172.4	213	167

Crossing Velociraptors

David Murphy — Thu, 05 Jun 2008 16:31:36 -0500

You've seen the benchmarks. Everyone's been cooing about Western Digital's Velociraptor drive--us included--since the moment the early versions of the drives started hitting reviewers' doors. Some sites reviewed early versions of the drive as-is, others noted that these models were engineering samples. In practice, I think the latter is the best route, and that's just what Maximum PC did. Especially since Western Digital promised speed improvements in upwards of ten percent once they finished tweaking the drive's firmware for its final iteration.

Now that the fateful day has come, I've been curious to see just how much extra juice they could pull out of this speedy little monster. Here's a look at the before-and-after:

BENCHMARKS
	WD Velociraptor (old)	WD Velociraptor (new)	Percent change
HDTach Burst (MB/s)	255.1	249.7	-2.11%
HDTach Random Access (ms)	7.1	7.1	0.00%
HDTach Average Read (MB/s)	104.6	108.4	3.63%
HDTach Average Write (MB/s)	96.7	100	3.41%
PCMark05 Overall	9457	9450	-0.07%
All HDTach scores use HDTach 3.0.1.0. Best scores are bolded.

What do these numbers tell us? Western Digital's tweaked the performance of the drive, obviously. But the faster read and write speeds are nothing to write home about. Remember, HDTach is more a diagnostics tool than anything else. It's great for determining potential problems for your drives, but its access patterns don't replicate the real-world experience you would encounter. For that, we turn to PCMark05. And as you can see, the performance difference is negligible--probably even within an acceptable random variance were we to run the benchmark ten separate times.

I'm still going to review finished hardware. It's the Maximum PC way. And the Velociraptor is still the fastest consumer-grade hard drive one can buy. But its performance -- while mildly different in a synthetic benchmark -- isn't as "tweaked" as we expected given Western Digital's claims.

Check out the full review of Western Digital's Velociraptor drive!

Daily New Brief: Crossing the Border? Leave the Laptop!

Paul Lilly — Wed, 30 Apr 2008 16:54:14 -0500

Crossing the Border? Leave the Laptop...

In a unanimous three-judge decision, a federal appeals court on Monday gave federal border agents free reign to snoop into your laptop, cell phone, and digital camera. The controversial decision reverses a lower court finding that digital devices were "an extension of our own memory" making them too personal for government searches. It remains unclear whether a traveler must help the government sift through digital data by providing login information. Read the ruling here.

Warez David M. Fish Going?

To jail. David M. Fish earlier this week was sentenced to 30 months in prision on criminal copyright infringement and circumvention charges. Prosecutors accused Fish of operating 'warez' sites offering thousands of copyright protected movies, music, and software titles for download. In what could be one of many more convictions to come, the California case is part of Operation Copycat, an investigation by the FBI and U.S. Attorney's Office targeting online warez groups.

iPhone Price Cut Coming

Those holding out for a 3G capable iPhone may not have to wait much longer, but, that's not all late adopters can look forward to. According to a Forbes report citing "a person familiar with the strategy," when the 3G iPhone ships this summer, AT&T will slash the price by as much as $200, bringing the cost of entry down to just $199 with a two-year contract agreement. More of what's in store for the new iPhone here.

Phenom(enal) Headache

Responding to reports suggesting trouble when pairing high-end Phenom chips with select motherboards, AMD this week confirmed that some board suppliers are mismatching parts. The problem stems from trying to mate higher frequency 125W Phenom processors (9750 and 9850) with certain lower end 780G based motherboards. "We've never made claims that 780G motherboards are enthusiast-class motherboards," said Jake Whitman, an AMD spokesman.

Ubisoft Giveth DX10.1 and Taketh DX10.1 Away

Gamers were stoked to learn that the first DX10.1 title had not only emerged, but resulted in a sizeable performance difference, but Ubisoft says 'not so fast.' It's true that Assassin's Creed, an NVIDIA 'The Way It's Meant To Be Played' title, showed up to a 20 percent improvement on DX10.1 capable systems, but Ubisoft has now said it plans to remove DX10.1 support to address concerns over alleged graphical glitches. Because only certain AMD/ATI videocards currently support DX10.1, conspiracy theories over Ubisoft's decision have been raised. Don your tinfoil hat and read more here.

3DMark Vantage

Here's one for the benchmarking enthusiasts: Futuremark has released 3DMark Vantage, a partial successor to 3DMark06 which introduces DirectX 10 and Shader Model 4.0 support. That means XP users need not apply, nor anyone without a compatible videocard. Based on a completely new rendering engine, 3DMark Vantage includes two new graphics tests, two new CPU tests, and several new feature tests.