ATI HD Radeon 5870: The Fastest Videocard Ever (PS It's $380)
Radeon HD 5870 Crushes Nvidia’s 285 GTX
In our GPU cage match, AMD’s new graphics processor delivers a stunning KO against the heavily overclocked competition
It’s a classic graphics card cage match. In one corner, the feisty, but unproven newcomer; in the other corner glowers the grizzled veteran. The newcomer, of course, is AMD’s shiny new Radeon HD 5870, weighing in at 2.15 billion transistors. The grizzled veteran is Nvidia’s 285 GTX. But this is no ordinary 285 GTX. We pitted the Radeon against a souped-up EVGA 285 GTX SSC.
The 285 GTX SSC runs its core clock at 702MHz, more than eight percent faster than the stock 648MHz; the memory clock is pumped up to 1,323MHz, about 6.5 percent faster than the base. In other words, it’s about the fastest Nvidia-based, single-chip graphics card you can get.
The newcomer is AMD’s spiffy new Radeon HD 5870. With an 850MHz engine clock and 1,200MHz GDDR5 clock, AMD’s new progeny looks like it has the chops to take on Nvidia. But we’ve been disappointed by promising GPUs from AMD’s graphics division in the past.
Not this time.
We tested three cards (also tossing in AMD’s previous best, the Radeon HD 4890) in a Core i7 975 system with 6GB of RAM, running on an Asus Rampage II X58 motherboard. All that CPU horsepower is to ensure that the benchmarks stress the graphics card, rather than be held back by CPU or RAM. We used Windows 7 Ultimate RTM as the OS.
After the smoke cleared, the 285 GTX looked like a tired fighter who’d been rope-a-doped and KO’d. The performance differences aren’t minor, they’re huge: The Radeon HD 5870 was 63 percent faster in Crysis, 32 percent faster in Far Cry 2, 33 percent faster in STALKER, and even 24 percent faster in Battleforge, an RTS that’s arguably more dependent on CPU than graphics.
This round of the endless GPU wars, then, is clearly owned by AMD, at least for single-GPU cards. And with performance like this, who wants the heat and power consumption of a dual-GPU card.
On the other hand, we won’t count Nvidia out. While Nvidia’s current high end is now relegated to the status of also-rans, the company is slaving away on its DirectX 11 GPU, code-named GT300. When that ships, expect a rematch.
BENCHMARKS GPU | Radeon HD 4890
| EVGA GTX 285 SSC
| Radeon HD 5870
|
| Crysis (FPS) | 22
| 22
| 36
|
| Far Cry 2 (FPS) | 51
| 56
| 74
|
STALKER Clear Sky (FPS)
| 24
| 27
| 36
|
BattleForge (FPS)
| 36
| 46
| 57
|
| 3DMark Vantage Performance (Score) | 12128
| 13941
| 17032
|
| 3DMark Vantage Extreme (Score) | 6276
| 4955
| 8252
|
Idle System Power (W)
| 160
| 142
| 119
|
| Full Load System Power (W) | 363
| 307
| 293
|
Best scores are bolded. All benchmarks run at 1920x1200 with 4x AA enabled and all graphics settings maxed out unless otherwise specified. Full load system power was taken during a 3DMark Vantage run at 2560x1600 with extreme settings.
Six Monitors, One Card
One of the more intriguing aspects of the Radeon HD 5870 is its use of multiple displays, something AMD dubs “Eyefinity.” The first shipping HD 5870 comes with four display connectors: two DVI, one DisplayPort, and one HDMI. Up to three monitors can be connected to any three of the four connectors. (Due to timing limitations, all four connectors can’t be used simultaneously.) Later this year, AMD will ship a card with six DisplayPort adapters, capable of connecting up to six DisplayPort-equipped monitors at the same time.
For cards supporting up to three displays, usage scenarios might include three wide screen displays in portrait mode, side by side. Cards capable of driving six simultaneous digital monitors could support a variety of display options: 3 x 2 landscape, 2 x 2, or oddball scenarios such as 3 x 1 with another 1 on top as an extended display (for flight sims, for example.)
One underlying technology making a six display configuration possible is DisplayPort. The display controller in the RV870 generates only two timing signals, suitable for DVI or VGA. DisplayPort can source external timing signals, and DisplayPort-equipped monitors can act as timing sources.