AMD Radeon 6700 Details Leaked to the Web

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craigbooth

Please let there be Mini DisplayPorts on these.

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dedgar

It would've been nice to have the 68XX series specs included in that chart. Guess we'll all just have to wait on them.

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Nyarlathotep

...what's the point of a new naming scheme if all of the new parts are in line with the existing parts? Is AMD simply releasing the budget and mainstream parts of their next generation first? 

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rstat1

Comparing a 6770 to a 5870 is like comparing the 5770 to the 5870. Yea it will be slower.

Compare the 6770 to a 5770 and you can see that it really is indeed faster.

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GaryIKILLYOU

... run Crysis maxed?

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monkeykid753

...but not Crysis 2, which releases a few months after.

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armada439

Umm yeah so... high bandwidth does not necessarily make high performance, otherwise the 2900XT would still be kicking.

And 6770 won't perform close to the 5870 at all.  Sorry.

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Nimrod

lol sounds like some ones pissed that they just bought a 5 series!

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Keith E. Whisman

Hey Paul, look at the specs for the 6770 and 5870 again, they don't exactly match up all that well. The 6770 is build on the same 40NM process and the 6770 have 320fewer stream processors than the 5870 and 16 fewer texture units compared to the 5870 and the 6770 has a 1050Mhz memory clock compared to the 5870's 1200Mhz. The 5870 specs are far better than those of the 6770 and therefore do not warrant your optimistic view that the 6770 will "somewhat somewhat comparable to the HD 5870 in overall performance."

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Paul_Lilly

I stand by saying that they appear "somewhat comparable," keyword there being "somewhat." As you pointed out, they're both built on a 40nm manufacturing process. Memory clock is within 150MHz (and that's effective), memory bandwidth and data rate are both at least in the same ballpark, 6770 has a slightly higher pixel fillrate (28.8GPixel/s vs 27.2GPixel/s) and engine clock (900MHz vs 850MHz), and the compute performance is pretty close.

Keep in mind the 6770 also has fewer texture units and shaders than the 5850, so in that regard, the 5850 is also better spec'd. The performance numbers, however, tell a different story. Either way, it's all speculation until we get our hands on the next-gen parts.

-Paul Lilly

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Keith E. Whisman

I'd be willing to bet money that the 6770 is a one notch under the top dog, the 6870. I'd also bet money that the 6870 is going to blow the pants off the 5870. But yeah, we are all entitled to our opinions on this. The 6770 specs fall short of the 5870, but better than the 5850. Perhaps with newer technology it'll probably perform much closer to the 5870 than the 5850, and yeah, like you said "somewhat". Looking at the latest drivers from AMD, speeds have really come up, so who knows. 

 

Great article Paul, you got us fantasizing about the next gen graphics cards. Can't wait to see the numbers. Would be interesting to see if Nvidia has a release about the same time to combat AMD.

 

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aviaggio

But it's a different, and presumably more efficient, chip. So while the actual number of stream processors and texture units might be lower they are likely to be faster than the previous versions, which allows comparable performance.

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Keith E. Whisman

The available data does not show that, in fact the available data shows the same 40nm process and appears that everything is the same, only slower or less. 

If it were a die shrink I would agree, but it's not. If there were data showing improved technology allowing for more to mean less actually hardware, then I would also agree with you. 

Only time will tell just what kind of performance the 6770 will offer compared to the 5870. 

If there is an improvement in performance, I would think it would have something to do with improved instructions rather than the hardware. 

Even the available data shows that the 6770 isn't capable of the same throughput of the 5870 and the 6770 is slower in Compute Performance compared to the 5870. So just looking at the available numbers, the 6770 is going to be significantly slower than the 5870. Perhaps the 6770 will have a small advantage over the 5850.

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dedgar

Don't confuse die size and actual layout. You can design many chips on the same die size but the designs are entirely different. They could have redesigned the chip for better efficiency and retained the same die size. Thereby getting better numbers.

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Danthrax66

Yeah but the 5870 and 5850 aren't that far apart in real world performance so if this chip is released at the standard pricing point of the x770 series parts it will be an amazing value and will probably only be a few frames off of the 5870.

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lunchbox73

I hate it when people use horsepower to describe computer performance. Just say power.

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dedgar

You're just gonna have to wait for the official announcement of the card or more 'leaked' stuff. Any info concerning heat and power is just speculation at this time.

 

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Larzs13

How much power will it pull will it be less than  a Ge force 480 Fermi or just about the same and what is the heat out put

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Larzs13

How much power will it pull will it be less than  a Ge force 480 Fermi or just about the same and what is the heat out put

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