Monday, 27 September 2010 10:38

Radeon HD 6700 detailed on slides

Written by Slobodan Simic

Full specs for Bart XT and Pro

Following the leak from Chiphell a few weeks ago, a forum member on Pcinlife published a full slide taken from the what appears to be a legit AMD slide. This time we can see full details of both Radeon HD 6750 and Radeon HD 6770, or simply Bart Pro and XT.

The slide compares Radeon HD 6700 series to couple of Radeon HD 5700 and 5800 series cards, which gives you a more clear picture of what we can expect once these cards show up at the market. The Radeon HD 6750 should be placed and perform close to the HD 5850, and although it has the same clocks as the Radeon HD 5850 (725MHz for the Core and 1000MHz for memory) it will have less Stream Processors, 280 compared to the 288 on the HD 5850, less texture units, 56 compared to the 72 on the HD 5850, which also means less compute performance that ends up at 1624 TFlops compared to the 2088 on the HD 5850.

The HD 6770 ends up close to the HD 5870. It has the same amount of Stream processors, 320, although they are a bit differently organized. It has less texture units as well, so the HD 6770 ends up with 64 (16x4) compared to 80 on the HD 5870. This one should end up clocked at 900MHz for the core and 1050MHz (4.2Gbps) for memory.

The specs look quite good for now, and it looks like AMD will sell these ones quite easily. This also means that Cayman, high-end parts, will end up a lot faster than the HD 5800 series, at least when compared how well the HD 6700 compares to the previous HD 5700 series.

You can find the slide here.

Update: We're sorry for the inconvenience and confusion caused by a part of this article, as it had to be noted that the HD 6770 has the same amount of SPs per module as the HD 5870 and not the same amount in total. The HD 5870 of course has 1600 SPs orginized in five modules (320SP x5), while the HD 6770 has the same amount of SPs per module but only has four modules thus ends up with 1280SPs. Same thing goes for the HD 6750 that has four modules with 280SPs per module so ends up at 1120SPs, while the HD 5850, of course, has five modules with 288SPs per module, or with simple math, 1440SPs.

Last modified on Monday, 27 September 2010 17:43
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+44 #1 The_Wolf88 2010-09-27 12:07
Whooo !

6770 = 5870 !?

6750 = 5850 ?!

This is awesome ! I wonder how much power 6870 will bring!! I think it will wipe 5970 for sure !!
+46 #2 LuxZg 2010-09-27 12:32
If this is true (and I sure hope it is!) I'll have a nice upgrade from my HD4890 to something like HD6770, specially if prices stay similar to HD5770.. 25-30% faster, at roughly same power consumption.. and like I've said - if it will have price of HD5770.. I'm in!
+62 #3 spede 2010-09-27 13:08
This so called "minor refresh", as stated here previously, doesn't seem to be so minor after all.
+24 #4 Nerdmaster 2010-09-27 13:21
We will see in two weeks.
+26 #5 leftiszi 2010-09-27 13:23
With these specs, the 6770 should come in between the 5850 and the 5870 performance wise.

Although I wish it too, I don't see how a part with such performance could be priced at 5770 level, ie 150 euros, while the 5850 costs 250 euros and the 5870 350 euros.

I'd be more than happy if it cost like 200 euros, with the 6850 at 300- and the 6870 at 400-
+22 #6 Bl0bb3r 2010-09-27 15:56
@leftiszi, I think you hit the nail on the head... the pricing won't be set based on previous model number similarity, like 5770 and 6770. It will be set based on die size, bus complexity, power circuitry and memory chip model. All of these requirements have had a bump towards higher performance so expect the price to also have one... a bump, that is.

I wouldn't be surprised if 6770 would cost as much a 5850 or more if it beats it and hopefully, 5850 will drop a bit.

Anyway... I'm looking forward to seeing what NI has to offer in real-world usage, other then specs on the paper, which are nice but not satisfying.
+20 #7 Patriot 2010-09-27 16:59
Sigh... lol... look at the slide skip the article... the author clearly knows nothing of ati...

The 6770 will fall between the 5850 and 5870...
The 6770 Does not have the same amount of SP as the 5870...

the 5870 has 5 (320sp) modules
or 1600sp...@850mhz 2.7Tflop

the 6770 has 4 (320sp) modules
or 1280sp @900mhz 2.3Tflop

the 5850 has 5(288sp) modules
or 1440sp @ 725mhz 2Tflops

the 6750 has 4(280sp) modules
or 1120sp @ 725mhz 1.6Tflop

the 6870 is expected to have a 6th so module and run at 900mhz... so 1920sp @ 900mhz gets a very nice increase in performance...

but until these are released... its all fud.
+10 #8 Sethroque 2010-09-27 18:24
Can't wait for price drops 8)
+6 #9 Bullgodking 2010-09-27 18:27
if you compare the 5750 to the 6750 and the 6770 to the 5770, you can see that almost everything is doubled. So does that mean the 6870 will be doubled to. Sounds like they gonna be more powerful than everyone thought.
+8 #10 yourma2000 2010-09-27 18:39
If the 6770 follows the pattern of the 5770 and 5870 then the specs for the 6870 will be double the 6770

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