Tuesday, March 1st 2011

AMD Radeon HD 6990 Press Deck Leaked

While it is slated for release on the 8th of this month, AMD's Radeon HD 6990 was detailed to sections of the industry. It wasn't long before someone leaked the press deck, revealing all the specifications and AMD performance estimates. The Radeon HD 6990 is a dual-GPU graphics card making use of two AMD Cayman GPUs in internal CrossFire. Cayman is the same GPU that is at the center of Radeon HD 6950 and HD 6970.

In the HD 6990, each Cayman is configured to use all 1536 of its VLIW4 stream processors. The GPU core is clocked at 830 MHz, and memory at 1250 MHz (5.00 GHz GDDR5 effective). The 256-bit wide memory interface of each GPU is populated with 2 GB of memory, setting the total board memory to 4 GB. Display IO includes five connectors, including one DVI and four mini-DisplayPort 1.2. While the HD 6990 is said to outperform GeForce GTX 580, AMD is also bracing itself for NVIDIA's dual-GPU GTX 590, with HD 6990 OC variants following an official specification of 880 MHz core, and the same 5.00 GHz memory.

Two power two GPUs with over 2.64 billion transistors, you need a lot of power. AMD has engineered its PCB to deliver up to 450W of power. This should give you a rough idea of what the HD 6990 will draw with its PowerTune feature disabled. AMD is known for using high-quality digital PWM components on its high-end reference boards, the trend is kept up with. The HD 6990 uses two 4+2 phase PWM circuitry per GPU. The inductors and PWM chips are hand-picked to offer the least leakage and highest efficiency. The PowerTune technology throttles power to ensure the best energy efficiency. This is both a boon and a bane for enthusiasts.

Lastly, the business-end of the presentation. AMD will have relaxed CCC overdrive limits to let you crank up the clock speeds. With a typical max board power of 375W and a PCB designed for 450W, there should be some a decent overclocking headroom. In its comparison with NVIDIA products, AMD used the GeForce GTX 580, the green team's fastest graphics card. When put through batteries of DirectX 9, DirectX 10/10.1, DirectX 11, and OpenGL game tests, AMD claims its HD 6990 to be faster than GTX 580 by 67% average, and up to 110% faster in some cases. The HD 6990 OC variant is claimed to push that a little higher, with up to 8% increase in performance over the HD 6990 reference.

Source: DonanimHaber
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48 Comments on AMD Radeon HD 6990 Press Deck Leaked

#1
jmcslob
OK....So you can play Crysis on the jumbo tron...nice
So it's like a dual unlocked 6950
Posted on Reply
#2
Jstn7477
All that huge power circuitry and the PCIe splitter should be right under the fan, which is good if they use that cooling advantage. Hopefully this thing will push some decent numbers and finally replace the HD 5970.
Posted on Reply
#3
DriedFrogPills
by: jmcslob
OK....So you can play Crysis on the jumbo tron...nice
So it's like a dual unlocked 6950
slightly downclocked dual 6970 more like as the OC version runs at stock 6970 speeds. Waiting for some leaked specs of the 590 as well now
Posted on Reply
#4
Imsochobo
by: jmcslob
OK....So you can play Crysis on the jumbo tron...nice
So it's like a dual unlocked 6950
Can we soon get over this crysis nonsense crap.
My pc plays crysis at 1080P very high no problems, and I don't even have a high end pc......
There is games that require more and look like shit, in fact, black ops runs at same fps as crysis so something is crytek really doing right.

Just outdated, and i've tried crysis 2 and really don't have any issues there either :P

anyways, BEAST! can't see how nvidia can top this card, without blowing the 500W territory.
Posted on Reply
#5
claylomax
As expected it uses two 8-pin.
Posted on Reply
#6
mtosev
Expected price? I hope not more than 550EUR.
Posted on Reply
#7
claylomax
by: mtosev
Expected price? I hope not more than 550EUR.
More like 600 euros, I think.
Posted on Reply
#8
JEskandari
I don't get it if typical Gaming power is 350w or 415w
then what about 300w Maximum of PCI slot ?
Posted on Reply
#9
claylomax
by: JEskandari
I don't get it if typical Gaming power is 350w or 415w
then what about 300w Maximum of PCI slot ?
An overvoltaged GTX 480 draws more than 350w and that's with a 6+8 pin power connector.
Posted on Reply
#11
the54thvoid
My two or three cents:

2 x 2GB memory is going to be quite substantial over the 1.5GB at that resolution (2560x1600) so it's a no brainer it should perform well against a single gpu.

With AA cranked up on newer games it's lead is much less impressive. Given that with any absolute top end several hundred dollar card, you'd expect to play with maximum AA settings, it would be interesting to see the relative performance charts.

I'm sure NV will do the same when their card comes out. We can wait for W1zz to compare them - hopefully do a 3 screen match up?
Posted on Reply
#12
DriedFrogPills
by: the54thvoid
My two or three cents:

2 x 2GB memory is going to be quite substantial over the 1.5GB at that resolution (2560x1600) so it's a no brainer it should perform well against a single gpu.

With AA cranked up on newer games it's lead is much less impressive. Given that with any absolute top end several hundred dollar card, you'd expect to play with maximum AA settings, it would be interesting to see the relative performance charts.

I'm sure NV will do the same when their card comes out. We can wait for W1zz to compare them - hopefully do a 3 screen match up?
except 2x2gb memory still only equals 2gb usable frame buffer
Posted on Reply
#13
the54thvoid
Yes, I know but each card still has that 2GB. Come to think of it, when will Sapphire make a proper one like they did with their 4GB 5970? That would be nice. :)
Posted on Reply
#14
Hayder_Master
6990 performance = -15% to 20% from 2x6970 16x by 16x with 2.0 performance
Posted on Reply
#15
Over_Lord
News Editor
450W that's it?

C'mon I expected more from you guys

:disappointed::nutkick:
Posted on Reply
#16
HalfAHertz
by: thunderising
450W that's it?

C'mon I expected more from you guys

:disappointed::nutkick:
Same here. I expected more creativity from the red team.:shadedshu
Posted on Reply
#17
halfwaythere
I'm afraid something got lost in translation: they are not releasing two cards but one with an oc switch.

Posted on Reply
#18
ivicagmc
If it's cold, just put that card and play games... 450W, that is more than my PC all together...
Posted on Reply
#20
Fourstaff
Suddenly "6870x2" seems a much more sensible idea, given the power consumption figures.
Posted on Reply
#21
W1zzard
by: HalfAHertz
That sounds AUSUM :D
amd spelling fail

code:

AMD
Ur
Spelling
sUcks
Much
Posted on Reply
#23
pantherx12
by: thunderising
Umm 1.2v for normal factory setting and LOWER 1.175v for Overclock enthusiasts?

thats funny
1.120 vs 1.175


*wink* :laugh:
Posted on Reply
#24
slyfox2151
by: thunderising
Umm 1.2v for normal factory setting and LOWER 1.175v for Overclock enthusiasts?

thats funny
er no,

1.12 for factory.... 1,175 for overclock.
Posted on Reply
#25
alwayssts
by: W1zzard
amd spelling fail

code:

AMD
Ur
Spelling
sUcks
Much

I fucking lol'ed. Always nice to see that attitude from the boss man. :toast:

Poor badly-named switch, gettin' no respect.

AMD's newly-found marking department just couldn't quit while they were ahead.

"It's not a workaround, it's a feature...and it's AUSUME!"
Posted on Reply
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