AMD's Radeon HD 6990: The New Single Card King
by Ryan Smith on March 8, 2011 12:01 AM EST- Posted in
- AMD
- Radeon HD 6990
- GPUs
Crysis: Warhead
Kicking things off as always is Crysis: Warhead, still one of the toughest game in our benchmark suite. Even 3 years since the release of the original Crysis, “but can it run Crysis?” is still an important question, and for 3 years the answer was “no.” However as we’ll see the 6990 changes that: full Enthusiast settings at a playable framerate is finally in the grasp of a single card.
It should come as no surprise that with the 6990, AMD has hit a few different important marks on Crysis for a single card thanks to the card’s near-6970CF performance. As far as our traditional 2560 benchmark goes, the 6990 cracks 60fps, meaning we can finally play Crysis at a perfectly smooth framerate at 2560 with our tweaked settings on what is more or less a single video card. Perhaps more importantly however, performance is to the point where Crysis in full enthusiast mode is now a practical benchmark. Thanks in big part to the extra VRAM here, the tops the 5970 by nearly 30%, coming in at 42.8fps. This is still a bit low for a completely smooth framerate, but it is in fact playable, which is more than we can say for the 5970.
Overall Crysis does a good job setting the stage here for most of our benchmark suite: the performance of the card is consistently between the 6950CF and 6970CF, hovering much closer to the former. Compared to NVIDIA’s offerings the 6990 is solidly between the GTX 580 and GTX 580SLI, owing to the fact that NVIDIA doesn’t have a comparable card. The GTX 580SLI is faster, but the 580 is also still the fastest single-GPU card on the market, meaning it commands a significant price premium.
Overclocked to uber mode however only shows minimal gains, as the theoretical maximum gain is only 6% while the real world benefit is less; uber mode alone will never have a big payoff.
As far as minimum framerates are concerned the story is similar. For some reason the 6990 underperforms the 6950CF here by a frame or two per second, which given the 6990’s mostly superior specs leads us to believe that it’s a limitation of PCIe bus bandwidth. Meanwhile we can clearly see the benefits of more than 1GB of VRAM per GPU here: the 6990 walks all over the 5970.
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james.jwb - Tuesday, March 8, 2011 - link
I doubt it. That would be 80 dBA at ear level compared to whatever Ryan used. At ear level it's going to be a lot lower than 80.Still, that doesn't take away the fact that this card is insane...
Belard - Tuesday, March 8, 2011 - link
The card needs 3 slots to keep cool and such. They should have made a 2.5-slotted card, but with a bit of a twist.Channel the AIR from the front GPU chamber into a U-duct, then split into a Y that goes around the fan (which can still be made bigger. The ducts then exhaust out the back in a "3rd slot". Or a duct runs along the top of the card (out of spec a bit) to allow the fan more air space. It would add about $5 for more plastic.
Rather than blowing HOT air INTO the case (which would then recycle BACK into the card!
OR - blowing HOT air out the front and onto your foot or arm.
Noise is a deal killer for many people nowadays.
strikeback03 - Tuesday, March 8, 2011 - link
That ductwork would substantially reduce the airflow, making a sharp turn like that would be a large bottleneck.burner1980 - Tuesday, March 8, 2011 - link
I´m always wondering why reviews always neglect this topic. Can this card run 3 monitors @ 1920x1080p 120 HZ. 120 HZ monitors/beamer offer not only 3D but foremost smooth transitions and less screen tearing. Since this technique is available and getting more and more friends, I really would like to see it tested.Can anybody enlighten me ? (I know that Dual link is necessary for every display and that AMD had problems with 120 HZ+eyefinity) Did they improve?
silverblue - Tuesday, March 8, 2011 - link
...with two slightly downclocked 6950s. Alternatively, a 6890, albeit with the old VLIW5 shader setup. As we've seen, the 5970 can win a test or two thanks to this even with a substantial clock speed disparity.The 6990 is stunning but I couldn't ever imagine the effort required to set up a machine capable of adequately running one... and don't get me started on two.
Figaro56 - Tuesday, March 8, 2011 - link
I'd love to see Jessica Alba's beaver, but that aint going to happen either.qwertymac93 - Tuesday, March 8, 2011 - link
AUSUM SWITCHhttp://img202.imageshack.us/img202/8717/ausum.png
KaelynTheDove - Tuesday, March 8, 2011 - link
Could someone please confirm if this card supports 30-bit colour?Previously, only AMD's professional cards supported 30-bit colour, with the exception of the 5970. I will buy either the 6990 or Nvidia's Quadro based on this single feature.
(Because somebody will inevitably say that I don't need or want 30-bit colour, I have a completely hardware-calibrated workflow with a 30" display with 110% AdobeRGB, 30-bit IPS panel and the required DisplayPort cables. Using 24-bit colour with my 5870 CF I suffer from _very_ nasty posterisation when working with high-gamut photographs. Yes, my cameras have a colour space far above sRGB. Yes, my printers have it too.)
Gainward - Tuesday, March 8, 2011 - link
Just a heads up for anyone buying the card and wanting to remove the stock cooler.... There is a small screw on the back that is covered by two stickers with (its under the two stickers that look like a barcode). Well removing that you will then notice a void logo underneath it... I just wanted to point it out to you all...Didnt bother us too much here seen as ours is sample but I know to some droppin £550ish UK is quite a bit of cash and if all you are doing is having an inquisitive look it seems a shame to void your warranty :-S
mmsmsy - Tuesday, March 8, 2011 - link
I'd like to know how do you benchmark those cards in Civ V. I suppose it's the in-game benchmark, isn't it? Well, I read some tests on one site using their own test recorded after some time spent in the game using FRAPS and I'm wondering if using the in-game test is that really different scenario. According to the source, in the real world situation nVidia cards' performance show no improvement whatsoever over AMD's offerings. If you could investigate that matter it would be great.