
AMD’s Radeon HD 7990 pushes the highest practical frame rate, losing some of the card’s rendering effort to runts and drops. It does significantly better than two Radeon HD 7970s in CrossFire, though, which get hammered by the number of runts that only show up on-screen for a couple of milliseconds. Prototype software helps the 7990 a little. But because Tomb Raider is the fourth title with latency-specific optimizations already rolled in to Catalyst 13.3, it’s possible that a lot of the gains are already baked-in.

The thin, dotted lines again reflect hardware frame rates, while solid lines are indicative of what you actually see once runts and dropped frames get disregarded.

Although it incurs the highest 95th percentile latency, AMD Radeon HD 7990 with Catalyst 13.5 Beta 2 yields better average frame time variance than the other two Radeon-based data points.
Unfortunately, while those numbers seem fairly low, volunteers we brought in to test routinely fingered the Radeon HD 7990 as less consistent than GeForce GTX 690 after swapping between platforms armed with both cards.
- AMD's Malta Becomes The Radeon HD 7990
- Much-Improved Acoustics, With One Nagging Issue
- Test Setup, An Explanation Of FCAT, And Benchmarks
- Results: 3DMark
- Results: Battlefield 3
- Results: BioShock Infinite
- Results: Borderlands 2
- Results: Crysis 3
- Results: Far Cry 3
- Results: Hitman: Absolution
- Results: The Elder Scrolls V: Skyrim
- Results: Tomb Raider
- Radeon HD 7990 Vs. GeForce GTX 690: The Pepsi Challenge
- Noise Measurements And Fan Speed
- Noise Analysis: Frequency Spectrum And Videos
- OpenCL: General-Purpose Computing
- OpenGL: Synthetic Gaming Performance
- Can The World’s Best Bundle Save Radeon HD 7990?
If you're looking to game at 1920x1080, I can save you a ton of money by recommending something less than half as expensive. This card is for folks playing at 2560 *at least.* Next time, I'm looking to get FCAT running on a 7680x1440 array
Thats some nice gains from the prototype driver.
Power is the one thing I didn't have time for. We already know the 7990 is a 375 W card, while GTX 690 is a 300 W card, though. We also know AMD has Zero Core, which is going to shave off power at idle with one GPU shut off. I'm not expecting any surprises on power that those specs and technologies don't already insinuate.
If you're looking to game at 1920x1080, I can save you a ton of money by recommending something less than half as expensive. This card is for folks playing at 2560 *at least.* Next time, I'm looking to get FCAT running on a 7680x1440 array
People mostly buy Intel (I3/i5 a lot more than i7) just because Intel can provide top of the line CPUs in the i7 Extreme range. Same goes here, if some hears that AMD has a better 1000$ card than Nvidia, they will probably spend 100-200$ for an AMD card and not Nvidia.
Power ... unless you`re not a guy who saves 2 years in a row for this card to have a 6 months nerd gaming glory you won`t care that much how power hungry this card is.
Is just like asking Ferrari or Lamborghini how many mpg their cars do.
2. Regarding the fan noise and the hum : It would be interesting to know how much noticable is the fan noise and the hum with increaseing listner distance. IOW, which noise is more noticable at near/medium/far distances ?
Drivers still are AMD's biggest weakness. I would have expected AMD to havetop-notch , A-one drivers to go with the HD7990. After all, this is AMD's halo product. The first impression is what matters. The conclusion is basically "Card is good. Drivers are poor, with better coming in future". So ultimately its selling a promise, which may/may not succeed. It appears to me that AMD doesnt value its own products.
Also, has the Video Conversion Engine in AMD taken off ?
Unfortunately I'm really not sure the whining issue is something that can be fixed with a driver update. I think it has more to do with the hardware on the board than anything else. But it's good to see that AMD has finally recognized the frame time variance and micro-stutter problem, and are actively pursuing a solution. Although the test in the review was limited, I think it's telling that every gamer tested was able to recognize the difference between AMD and Nvidia cards, and even the difference brought by AMD's own prototype drivers.
I know and that's what I meant by hopping that they would have addressed the whining with this card. It happens to all their cards, well the ones that I have owned especially the XFX and if they knew what causes then they should have fixed it.
Let's hope that the prototype driver will also translate to better drivers for all their GPUs and address the frame rate issues. Other than that, it is a good card but I think, for my personal use since I was waiting to see what this can offer, I will just get the GTX 680 or the GTX 780 next month and will definitely go back to AMD if they address those issues.
For everyone seeking power and heat results:
http://www.anandtech.com/show/6915/amd-radeon-hd-7990-review-7990-gets-official/16
It consumes a lot of power under load, substantially more than the GTX690, but like Chris said that's to be expected. The big difference with the 7990 seems to be acoustics in relation to temps at load. It's a massive improvement over the 6990, and pretty much on par with the GTX690. Unfortunately the coil whine seems to undo a lot of the improvements made to the stock cooler, but all things considered it's pretty impressive what AMD was able to do in this area, especially in comparison to unofficial solutions from other vendors (dual slot, only requires 2 8-pin).
Sorry, that's a reading fail on my part. Thought you said, 'hope they'll address the whining' or something to that effect.
No problem.