AMD Radeon HD 7970 Review: 28nm And Graphics Core Next, Together As One
by Ryan Smith on December 22, 2011 12:00 AM EST- Posted in
- GPUs
- AMD
- Radeon
- ATI
- Radeon HD 7000
DiRT 3
For racing games our racer of choice continues to be DiRT, which is now in its 3rd iteration. Codemasters uses the same EGO engine between its DiRT, F1, and GRID series, so the performance of EGO is has been relevant for a number of number of racing games over the years.
With DiRT 2 NVIDIA often held a slight edge in performance, and due to the reuse of the EGO engine this hasn’t really changed in DiRT 3. As a result the 7970 is still faster than the GTX 580, but not by as much as in other games. At 2560 this manifests itself as a 19% lead, while at 1920 it’s down to 6%, and embarrassingly enough at 1680 the 7970 actually falls behind the GTX 580 by just a hair. DiRT 3 is not particularly shader heavy so that may be part of the reason that the 7970 can’t easily clear the GTX 580 here, but that doesn’t fully explain what we’re seeing. At the end of the day this is all academic since everything north of the GTX 570 can clear 60fps even at 2560, but it would be nice to eventually figure out why NVIDIA does better than average here.
Meanwhile compared to the 6970 the 7970 enjoys one of its bigger leads. Here the 7970 leads by about 45% at 2560 and 1920, and finally falls slightly to 37% at 1680.
We’ve had a number of requests for more minimum framerates throughout the years, so we’re also going to include the minimum framerates for DiRT 3 as the minimums have proven to be reliably consistent in our benchmarks.
Given that the 7970 was already seeing a smaller than typical lead over the GTX 580, it’s not wholly surprising to see that it fares a bit worse when it comes to minimums. At 2560 its minimum framerate of 64.2fps means that the 7970 will deliver smooth performance every last moment, but at the same time this is only 11% better than the GTX 580. At 1920 this becomes a dead heat between the two cards. Meanwhile compared to the 6970 the 7970 is always about 45% ahead.
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MadMan007 - Thursday, December 22, 2011 - link
More stuff missing on page 9:[AF filter test image] [download table]
Ryan Smith - Thursday, December 22, 2011 - link
Yep. Still working on it. Hold tightMadMan007 - Thursday, December 22, 2011 - link
Np, just not used to seeing incomplete articles publsihed on Anandtech that aren't clearly 'previews'...wasn't sure if you were aware of all the missing stuff.DoktorSleepless - Thursday, December 22, 2011 - link
Crysis won't be defeated until we're able to play at a full 60fps with 4x super sampling. It looks ugly without the foliage AA.Ryan Smith - Thursday, December 22, 2011 - link
I actually completely agree. That's even farther off than 1920 just with MSAA, but I'm looking forward to that day.chizow - Thursday, December 22, 2011 - link
Honestly Crysis may be defeated once Nvidia releases its driver-level FXAA injector option. Yes, FXAA can blur textures but it also does an amazing job at reducing jaggies on both geometry and transparencies at virtually no impact on performance.There's leaked driver versions (R295.xx) out that allow this option now, hopefully we get them officially soon as this will be a huge boon for games like Crysis or games that don't support traditional AA modes at all (GTA4).
Check out the results below:
http://www.hardocp.com/image.html?image=MTMyMjQ1Mz...
AnotherGuy - Thursday, December 22, 2011 - link
If nVidia released this card tomorrow they woulda priced it easily $600... The card succeeds in almost every aspect.... except maybe noise...chizow - Thursday, December 22, 2011 - link
Funny since both of Nvidia's previous flagship single-GPU cards, the GTX 480 and GTX 580, launched for $499 and were both the fastest single-GPU cards available at the time.I think Nvidia learned their lesson with the GTX 280, and similarly, I think AMD has learned their lesson as well with underpricing their HD 4870 and HD 5870. They've (finally) learned that in the brief period they hold the performance lead, they need to make the most of it, which is why we are seeing a $549 flagship card from them this time around.
8steve8 - Thursday, December 22, 2011 - link
waiting for amd's 28nm 7770.this card is overkill in power and money.
tipoo - Thursday, December 22, 2011 - link
Same, we're not going to tax these cards at the most common resolutions until new consoles are out, such is the blessing and curse of console ports.