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
The Test
Starting with the launch of the 7970 we will be using our new GPU testbed, replacing both our hardware and most of our benchmarks. On the hardware side we’re using an Intel Core i7 3960X overclocked to 4.3GHz on an EVGA X79 SLI motherboard, giving us access to PCIe 3.0 while keeping most CPU bottlenecks at bay. While we’re only looking at a single card today, based on some informal surveys for multi-GPU testing we will continue to test our cards adjacent to each other to represent the worst case scenario, as it turns out there are a number of users out there who do use that arrangement even if they’re not in the majority.
On the software side we’ve refreshed most of our benchmarks; the suite is tilted towards DX11, but there are still enough DX9/10 tests to get a good idea of how new cards compare to pre-DX11 cards. On that note I know we have a lot of Skyrim fans out there, and while we wanted to include Skyrim benchmark we’re having trouble coming up with any good test cases (that don’t involve INI hacking) that aren’t incredibly CPU limited. If you have any suggestions, please drop me a line.
For drivers on AMD’s cards we’re using AMD’s beta 8.921.2-111215a drivers, which identify themselves as Catalyst 11.12 but are otherwise indistinguishable from the Catalyst 12.1 preview released last week. On that note, for those of you who have been asking about support for D3D11 Driver Command Lists – an optional D3D11 feature that helps with multithreaded rendering and is NVIDIA’s secret sauce for Civilization V – AMD has still not implemented support for it as of this driver.
For NVIDIA’s cards we’re using NVIDIA’s latest beta driver, 290.36.
Finally, as we’ve only had a limited amount of time with the 7970, we’ve narrowed our suite of cards just slightly in order to make the deadline. For those of you curious about how middle-tier cards such as the GTX 560 series and the Radeon HD 6800 series or various multi-card SLI and CrossFire setups compare, we’ll be adding new results to Bench throughout the rest of the month, and Eyefinity soon after that. For the time being since we only have a single card, we’re focusing on single card results with a single monitor.
| CPU: | Intel Core i7-3960X @ 4.3GHz |
| Motherboard: | EVGA X79 SLI |
| Chipset Drivers: | Intel 9.2.3.1022 |
| Power Supply: | Antec True Power Quattro 1200 |
| Hard Disk: | Samsung 470 (240GB) |
| Memory: | G.Skill Ripjaws DDR3-1867 4 x 4GB (8-10-9-26) |
| Video Cards: |
AMD Radeon HD 7970 AMD Radeon HD 6990 AMD Radeon HD 6970 AMD Radeon HD 6950 AMD Radeon HD 5870 AMD Radeon HD 5850 AMD Radeon HD 4870 AMD Radeon HD 3870 NVIDIA GeForce GTX 590 NVIDIA GeForce GTX 580 NVIDIA GeForce GTX 570 NVIDIA GeForce GTX 470 NVIDIA GeForce GTX 285 NVIDIA GeForce 8800GT |
| Video Drivers: |
NVIDIA ForceWare 290.36 Beta AMD Catalyst Beta 8.921.2-111215a |
| OS: | Windows 7 Ultimate 64-bit |
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SlyNine - Friday, December 23, 2011 - link
Are you nuts, the 5870 was nearly 2x as fast in DX 10/9 stuff, not to mention DX11 was way ahead of DX10. Sure the 6970 isn't a great upgrade from a 5870, but neither is the 7970.Questionable Premise
CeriseCogburn - Thursday, March 8, 2012 - link
That happened at the end of 2006 with the G80 Roald. That means AMD and their ATI Radeon aquisition crew are five years plus late to the party.FIVE YEARS LATE.
It's nice to know that what Nvidia did years ago and recently as well is now supported by more people as amd copycats the true leader.
Good deal.
Hauk - Thursday, December 22, 2011 - link
A stunningly comprehensive analysis of this new architecture. This is what sets Anandtech apart from its competition. Kudos Ryan, this is one of your best..eastyy - Thursday, December 22, 2011 - link
its funny though when it comes to new hardware you read these complicated technical jargon and lots of detailed specs about how cards do things different how much more technically complicated and in the end for me all it means is...+15fps and thats about itas soon as a card comes out for say 150 and the games i play become slow and jerky on my 460 then i will upgrade
Mockingbird - Thursday, December 22, 2011 - link
I'd like to see some benchmarks on FX-8150 based system (990fx)piroroadkill - Friday, December 23, 2011 - link
Haha, the irony is that AMD is putting out graphics cards that would be bottlenecked HARDCORE by ANY of their CPUs, overclocked as much as you like.It's kind of tragic...
Pantsu - Friday, December 23, 2011 - link
The performance increase was as expected, at least for me, certainly not for all those who thought this would double performance. Considering AMD had a 389mm^2 chip with Cayman, they weren't going to double the transistor count again. That would've meant the next gen after this would be Nvidia class huge ass chip. So 64% more transistors on a 365mm^2 chip. Looks like transistor density increase took a bit of a hit on 28nm, perhaps because of 384-bit bus? Still I think AMD is doing better than Nvidia when it comes to density.As far as the chip size is concerned, the performance is OK, but I really question whether 32 ROPs is enough on this design. Fermi has 48 ROPs and about a billion transistors less. I think AMD is losing AA performance due to such a skimpy ROP count.
Overall the card is good regardless, but the pricing is indeed steep. I'm sure people will buy it nonetheless, but as a 365mm^2 chip with 3GB GDDR5 I feel like it should be 100$ cheaper than what it is now. I blame lack of competition. It's Nvidia's time to drop the prices. GTX 580 is simply not worth that much compared to what 6950/560Ti are going for these days. And in turn that should drop 7970/50 price.
nadavvadan - Friday, December 23, 2011 - link
Am I really tired, or is:" 3.79TFLOPs, while its FP64 performance is ¼ that at 947MFLOPs"
supposed to be:
" 3.79TFLOPs, while its FP64 performance is ¼ that at 947-G-FLOPs"?
Enjoyed the review as always.
Death666Angel - Friday, December 23, 2011 - link
Now that you have changed the benchmark, would it be possible to publish a .pdf with the relevant settings of each game? I would be very interested to replicate some of the tests with my home system to better compare some results. If it is not too much work that is (and others are interested in this as well). :Dmarc1000 - Friday, December 23, 2011 - link
What about juniper? Could it make it's way to the 7000 series as a 7670 card? Of course, upgraded to GCN, but with same specs as current cards. I guess that at 28nm it would be possible to abandon the pci-e power requirement, making it the go-to card for oem's and low power/noise systems.I would not buy it because I own one now, but I'm looking forward to 7770 or 7870 and their nvidia equivalent. It looks like next year will be a great time to upgrade for who is in the middle cards market.