AMD Radeon HD 7970 GHz Edition Review: Battling For The Performance Crown
by Ryan Smith on June 22, 2012 12:01 AM EST- Posted in
- GPUs
- AMD
- GCN
- Radeon HD 7000
OC: Gaming Performance
Moving on to our gaming performance section, let’s see what our 15% overclock can do for gaming performance. Assuming the 7970GE’s performance continues to scale well with clockspeeds, we should see around a 10-12% real world performance gain.
Starting as always with Crysis, what was already an incredible lead for the 7970GE becomes increasingly absurd. The 7970GE OC sees a further 8% performance improvement here, pushing it past 60fps at 1920 and past 40fps at 2560. Against the stock GTX 680 it’s now leading by 35% on average framerates.
Minimum framerates on the other hand haven’t changed by nearly as much. Given what we know about PT Boost and Crysis’s love of memory bandwidth, it’s reasonable to assume we’re being held back by memory bandwidth limits here.
Moving on to Metro, the 7970GE once again gains 8-9% due to our overclock. The earlier 56W jump in power consumption at the wall makes it an expensive gain, but as it stands this is by far the fastest we’ve seen a single-GPU card perform at Metro.
With Batman we once more see gains of around 9% from our overclock. Even at 2560 our framerates are now in excess of 70fps.
With Portal 2 being one of the 7970GE’s biggest defecits relative to the GTX 680, a solid overclock can help to close the gap but it’s not enough to eliminate it. Still, it’s enough to push the average framerate over 60fps at 2560 with SSAA. The overall scaling from the overclock also looks very good here, with the 7970GE OC picking up a larger than normal 11-12%.
Finally we have AMD’s other notable weak spot, Battlefield 3. Much like with Portal 2 overclocking can’t eliminate the GTX 680’s lead, but it can significantly cut into it. At 2560 and at 1920 with MSAA this is enough to push past 60fps, making for a solid 10% performance gain from overclocking.
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HighTech4US - Tuesday, June 26, 2012 - link
LOLor
AMD sucks, but in a good way
Margalus - Friday, June 22, 2012 - link
In the normal clock tests you test 5760x1200 which is a very good thing. Could you not do the same resolution with your overclock tests as well? I would really like to see how triple monitor performance is overclocked.Another thing I was wondering, does running triple monitor at 5760x1200 increase power usage of the card or make it run hotter?
Ryan Smith - Friday, June 22, 2012 - link
1) Obviously it's a bit too late for that in this article, but we can certainly look into doing that for future articles.2) Generally speaking, no. Unless a card is already operating well under its PT limit (in which case the game is likely CPU-bound), increasing the resolution doesn't significantly shift the power consumption. The actual display controllers are effectively "free" at these power levels.
Margalus - Friday, June 22, 2012 - link
thanksmedi01 - Friday, June 22, 2012 - link
Not retaking back performance crown?cmdrdredd - Friday, June 22, 2012 - link
Nope because it doesn't win every single benchmark. Just because it wins one resolution doesn't equate to being the fastest one.CeriseCogburn - Tuesday, June 26, 2012 - link
If any of these people had been paying any attention at all in between articles ( meaning checking on the net) they would already know it takes about 1250 on the 7970 core to equal the 680oc.1000 doesn't do it. 1050 nope. 1150 nay.
Hexus already proved same core speed results in the 7970 behind. That's already been linked in replies.. so here it is because the amd fans will descend calling names and declaring liar (though they likely saw it before and just can't for the fanboy of themremember, as most brains use the delete key a lot)
http://hexus.net/tech/reviews/graphics/37209-gefor...
RaistlinZ - Friday, June 22, 2012 - link
My regular stock 7970 overclocks higher than this Ghz Edition, and does it on lower voltages. At least this makes the prices drop on regular 7970's.owendingding - Friday, June 22, 2012 - link
I think we can find a 7970ghz edition bios and put it on a regular 7970 and achieve the same performance. I also assume that you have a non reference 7979, like mine a gigabyte wind force you can get a lower temperature and 680 like performance. I just hope that bios is universal.CeriseCogburn - Tuesday, June 26, 2012 - link
Someone already posted Tom's shows it is NOT universal and cannot just be flashed to any 7970.NOPE. Amd locks you out, because they are evil.