Overclocking: Game & Compute Performance

We’ll keep the commentary thin here, but overall the overclocked performance of the 7950s looks very good. The XFX 7950 BEDD has the lead among the 7950s due to its slightly higher overclock of 1050MHz, while the 7950s as a whole enjoy anywhere between a 2% to 10% lead over the 7970. It’s clear that if you want a 7970’s gaming performance at a slightly lower price then the 7950 can deliver on that through overclocking—and there seems to be little reason not to pursue it—but you’re going to have to pay the price on power consumption to get there.

The compute performance gap on the other hand can’t be closed quite as easily. Overclocking can help, but if you need a 7900 series card for a heavy compute workload there’s no making up for the lost CU array; you’d still need a 7970.

Overclocking: Power, Temp, & Noise Final Words
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  • Ryan Smith - Tuesday, January 31, 2012 - link

    Thanks. It looks like the culprit is the ShareThis widget we use. I'll have our developers look at it in the morning.
  • Ananke - Tuesday, January 31, 2012 - link

    This is a wonderful but too expensive product for the targeted market niche...It will not gain user base by April to attract software developers away from Kepler...Unless NVidia really executes bad /which they will not-internal source/, AMD will be positioned worthlessly by price/performance. Anyway, I admire AMD and I use their products, just their strategy has been lost recently.
  • gnorgel - Tuesday, January 31, 2012 - link

    It seems quite pointless to me to benchmark an OC 7950 vs a stock clocked 7970.
    Anyone who OCs a 7950 would OC his 7970 too. The interesting question is how these 2 OCed Cards perform against each other - this decides whether the the price difference is worth it or not.
  • kmmatney - Tuesday, January 31, 2012 - link

    The best way to get performance per dollar is at this website:

    http://www.videocardbenchmark.net/gpu_list.php

    and sort by "Video Card Value". Using this chart, I bought an HD6850 today, to replace my HD4890 (which is also near the top of the chart). It has enogh performance for me. The performance per dollar is dominated by AMD at the moment.
  • kmmatney - Tuesday, January 31, 2012 - link

    My comment was supposed to be a response to another comment...
  • LuxZg - Wednesday, February 1, 2012 - link

    Now all that I wish for is direct comparison between Sapphire card and PowerColor PCS+ version.. Based on techPowerUp's review PowerColor could actually have even better cooling solution (noise/heat) which would really be amazing since Sapphire is already awesome. Make my wish come true Anand! :)
    And thanks for great review guys and showing off what a nice job AMD & Sapphire did with their new products...
  • ChosenOne - Wednesday, February 1, 2012 - link

    Here is the link for the comparison chart between PowerColor and Sapphire.
  • ChosenOne - Wednesday, February 1, 2012 - link

    forgot the link
  • LuxZg - Thursday, February 2, 2012 - link

    Thanks a lot! Seems that Sapphire has the upper hand after all, in both temperatures and noise..
  • Th-z - Wednesday, February 1, 2012 - link

    What GCN is able to do in the future is yet to been seen. They need a software ecosystem to support it, like what CUDA is having. In terms of gaming, aside from lower power consumption, the price isn't very attractive. I can see 7970 command a hefty premium, but the price of 7950 would fail AMD to capture some market share. The price they're trying to undercut is a single-GPU flagship part, which also carries a premium over 570, yet 7950 isn't a flagship part.

    In terms of gaming performance, 7950 is close to 580, which is close to 6970, yet it costs so much higher than 6970. It would be interesting to see how AMD is going to price their VLIW4 7800 and lower parts, because from the specs, they aren't much faster than 6000 series. This time, we probably won't see good performance jump with similar price points even after a major die shrink (remember they even skipped 32 nm). And I think the unnamed NVIDIA source said they was expecting more from 7970, which I think isn't a bluff, considered their Fermi debacle.

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