Are you kidding. The HD 7970 is a fantastic overclocker. At stock voltage 1.1 Ghz is easy. Even at stock speeds there are quite a few demanding games which HD 7970 wins like crysis, crysis warhead, metro 2033, alan wake, stalker COP. When OCed the scenario is even more favourable. And this is without voltage OC in the picture. With voltage OC 1.2+ Ghz clocks are easy. check out this review
http://www.hardocp.com/article/2012/..._card_review/7
the OC'd HD 7970 at 2560 x 1600 Ultra 4X MSAA rocks at avg 50.7 fps. The stock GTX 680 with Turbo upto 1.1 Ghz does 42.9 fps. The GTX 680 needs to scale at 100% to 1.3 Ghz (42.9 x 1.3 / 1.1 = 50.7) to reach the same perf . The GTX 680 does not scale as well as HD 7970 at high clocks and a 100% scaling is not going to happen. For all those people who tell Nvidia runs better on BF3 this is a rebuttal.
All that needs to happen is price parity of ref HD 7970 with ref GTX 680. considering the compute benefits, larger framebuffer,
higher bandwidth which is already helping in bandwidth hungry games like crysis warhead, metro 2033, alan wake and will do more so in future the HD 7970 will be a no brainer at price parity. People who spend USD 500 on a graphics card are definitely going to check out OC and then settle at stable OCs.
So the stock speed arguments don't hold merit. Wait till the custom HD 7970 models like Sapphire TOXIC HD 7970 are pitted against the custom GTX 680 designs from EVGA. Then you will understand what I said.
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