HD 7950 hands down - it's faster out of the box, with overclocking to 1100mhz, it matches a GTX680, it has more VRAM for mods, it performs much better with MSAA and doesn't fall apart in modded games like Skyrim+ENB or should you want to use MSAA.
Recent reviews with latest drivers (Cats 12.11 betas):
1) "the Radeon HD 7950 with Boost simply demolished the GTX 660 Ti across the board with regards to raw frame rates and overall game play experience across our suite of testing."http://www.hardocp.com/article/2012/11/ ... _roundup/8
2) With latest drivers, in 14 benchmarks of popular games, HD7950 boost beat GTX660Ti in 12 out of 14 games:http://www.legionhardware.com/articles_ ... ock,5.html
Even without overclocking, or 3 free games, HD7950 925mhz is now much closer to GTX670 than it is to GTX660Ti. When you consider that with overclocking, HD7950 surpasses HD7970 Ghz / GTX680 and with room to spare, it's a tremendous value right now: http://www.legionhardware.com/articles_ ... ck,13.html
Add 3 free games, and it's unbeatable imo. The power consumption is moot since an after-market HD7950 only uses about 145-157W. http://www.tomshardware.com/reviews/rad ... 207-9.html
With overclocking, you'll be at 190-200W with GTX680/HD7970 Ghz beating level of performance for $280. That's incredible value.
And HD7950 also wins in almost all GPU demanding titles against GTX660Ti:
- Arma II games
- Alan Wake
- Medal of Honor: Warfighter
- Crysis 1, Warhead, Crysis 2
- Metro 2033
- Witcher 2
- Battlefield 3
The only reason to get a GTX660Ti is if you must have PhysX or you need CUDA or want to SLI down the line. If you want an NV card, I'd spend a little more for the ~$320 GTX670 (after 10% off and rebate):http://www.newegg.com/Product/Product.a ... 6814127675