Gainward GeForce GTX 670 Phantom Review
 

After many months of talking up its latest architecture, Nvidia reclaimed the single-GPU performance crown with its GeForce GTX 680, which outpaced the Radeon HD 7970 by about 7% in our tests. Kepler's arrival forced AMD to slash prices across its Southern Islands lineup, including a $70 drop on the HD 7970, putting it at $479 or about 4% cheaper than the GTX 680's MSRP of $499.

The HD 7950 also took a $60 cut to $399, making it one of the most tempting 7000 series cards because it has no equal -- or had no equal, we should say. Continuing Kepler's rollout, Nvidia has unveiled the GTX 670, which is priced against the HD 7950 at $399. Despite being $100 cheaper than the GTX 680, the GTX 670 doesn't appear to be much slower on paper, and that could spell disaster for AMD.

http://www.techspot.com/review/529-geforce-gtx-670/