Benchmark Results: Metro 2033 (DX 11)
Although the Kepler-based cards are competitive with adaptive anti-aliasing enabled in Metro 2033, AMD’s Radeon HD 7970 retains more of its performance once 4x MSAA is turned on.
Once again, the difference between GeForce GTX 680, GeForce GTX 670, and Radeon HD 7970 isn’t significant enough to step up to a higher resolution or add a more demanding graphics quality setting, though. So, we’re left to consider price. From $400 for a GTX 670, $480 for an HD 7970, or $500 for a GTX 680, the least-expensive GTX 670 makes the most sense.
Though there isn't really a performance hit but it would be great to have seen the GTX 670 running at PCIe 3.0.
Nvidia has had a big lead in Dirt 3 and WoW for a very long time. This skews the results.
The GTX 670 is a fantastic card, don't get me wrong. Just pointing out that it's being slightly overrated here.