Benchmark Results: 3DMark 11
Right out of the gate, we’re led to believe that the GeForce GTX 670 is marginally faster than AMD’s flagship Radeon HD 7970, with the GeForce GTX 680 a little more than nine percent quicker than the 670.
Take into consideration the fact that GeForce GTX 670 is $100 less expensive than the 680, which is faster, and $80 less than the Radeon HD 7970, which appears slower. This could be a massively popular card, should Nvidia overcome the manufacturing issues that have so obviously impacted its ability to deliver ample supply of 28 nm GPUs.
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.