I picked one up a little while ago and it performs very well for me, though I only game at 1680x1050. It's PLENTY fast enough for that. I have one of the 1GB v2 GTX-460s, which use a lower memory bandwidth, but clock a LOT higher. If you OC it, you get pretty amazing performance...my benchmarks are pretty much in line with GTX 560s.
Overall, for pretty much any game at 1680x1050, you can run at pretty high graphics settings and get buttery smooth framerates. 1080p would probably also be just fine. Running multimonitor or a high-res screen, though, and you may need to start lowering settings in the newest games.
I don't game a lot, but MW3 on high settings is silky smooth.