GTX470. I mostly game at 1680x1050, but for the odd title (mainly racing games or just anything that works well with a pad), I'll play on my 32" TV at 1920x1080. There's basically no fps difference between the two resolutions (in fact, I swear yesterday I was actually getting more fps in GTA IV...), so I reckon I'm being bottlenecked by my under-clocked CPU (which isn't really a shocker I guess).