I just got my 6850 yesterday, and I have to say it's a pretty nice card. It looks like it's around the 460 1GB (I think the 460 is a little faster, someone correct me if I'm wrong) but I believe it's better than the 460 768mb. So, it's really up to you, I would guess that you'll get fairly similar results with either card (the 460 would probably do a little better, but it's not insanely faster than the 6850). Another thing is, you only need 1 6-pin cord for the 6850, while the 460 needs two. And, you could consider a 6870, it's only a little bit more than a 6850 and is more powerful.