Re: 6800gs question
The difference between the 6800 and the 6800GS is that the GS supports pixel shader 3 etc, I do believe, which is from the 7 series. It's a cheap solution to give you 7 series features without having to buy a 300 dollar card. Your processor wont bottle neck a single 6800GS, but you might not see as much gain as you could from having two. However, your processor would overclock nicely if you ever chose to. If you're going for a FX-57 though, I really recommend getting a single 7800GT... the performance gain for 100 bucks is amazing, the 7800GT is really a great card, without being 500 bucks like the GTX, and will be in par with the FX series chip..