The best bang for buck card at the moment is Sapphires X800GTO2. I have one my self. You only want it though if you are going to OC and unlock it. As standered it is as good as a normal X800GTO but the GTO2's are build using the same core as the X850XTPE which costs twice as much.
. So basically the X800GTO2 is a X850XTPE repackaged and repriced. But the GTO2 has been downclocked and had 4 pixel pipelines disabled. So all you have to do is change the bios on the card (very very easy) to the X850XTPE bios and change the clock speed to the X850XTPE speeds (and ferther) and you have a X850XTPE. You need to get a different cooler for the GTO2 as the one which is already on it is not a dual slot cooler (a big one used on the X850XTPE) so you just have to fit a good one (deffinatly the best is Arctic Cools ATI Silencer 5). It is better than the 6800GS by quite a long shot. The GTO2 costs around £120 new which is $200. If you want better performence for less get the GTO2
. Works perfectly in mine. Runs everything full detail. But obviously you have to OC and unlock it if you are going to get one. If you still want the 6800GS (cause you don't wanna OC) then its really easy to change drivers. Just uninstall the ATI ones and delete the registrys. Then install the nivida ones. Hey presto
. But i would seriously check the GTO2 out before you buy the 6800GS. Heres a link
. Oh and by the way the latest shipment of GTO2's have had 16 pipelines as defult so no need to change the bios
Seems that Sapphire have left the X800 and X850 series to die