I'm going to be placing an order for a PowerMac next week and the only thing I need to decide on is the graphics card. I did some searching on here and found comparisons with the XP v an 6800 Ultra, but none with the XT v a 6800 GT. On the PC side, i know OpenGL is nVIdia's bread and butter, while DirectX is ATI's. Since we are dealing with Macs here, there is no such thing as DirectX for Macs so that aspect is thrown out. I've looked at the benchmarks from barefeats.com and spec wise, the X850XT has the 6800GT beat by quite a margin. The actual real world tests reflect that advantage. So +1 for the XT. I'm looking for others opinions on this. It seems the XT wins hands down. What do you think?