I haven't really seen any posts on X800 Crossfire setups, though I suppose not too many people really cared for it. I have an ASUS A8R-MVP and a PCIE X800XL and noticed that Newegg had the X800 256MB Crossfire Edition for $189 (refurbs for $150) so I thought I might try it out just for fun (waiting for next gen of cards and AMD chipset to really upgrade). I haven't really benchmarked it too thoroughly yet, but my first run of 3DMark05 was ~9500. With 1 card, I got 1786 on 3DMark06, and in Crossfire I got 3129. Too bad it doesn't have PS 3.0 since an N/A really brings down the score. This is with an Opteron 144 @ 2.79 GHz and 2GB RAM @ 200 MHz 2-3-3-6-1T. Running BF2 with everything on high with 4X AA @ 1920*1200 with 1 card was averaging ~20-30 FPS according to FRAPS. In Crossfire I was averaging ~40-50 FPS, though it was on a smaller map with only ~ 10 people playing. I haven't actually read of anyone using 1920*1200 with the X800 or X850 series in Crossfire, so I wanted to try it out myself and it seems to work. I will be playing with it some more on other games like FEAR, CS:S, HL2: Lost Coast when I have more time, hopefully this weekend.