UPDATE 4/6/06: In dual-card testing, we initially reported that NVIDIA's GeForce SLI solution delivered better performance than CrossFire, however ATI's Terry Makedon informed us that Oblvivion can be forced to run the X1900 XTX and X1800 XT cards in CrossFire mode by renaming the oblivion.exe executable to "AFR-FriendlyD3D.exe". After making this change, we saw a dramatic boost in performance and now the Radeon cards scale appropriately, with the X1900 XTX CrossFire outrunning the GeForce 7900 GTX SLI in all tests except our indoors area. All isn't perfect with this workarond however, as occasionally we'd notice flashing textures on the screen regardless of which area of the game we were testing. The textures would flash randomly: during one run in the foliage section everything may go perfectly, and then the next may be filled with flashing textures, so we'd still definitely give NVIDIA the nod when it comes to multi-GPU compatibility with Oblivion. We sent ATI a video demonstrating the problem and other info on the issue, so hopefully it can be resolved in a future Catalyst release.
