Hi I got a XFX 4890 ZSFC card flashed using a rom found on macrumors, and running OSX and Windows7 via Boot Camp just fine. However, I have the impression that the 3dmark06 score is way lower than it should be. It's reaching 13000, usually around 12900. My specs are 2006 Mac Pro, Dual 2.66 Xenon Woodcrest, 8Gb RAM and a 4890 ZSFC 1Gb at stock speed (850Mhz IIRC). Could it be that the flashed rom somehow is nerfing performance? Or is this what should be expected?