hey everyone, I just installed a BFG GTX 260 maxcore OC2 in my mac pro. The 260 is working great under windows, and the fan is NOT running at full tilt under OS X- at least, I can't hear any noise at all from the card with the case open and OS X booted. I used an ATI power cable with a PCI-e y adapter to power the 260, and the original power cable for the 8800 since I've already got 2 optical drives. Getting about 2x the FPS in fallout 3 with the 260 compared to the old 8800gt. i am a happy camper and just wanted to share. Now i really hope the rumors of generic windows GPU support under snow leopard come true . . . .