So, I pretty much made up my mind that I'm going to use this 2009 Mac Pro as a "Windows-only" machine which will boot by default into Windows 7 x64 and use the upcoming 2010 Mac Pro only for OS X. Now, nVidias GTX 470 / 480 are due soon, and I was wondering if I can hook up one of those beasts to the 2009 Mac Pro - would that work ? It should need no EFI when its booting Windows only, right ? Also it looks like the 480 uses one 6 pin and one 8 pin power connector, could that be a problem like does the card draw too much power ? AFAIK the MP has only 2x 6 pin connectors. Is it even possible ? Are there cables that plug in with 6 pins at the logicboard but end with 8 pins for the GPU ? Can anyone shed some light on this ?