This issue came up under another thread but since it is a more general issue, I'll bring it up separately here. Under bootcamp, running Crossfire (both GPU's at the same time) with some load, the Mac Pro fan speed goes up and the Mac Pro runs hotter. Is there any issue running like this for a period of time? I can imagine the same thing happens if you run something like Final Cut Pro with both GPU's being utilized. I just received my nMP last week so I am unfamiliar with it's behavior.