Hi all, I have a late 2008 MBP 2.66GHz w/4GB ram. When I turn on the high performance mode, I notice that my CPU temp goes from around 73C to close to 85 or 90C and my fans start to kick it up a notch. Is this normal? I've Googled around a bit and can't find a true explanation as to why this might occur. My logic tells me that the CPU would be used less due to the GPU being turned on and utilized. Am I missing something? Thanks!