My desktop floats on an average Intel C2D E6550@2.33Ghz,Gigabyte 965P-S3,2gigs DDR2@667Mhz, NVidia GeForce 8500GT-512MB; all running at clock speed and with CIA2(CPU Intelligent Accelerator) Disabled. On top of this I run vista x64. My usual Northbridge temperature (as measured using external device) is about 50*C (112* F) - this is while doing normal work and development. But the strange thing happens when i start playing Crysis - while my processor tends to get worked out (and the temperature rises), i notice that the Northbridge temperature drops to 40*C(104F).Initially i dismissed this as an error, but after trying out Crysis 4 times, I can confirm that this is happening. I'd like to know if this has happened to anyone else?

Update: Tested the theory on Quake 4 as well, the results are surprisingly similar.