Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Right-as the GPU heats up, the CPU core temp goes up! What's up with that? SMC Fan Control AND iStat Pro both report a 20 degree increase in CPU temp when the GPU is in use. If it were just getting hotter under the GPU I'd dismiss it

They share a heatsink?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.