In my previous attempt to join F@H, my cpu (C2D E6600@2.5Ghz) did almost 5-6 days about computing 1 Work-Unit.
Now my gpu (ATI Radeon HD 4870) does this job in about…. 9 hours 😈
Activity on my GPU is around 60-80%
Fan speed is around 40-50%
But I’ve recently put all my fans back into the case, so everything makes noise : 😉