44-47 is high, especially for a DirectCU card. 1920x1080 should only produce those kind of temps while gaming. It sounds like the GPU is not actually idling. Even if you OC to something like 950+mhz the card will still clock itself down to 450mhz for most everyday tasks, and especially if it's just idling. Check to see if the card is lowering its clock at idle. If not, I would install the most up to date drivers, as previous poster suggested, and try again. If the temps are still an issue I'd check to make sure the voltage is at stock as well. You might also want to adjust the fan profile from within the program you're using to OC the card, as most default profiles are very conservative.