Ever since I got my new ATI RADEON HD 5970 my motherboard runs hotter. I have an asus p5n-e motherboard and I can't find any information anywhere about how hot is too hot for my north bridge. It runs at ~38C idle but now can get up to 55C under load and asus pc probe is set to set off an alarm at 45C. Also I have been having trouble with the HD 5970 (I think its a power supply issue) but I would like to rule out the motherboard overheating.