I see you guys talking about Power supplies and temperatures a lot!! There is a Free program on the net Called "Everest" .. I use the Free one!!! It is Great will flying if you are worried about heat and you want to know what that PC is doing. It gives Temperatures in real time ... for instance my 3 temps, CPU, motherboard, and HD run at 42C,44C and 42C will not flying. Once I start the temps rise about 20 degrees on the CPU .... this program can let you know what to add for improvement ... give it a try Google "Everest Home Edition"
