Can someone explain to me if I can upgrade my PSU over 350W. I have contacted Compaq and they said the max I can upgrade it to is 350W. But while searching online for information, I read that the motherboard recieves the power it needs, not the complete 350W or whatever PSU you have. Its just used for additional hardware. I really want to know, because I want to get a decent video card that requires a PSU of 450W. I dont want to be wrong and have my motherboard short out or something. My motherboard is an A8AE-LE (AmberineM), and the videocard is an ati radeon x1600pro in case anyone wanted to know.