HI, I purchased a dell studio 540 which comes with a Bestec 350W(with 6pin)psu. I want to know if the new Radeon HD 5770 is enough to support it since i heard it only requires 108w at load. my cpu is q6600(no ocing) and only 1 HD. Some ppl say I need at least 500w others says i'm fine. I'm confused, i mean do I really need THAT much power? Also i heard that gpu companies overstate their requirements and Dell psu usually understand their powers.