I just received a new XFX Radeon HD 5750 Card which came with power a connection cable (Molex to 6 pin) I also have a new ASUS MB with a power connection 8 pin. which I pluged into the MB (EATX12V). I think that this powers all the connector slots on my MB I do not want to use the mokex to 6 pin to power the new video card just in case it will receive two sources of power, if I understand right, could someone please advise me, thank you