well i got a 6800gt and can't OC it that high, could my PSU be holding the OC back? i have an antec true330w. i was wondering what i should be looking for in a new psu for the video card. should i be looking for higher 12V+ amperage? or am i on the wrong track? i was thinking of the true550w, and is the true control model worth it? i don't have an empty 5.25" bay empty for the control panel, will it be a problem? thanks for any help, opinions, recommendations, and info