i just ordered a X800 Pro AGP card and a new 400W PSU with 20 amps on the 12+V rail (this one http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=374000 ) .... but the card is going to get here 2 days before the PSU, a tech at ATI's 800 line told me my PSU may be fine running the X800 Pro even though it is a generic 420W with 13amps on the 12+V rail, he said since i only have one hard drive and one optical drive it may work no problem .. so i would like to try that first and just hang on to my new PSU as a backup .. but what are the dangers if it DOESNT have enough power for the card? can it possibly damage the card? or other components in my system?