"Phil" wrote in message
oups.com
I am about to buy a geforce 8800GTS 320MB card. It says minimum
requirements for the card is 400W and 12V rated at 26A. My power
supply is 400 watts but only rated for 12V at 18A. You think I could
pull that off or should I buy a new PSU?

It depends. If your PSU only has a single 18A rail then you'll probably not
get away with it (the 8800GTS will draw peak about 11A, the CPU around 10A,
a HD 1A, etc). If you have at least 2 12v rails of 18A nominal capacity you
should be ok if you run the card off one and the system off the other.