Originally Posted by Razorfinger
Is a 300W power supply good enough to run a 6600 AGP with 256MB?
Go to the card manufacturer's site, and check their "Minimum System Requirements" for that particular card. A quick check on BFG says 300W is adequate, but the 256MB/AGP version might be different.
It's a lower-end card, so it would really surprise me if the power supply requirement was much higher than 300W.