Re: 300W with GF 6600
Just because NVIDIA recommends a 300 W PSU, doesn't mean should stop there.
Right after NV30 was released with a 350 W PSU requirement, I tested a new FX 5800 Ultra with PSUs rated 250, 300, 330, 380, 450, and 510 watts. 3DMark benchmark performance increased 10-16% at each 50W PSU increment until 480-to-510 Watts, where the benchmark improvement dropped to 6%.
No kidding, the same machine that benchmarked at just under 12K in 3DMark01 on a 250 W PSU could benchmark just over 17K with a 510 W PSU.
I used to drive a Heisenberg, but whenever I'd glance at the speedometer, I'd get lost.