Re: A way to find how much power your computer needs?
Yes, but more important than that, is that the PSU outputs stable voltages. I reckon that brand name is more imporant than watts. An OCZ ModStream PSU should be fine for most rigs.
Windows XP Pro 17" LCD Monitor (1280 x 1024)
nForce3 250 Chipset Athlon 64 2800+ w/ C'n'Q
1 x 512MB DDR400 CL3 SDRAM 40GB IDE 7,200rpm HDD (8MB Cache)
nVidia GeForce MX420 64MB PCI On-Board Audio