Out of curiosity, is there a chart anywhere on the power draw from Mac components since Macs never came with upgradeable power supplies? The reason I ask is that I feel I was pushing it with a Dual G4 1.6ghz cpu upgrade, a Geforce 6800GT video card, Voodoo 3 PCI card, and M-audio Revolution sound card in my Digital Audio. Are we limited at all when flashing video cards with power requirments for the ones that can be flashed if other upgrades are also installed?