For some people, the bigger the better, but it’s better not to go too far… Look at this latest Keian 1200W power supply with 1400W “peaks” capabilities… Of course you’ll be able to directly feed 4 PCIe cards, your Quad Core CPU and other Quad SLI or CrossFire cards without any problems, or even power your USB ports when the computer is off. But if you have 4 PCs at home as any self-respecting geek, you’ll have to make sure you won’t blow the electricity in the entire neighborhood…