A psu just went out on a friend's computer running a cheap Gigabyte computer, and I need to order a new PSU, but the standard has changed on me, and i need to know what is what? I could upgrade my psu and give him a very good Coolmaster 450W from my 2nd computer, but is an ABIT nf7-s ATX12V 2.01 compliant? What does that mean, anyway, ATX12V 2.01 compliant?