The EVGA SuperNOVA 1000 G1 1000W power supply is 80 Plus Gold rated, offering up to 90% efficiency of using the power. The SuperNOVA 1000 G1 uses a cooling system with a variable speed 135mm double ball bearing fan to keep fan noise to a minimum, while keeping the PSU cool. The main features of the 1000 G2 is the single 12 volt rail capable of pushing 83.3A of power."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips