where you guys dig up these power supplies.
Get a reliable power supply.
One of these will provide a comfortable degree of self-assurance:
http://www.newegg.com/Product/Produc...82E16817703005
http://www.newegg.com/Product/Produc...82E16817139005
and unless you have abit of experience and a lot of patience, leave nVidia chipsets alone.