80+ gold is a standard, you have none, than 80+>80+bronze>80+gold>80>platinum>80 titanium, higher the standard better the PSU. For 100 bucks you get good quality 80+gold 500-600w. Look for EVGA G2 Supernova 550-650w, Corsair RMx, RMi, RM, thermaltake gold london, paris, berlin, Chieftec navitas GPM series, Cooler master V-Series.