yeah, it dropped my cpu temperature alone by about 6+ degrees or so, just from the reduced voltage, even with only 3 low speed case fans enabled, a 60mm case intake on the cpu, a 70mm case exhaust below the cpu, and an 80mm intake on the hdds, and its still kept cool during the day, and comparetively frozen at night, lol (this is at idle of course, 100% load only goes up about 5 degrees from idle though, because the voltage doesnt vary from its already low setting)