take that 1.42v and start working it downward by testing and saving. you know it works at that crazy high voltage. start by lowering it to 1.32v and see if it will handle a serious stress test. drtoast is absolutely correct, turn off auto voltage to do all of you work. when you get your lowest stable voltage, you can work other voltages on the chip, like your cache voltage. be careful if your lowest stable voltage is over 1.3, you may want to rethink your 4.6 overclock. I personally want lower voltage, due to temps and longevity. the 4790k is very fast, a few tenths of a ghz isn't going to make or brake my ability to run software, so I'm not sweating it. btw, I didn't get the best or the worst chip, it's somewhere in the middle and there's not much more to say.