Too much juice is if you put too much voltage (around 1.5v I think? but that depends on your cooling) or if the temperatures are far too high, and the most important rule is don't get greedy and selfish, just because one guy can get 3.6ghz on his Core 2 Quad q6600, doesn't mean you can get the exact same thing, each chip is different, they each have their own VID making them unique