The GO version can in theory be overclocked at lower voltages. Considering this idea, you should be able to overclock much higher at lower overall voltages. I think in reality if you shoot for low overclock 3.2-3.6Ghz you can overclock at lower voltages with the GO. However, anything over 3.6Ghz and the voltages for 4Ghz requires similar voltages on the GO processor as well as the other version.