I have the AMD FX 8120 and I can get it to 4GHzish but my cooler is not being nice (I ordered a water cooling kit so I can overclock more). The thing is that at 4.2GHz I put it at 1.3V (actually a bit over that) but CPUz reads it as 1.4V and so what is happening? Also this happens with any voltage like 1.825V is 1.8V but this time the voltage is way off.