u need to get prime 95 and stress test it, it will put ur cpu at 100% then tell us how hot it is, also to get the correct voltage u need to stress test it, if it can get 10 hours on prime w/out any errors then u know its stable at that voltage, then try lowing ur voltage if its stable and stress agin or if its unstable and gets errors raise ur corevoltage and stress agin till u get it stable.