I am a first time builder. Just built using phenom2 X3 720BE and a gigabyte GA-MA790XT-UD4P AM3 motherboard. Arctic cooling 7 pro. All going well so tried overclocking after reading these helpful forums. Overclocked to 3.4 using x17 multiplier and stress testing with OCCT software as recommended in this forum somewhere. This software tells me idle temperature is around 26 degrees but going into bios settings tells me cpu temperature is 39 degrees. If someone can explain these differences to me that would be great. Thanks for any advice.