Hello. I just put my system together and below is a screenshot of my AiBooster and PC Probe II readings. I am not overclocking. Notice how the AiBooster shows lower external and total frequency than the core temp program. Which should I believe? Also, the core temp and PC Probe II programs show a big difference in cpu temp. It's interesting that the core temp porgram's cpu temp is equal to the PC Probe II's mobo temp.