yes, temp sensors are not accurate on this board. NB and SB report about 1-2 off HEATSINK temps, not chipset temps(measured with IR sensor, as you are, for heatsink temps, matched reported temps, obviosly chip is hotter than heatsink.). Reported cpu temps have changed drastically across bios revisions...so who knows what's real or not...Coretemp at least reports the same temps across many board for the same cpu, at least for me.