Measuring motherboard components temperature can be tricky on it's own and is often full of errors. Reason for different results is in my 1st post, HWINFO i just a better, more reliable program compared to OHM. If you don't like it or want to have a second opinion via other program sadly only AIDA64 and cpuid's HWMonitor are reliably capable of that as far as I know, however they are both payed with cpuid's having trial time.