Originally Posted by
unclewebb
You will need to contact Intel about the crappy sensors they are using on these new CPUs. The sensors on the original Core i7 CPUs were excellent. Not a single significant issue.
The sensors on these new 32nm chips are not the same. They have multiple issues so once again, like many CPUs that came before the original 45nm Core i7, getting accurate temperatures out of these things is pretty much impossible. Intel does not fully document any of their sensors and they don't recommend that you use them for accurate core temperature reporting. All RealTemp can do is report the bad data coming from these sensors.
I had a theory a while ago that Intel deliberately offsets TJMax slightly from one core to the next to better control the timing of thermal throttling. There seem to be some major TJMax differences in these CPUs but nothing like this is documented so all I can do is guess.
Don't use these sensors to compare your temps to other users. They are only sort of useful to compare your core temperatures from one day to the next on the same CPU. Previous sensors tend to be consistent from day to day so if you change your setup and the temperature drops on core 0 while running Prime95 Small FFTs compared to the day before then the change you made was an improvement. Beyond that, it's mostly random data with too much error and not enough documentation. :(