If you look at my post, in HWmonitor, the CPUTIN temp is the CPU "socket" temp which you can still see when you unlock it. Keep that under 55c and you are golden
I suppose the board you have affects how easily it's done or if it could be done at all. I have to believe the MSI's like mine use the same method for being able to display temps and shows it on the readout.
As stated, keep those temps down and you'll be OK. I personally don't like anything over 50C and do whatever is needed to keep it there or cooler. I do know based on the Phenom II chips I have, once they get around or above 55C, they tend to flake out (Get unstable) and that's why I prefer to keep them as cool as possible. I have ran them past the 55C mark before and noted in the past they would have this tendency esp if running a bench such as Super PI or WPrime with the cores under load, sometimes not completing the run, locking up, ect but if I can keep it around or below 50C, they do much better - You know what I mean.
Never settle for "This temp is good enough" - If you can make it better, do so and the hardware will thank you by giving you more of what you're looking for and last longer too.