Where & what software did you use to get those temperatures from btw?
For that processor, it is pretty high. Maybe the HSF isn't seated properly over the core, as in slightly tilted to one side? I've actually had that happen to some of my previous sinks too, the "step" on the sink didn't quite fit over the socket, so it was tilted, giving me temperatures of over 70C. I dismantled it & adjusted the socket pin & the problem was solved.
It could also be thermal paste. Did you apply any in your system?
But again, it could just be faulty readouts, Asus probe for example are notorious for this sort of thing
. So if you haven't already done so, try out Motherboard Monitor, or maybe just goto your BIOS & confirm that the temperatures are accurate.