On core temps you can see a list of your cores, in your case you have 6 cores. Out from them you can see some temps at each core. so actually your whole CPU is about 91C That's pretty high, you should get a new CPU-Cooler or some fans.
It's hard for your computer, if it can't pull some fresh air in, and some warm air out.
Like, if you're sitting in a warm room, your computer will pull the warm air in to the case and warm air out.Then it will allways be over room temps (But this wont happend if you have at least a great Cpu-Cooler or some super fans. Or you could just put you build inside of a fridge:3)
Note: 'Okay' temps for a cpu like the one you have, would be about 55-65C
Hope this was help enough:3