CPUTIN Heat problem

Hi I've got a problem, even I play on standard clocks, my CPUTIN runs on 67°C/152°F.
Sometimes it reaches even 70°+. I looked on the internet and seen that's the socket on the mainboard.
Is this temperature okay or too high?
Sometimes it restarts in games, if it get's too hot. Mostly it happens in "Unturned".
After an hour the PC reboots. My RAM runs on standard clocks and the Mainboard supports the clock of the RAM.
Anyone knows how to change it?
The PC case is opened. (\s/)