Actually if your system is reporting high temperature, you will need to check for motherboard manufacturer.
It can be due to any of these:
a) bad integration
b) PSU not ATXv2.2
c) Chassis is not TAC (Thermally Advantage Chassis)
d) BIOS Issues.
Make sure that you are reading the temperature from the BIOS itself.
Steps to try:
Re-integrate the cpu with new clean thermal paste.
Update the BIOS of the board.
If not, fixed, try the system out of the chassis as a test.
Make sure that you have a good PSU as well.
Check with board manufacturer if there is any fix from their side.
Note: the cpu can go up to 71.4C (you can add 5 more degrees to it)
70 degrees... but in some site like ThomsHardware.com. it says some intel Quad have reach 100degrees during game plays for the 7i core wihch max is lower then mine for the thermal temperture..
As long as it is not going over 76 C, i will say that it is operating within the required range. Other than this, i dont have any suggestions as i gave all tips what to do if your system overheats.
All the best,