AMD CBS.

Settings of importance here are Core Performance Boost. This will set your clock speed to the number entered in the BIOS without a boost. If you leave this one, it will result in instability due to the chip trying to boost higher frequency, when running at the highest frequency this will result in crashes. And a Global C-State Control should also be disabled since this function is for power savings and would try to downclock your CPU and down volt VDDCR CPU voltage.