Found this note on another forum from the actual person who updates Prime95.

Link >> http://hardforum.com/showthread.php?p=1040197621I have a new version of prime95 for Haswell processors for you to try. It uses Haswell's new fused-multiply-add instructions for a little more CPU stress.
On my system running the small FFT torture test, the new version is about 8C hotter (sorry about that!) than the last version. For me, I had to reduce my overclock by 100MHz to achieve stability with the new version.
