xeon turbo unlock

Hi,sorry that my english isnt veryy well, i have xeon e5 2696 v3 on huananzhi x99 tf. I trided all of internet Tutorial and turbo unlock driver and its akways 3.3ghz max turbo on stress or game but if i go to destop somtimes it reach 3.7 GHz and i dont know what to do i read about thermal...