OCCT is a lot more user friendly, will definately get this later. If it's stable in this i trust it. Prime is way over the top, why don't i just throw parafin in my case and a few matches, same thing.
Oh and to the above poster worried aobut temperatures between cores:
Core 0 idle: 33C
Core 2 idle: 22C
I usually have between 10-12C difference, but you gotta go off the hottest core, it's extremely annoying.