intelburn test temp flucuation

[r3v07ut10n]

After installing my new cooling loop this week i decided to crank up the volts and run 5Ghz. Unfortunately my chip isnt great, i can hold 5ghz stable @ 1.52V just at the limit for *safe* :P

So my question is this, when i run IBT on very high, the temps fluctuate alot. anywhere from 60-78C most of the time being in the low 60's. Is this just air on the loop circulating or is it the damn program?

It had me worried for a bit, when i fold at 5ghz its constant 62-64C.