CPU usage drops

kosamchetoo

Reputable
Feb 6, 2016
100
0
4,680
When I'm stress testing with RealBench my CPU goes from 100% to 1-10% for a few seconds. In that time RealBench stops and after 5 seconds usage goes again to 100 and the rendering continuous. It also happens when I'm gaming - the game freezes for about 5 seconds and then goes on. CPU temps have never got above 65C. May it be a bad CPU?
Specs:
Intel Core i7 6800K
Corsair H110i GT
Asus ROG STRIX X99 GAMING
Corsair Vengeance LPX 16GB (4x4GB) 3200Mhz
Samsung 850 EVO 500GB
Seagate Barracuda 3TB
Sapphire Radeon R9 270X (I know it sucks but that's what I currently have, gonna buy 1070 soon)
NZXT H440
EVGA SuperNOVA P2 850W