Intel i5 3570k overclocked to 3.7GHz
Asrock Z77 Extreme4 Motherboard
Corsair H60 Closed Loop Liquid Cooler
Two Corsair SP120 fans on the radiator in push-pull configuration
Recently I've noticed that my CPU temperature is fluctuating quite rapidly, and I'm not sure why. When I first boot my PC the idle temperature sits at around 31c and seems stable. However, the moment I start running any application the temperature suddenly goes in a pattern like this, changing every second or so: 32c, 35c, 38c, 35c, 33c, 40c, 45c, 35c, etc.
Is it normal for temperatures to change this rapidly? My GPU isn't like this at all, it goes up and down by 1 degrees every few seconds, never skipping up or down by 10c like my CPU does. I also just opened up my case and re-applied new thermal paste and cleaned up the dust in the radiator, but the problem is still there. I also noticed when downloading a game off Origin the temperature hit 50c...
Any help would be great, perhaps I should try lowering the overclock to see what happens. Although I've had 3.7GHz stable for about a year now.