[SOLVED] CPU idle temp bouncing

[catty]

Hey Guys, I need some help with my CPU temp.

When checking it on idle, I notice a substantial bounce of temperature on my HW monitor. It bounces between 30 and 54 degrees constantly on idle. When running Real Bench it seems to stop bouncing and stay around the 63 degrees.

I have a I7 8700K CPU, with a Corsair H150I pro cooler.

I have already re-applied thermal paste but it didn't seem to make a difference. I have also made sure the cooler was tightened.

So is this a worrying thing or is this normal ? And if not could you let me know of any suggestions of what the problem is and what I could do to fix it ?

** the reason I have started to look at this was because I was oc the cpu and when around 5GH and around 1.3V it was going up to 100 degrees.**

 

[CountMike]

Hey Guys, I need some help with my CPU temp.

When checking it on idle, I notice a substantial bounce of temperature on my HW monitor. It bounces between 30 and 54 degrees constantly on idle. When running Real Bench it seems to stop bouncing and stay around the 63 degrees.

I have a I7 8700K CPU, with a Corsair H150I pro cooler.

I have already re-applied thermal paste but it didn't seem to make a difference. I have also made sure the cooler was tightened.

So is this a worrying thing or is this normal ? And if not could you let me know of any suggestions of what the problem is and what I could do to fix it ?

** the reason I have started to look at this was because I was oc the cpu and when around 5GH and around 1.3V it was going up to 100 degrees.**

It's quite normal for modern multicore processors when left on auto. Cores lower frequency or some even go to sleep mode and when OS places a demand on one or more cores they speed up which produces more heat. Run Task manager ad you will see what's going on in the background.

 

[iq7]

Hey Guys, I need some help with my CPU temp.

When checking it on idle, I notice a substantial bounce of temperature on my HW monitor. It bounces between 30 and 54 degrees constantly on idle. When running Real Bench it seems to stop bouncing and stay around the 63 degrees.

I have a I7 8700K CPU, with a Corsair H150I pro cooler.

I have already re-applied thermal paste but it didn't seem to make a difference. I have also made sure the cooler was tightened.

So is this a worrying thing or is this normal ? And if not could you let me know of any suggestions of what the problem is and what I could do to fix it ?

** the reason I have started to look at this was because I was oc the cpu and when around 5GH and around 1.3V it was going up to 100 degrees.**

what exactly motherboard and power supply do you have ?
did you notice this problem after play a game or something?

 

[madchemist83]

Is there big difference between core temps. What's your case ? How is the radiator positioned?

 

[mdd1963]

CPU's bouncing around in clock speed and temps (several times per second) has been normal operation for many years. (Naturally, the temps at 800-1000 MHz with .7V core voltage are lower than those at 4.8 GHz with 1.26V core voltage)