My cpu is hitting 50ish degrees when idle

Logick · Sep 7, 2017

Hello lately my CPU has been hitting 50c at idle. I'm not sure why.
I reseated the cooler and added new thermal paste. I replaced the stock fans on my cooler. I am currently getting new chassis fans also. I set my bios to default settings. There's been a heatwave in my area lately, but today has been cool and its still happening. Any ideas would be appreciated. For the record I usually control my CPU fan with Corsair Link 4(at quiet unless I game) and chassis fans with Asus Fan Xpert at quiet also. My CPU fans react to the H11i's temp not the cpu's and its hitting 40c alot.

Thank you.

CPU: i7-6850k
Mobo: ASUS ROG STRIX X99
RAM: 32 GB Corsair Vengeance 2666hz
Video: MSI Gaming GTX 1080
Cooler: Corsair H115i w/ 2x Notcua NF-A14
Paste: Noctua NT-H1
Case: Corsair Carbide Air (stock chassis fans, replacing them with 1x Noctua NT-A14 3x NF-S12B)

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GhislainG · Sep 8, 2017

Does it get to 100°C at full load? It possibly is a pump failure which is a rather common issue with liquid coolers.

Logick · Sep 9, 2017

GhislainG :

Too scared to take the risk. I reseated the cooler on the cpu again and it began to run 36ish again. But earlier I replaced my chassis fans with noctua ones and it appears I'm hitting 42 when idle now.

GhislainG · Sep 9, 2017

Then the cooler probably wasn't installed correctly or too much thermal paste was applied. Your CPU will hit 100°C and throttle if the pump fails, but it will survive.

Logick · Sep 9, 2017

GhislainG :

It seems to be properly installed. How would I know for sure?

GhislainG · Sep 9, 2017

It's installed correctly if your full load temperatures are fine, but you're scared to stress test the CPU.

Logick · Sep 9, 2017

GhislainG :

What would be ideal temps? mid to late 30's? I'm ready to reapply the paste, my main concern is how tight to screw in the cooler on the cpu.

This is my current temps right now PC just started

GhislainG · Sep 9, 2017

The CPU is doing what? Idle temps are not important, but full load temps are. If you're scared to use the latest version of Prime95, then start with version 26.6. Temperatures should be below 80°C because unlike newer versions, it doesn't use the latest AVX instructions.

Logick · Sep 9, 2017

That's it idling. Just started. I'm going to reapply the thermal paste and see what happens.

GhislainG · Sep 9, 2017

Does Intel XTU report the same temperatures?

Logick · Sep 9, 2017

GhislainG :

I'm now smelling something, going to reseat and readd paste.

GhislainG · Sep 9, 2017

You can enable more hardware monitors to see core temperatures, etc. Just click the icon at the top right of that pane.

Logick · Sep 11, 2017

added new paste, no improvements

agello24 · Sep 11, 2017

im going with pump failure. its not moving enough water through the system.

Logick · Sep 11, 2017

How can I test that?

agello24 · Sep 11, 2017

you really cant. cause the system is sealed. i see you droped it to 4ghz. looking at the photos. i would rma the unit if you can. thats just my opinion.

Logick · Sep 11, 2017

Just filed an RMA ticket, lets see!

Logick · Sep 14, 2017

agello24 :

Got the replacement, put it in and here are the results

goldstone77 · Sep 14, 2017

You can test it like you test most mechanical devices. Tap on it with the screw driver and monitor the heat levels. If it's starting to stick you could get it unstuck temporarily by jarring it loose.

agello24 · Sep 14, 2017

so it was the pump? they replaced the entire unit?

Logick :

Logick · Sep 14, 2017

agello24 :

Yep still under warranty, they shipped me a new one, sending back the old one this weekend.

Hitting 34-36c on idle, cooler is not hitting above 34c.

My cpu is hitting 50ish degrees when idle

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