Discussion CPU Temperature Issues i9 11900K

[steveoelliott]

Hi Folks,

I'm troubleshooting high CPU temperature with a stock i9 11900K (not overclocked) on an ASRock z590 motherboard. When using OCCT and running Linpack 2021, I hit some pretty extreme temperatures until the CPU throttles back. Sometimes, it doesn’t do it in time and the machine shuts down (turns off) with no logs. I suspect that this may be a thermal issue with the CPU.

The CPU core temperature according to HWInfo quickly reaches 115 degrees C before the PC shuts down. On some occasions the thermal throttling cuts in and temperatures then stabilize around 80 degrees. In normal operation the PC is stable and CPU temps are between 70-90 degrees. However, when stress testing I do hit these high temperatures which is concerning.

The cooler installed is a BE QUIET PURE ROCK 2. I think a better cooler might be in order.

Thanks in advance...

 

[drivinfast247]

A bigger, better cooler is in order.

Make sure current cooler is installed properly. Does it have thermal paste?

What case do you have? What fans? How are they oriented in the case?

 

[jnxzi94]

That cooler you have installed isn't even nearly good enough for i9...

 

[steveoelliott]

Thanks folks... I thought as much.

This was purchased as a pre-built system. I understand that no thermal paste was used as there is some already on the base of the cooler.

There are two chassis fans (one front and one rear) and generally good air flow. I have real issues with GPU temp on a 3080.

 

[Zerk2012]

Hi Folks,

I'm troubleshooting high CPU temperature with a stock i9 11900K (not overclocked) on an ASRock z590 motherboard. When using OCCT and running Linpack 2021, I hit some pretty extreme temperatures until the CPU throttles back. Sometimes, it doesn’t do it in time and the machine shuts down (turns off) with no logs. I suspect that this may be a thermal issue with the CPU.

The CPU core temperature according to HWInfo quickly reaches 115 degrees C before the PC shuts down. On some occasions the thermal throttling cuts in and temperatures then stabilize around 80 degrees. In normal operation the PC is stable and CPU temps are between 70-90 degrees. However, when stress testing I do hit these high temperatures which is concerning.

The cooler installed is a BE QUIET PURE ROCK 2. I think a better cooler might be in order.

Thanks in advance...

You need the top of the line air cooler for that processor or switch to a high end AIO cooler.

 

[geofelt]

A single tower cooler with a 120mm fan like the drp2 is adequate, up to a point.
In your case, temps are ok with YOUR workload.
But, to get the most out of your processor, you need better cooling.
The turbo limits go up if you can keep things under 70c.

What is the make/model of your case?
The height available for a good air cooler usually needs to be 160mm.

If you favor Dark rock coolers, look at the DRP4 with twin towers and fans:
https://www.bequiet.com/en/cpucooler/1378
It needs 163mm.
Your current cooler is 155mm high.

On some coolers, high ram heat spreaders can intrude.

For them, look at the noctua NH-D15S at 160mm:
https://noctua.at/en/nh-d15s/specification

 

[steveoelliott]

Thanks... I have this case: Be Quiet Pure Base 600 - Midi-Tower

 

[geofelt]

Thanks... I have this case: Be Quiet Pure Base 600 - Midi-Tower

Your case supports coolers up to 165mm.
You are good.

 

[steveoelliott]

Excellent. So what would be the absolute best cooler to go for sticking with air cooled.

 

[geofelt]

Excellent. So what would be the absolute best cooler to go for sticking with air cooled.

Noctua
Noctua makes very good air coolers.
They maintain a suitability list, here is the one for the i9-11900k:
https://ncc.noctua.at/cpus/model/Intel-Core-i9-11900K-1288

The very strongest would be the NH-D15 with a NSPR performance rating of 183.
Here is what NSPR means:
https://noctua.at/en/noctua-standardised-performance-rating

You have all the height you need(165mm) for any cooler.
The potential issue with the NH-D15 is possible interference if your ram has tall heat spreaders.
You would be limited to 32mm low profile ram unless you used only one fan:
https://noctua.at/en/nh-d15/specification

There are two other options with a NSPR of 169 or 167 respectively.
NH-U12A:
https://noctua.at/en/nh-u12a-chromax-black
or NH-D15s:
https://noctua.at/en/nh-d15s/specification

 

[Karadjgne]

When using OCCT and running Linpack 2021

Occt uses linpack. Linpack 2021 uses linpack. Linpack basically makes the cpu run like it's at 130% heat output.

The cooler installed is a BE QUIET PURE ROCK 2.

140w cooler on a cpu that can hit 250w for 56 seconds straight according to Intel recommendations, or upto 99999 seconds if the motherboard vendor is pushing performance and ignoring Intel recommended power limits.

Linpack + 11900k at 130% heat output = well over the 140w (ish) limits of that cooler. You'd need a decent 360mm AIO at a minimum to keep that wattage in check.