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Low CPU clockspeed at low temps

I-Salt
By I-Salt
in CPUs, Motherboards, and Memory
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My cpu (i5 11400) had temperature problems with the stock cooler and it caused it to throttle so I bought cooler master's hyper 212 spectrum v2.

With the stock cooler I used the software called heavyload to stress test it and after less than a minute the cpu reached 79 degrees and the clock speed 3.8 Ghz and it stayed like that.

With the new cooler after the same duration it reached 59 degrees but the clock speed was also 3.8 and it lowered even more to 3.3.

 

Specs:

i5 11400

B560M aorus pro motherboard

32GB ddr4 3200mhz ram

Rtx 3060 Gigabyte gaming oc

Antec atom 650W power supply

 

I am running the default bios setting at the moment. Are there options that need tweaking?

IMG_20231208_162312.jpg

IMG_20231208_162324.jpg

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It could be power limited. Go to turbo power limits on the second screenshot and set p1 and p2 limit really high like 500 watts

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Replacing the cooler wasn't needed. 79 degree in a stress test is perfectly normal.

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I'm a PhD student working in the fields of reinforcement learning and traffic control. PCs are one of my hobbies and I've built many PCs and performed upgrades on a few laptops (for myself, friends and family). My personal computers include 3 windows (10/11) machines and a TrueNAS server (and I'm looking to move to dual booting Linux Mint on my main machine in future). While I believe I have an decent amount of experience in spec’ing, building and troubleshooting computers, keep in mind I'm not an expert or a professional and I make mistakes.

 

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Yes a CPU will only start throttling at around 90+C.
So that was not an issue from what we can see.

Also the cooler is only a marginal upgrade, the biggest benefit is the direction of airflow is a lot better for most cases.
But should surely be more then enough for that CPU.

Also note; rest of the case design matters (as in how fans and vents are setup and such), if there is no fresh air it will never be able to cool well. 😉
Should be common knowledge but not everyone know this.

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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1 hour ago, Sjaakie said:

It could be power limited. Go to turbo power limits on the second screenshot and set p1 and p2 limit really high like 500 watts

Tried it and after a minute it went down to 3.9 Ghz and after another minute 3.5 at 55 and 51 degrees respectively

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1 hour ago, will0hlep said:

Replacing the cooler wasn't needed. 79 degree in a stress test is perfectly normal.

The stock was noisy anyways. But I was hoping that the new cooler would solve the clock speed issue.

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1 hour ago, I-Salt said:

Tried it and after a minute it went down to 3.9 Ghz and after another minute 3.5 at 55 and 51 degrees respectively

Did you check on the VRM temps, by any chance? It could be that they are getting too hot, although that seems really unlikely with those heat sinks and the power draw of an 11400.
Also, does your CPU start consuming less power the longer you run the benchmark? That could be another hint at high VRM temps, at least from what I know.

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Sure would be neat if there was something useful here, eh?

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4 hours ago, I-Salt said:

after a minute it went down to 3.9 GHz

Try running ThrottleStop 9.6

https://www.techpowerup.com/download/techpowerup-throttlestop/

 

Post screenshots of the main window, the FIVR and TPL windows. Also post a screenshot of the Limit Reasons window while your CPU is throttling. Intel CPUs can throttle for a variety of reasons. No point in guessing what is happening. The CPU keeps track of and can report the reason why it is throttling. Turn on the Log File option in ThrottleStop so it can record your CPU performance and throttling reasons while you are stress testing. Exit ThrottleStop when done testing so it can finalize the log file. This file will be in your ThrottleStop / Logs folder. 

 

Some B560 boards do not let you set the turbo power limits to the max in the BIOS when you have a non K series CPU. They might have an option in the BIOS for this purpose but it does not actually do anything. Voltage regulator throttling is also a possibility. 

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I don't know what happened but it is stable now.

I did a windows restart and it just stayed on a black screen for like 5 minutes and didn't post so I forced it to shutdown by holding the power button and then turned it back on. I did the stress test again using the same program and it stayed on 4.2 Ghz for the whole durarion.

If there's any more changes I will update.

Thank you all for the help.

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