Question (SOLVED) 13600KF throttles under full load in the first 20 seconds, then good temps (with AIO)

[burgerwithcheese]

Hello guys, i'm stuggling to find an answer while searching on this forum, so I deciced to post the question here. UPDATE: I have found simular posts with spikes but they lasted only +/- 2 seconds.

I have completed my new PC build witht the 13600KF intel processor. I am cooling the chip with the Cooler Master ML240L RGB v2 water cooler, and my temps on idle are very good (37C).

The problem:
When I am stresstesting the chip on full load, the first 20 seconds are very very hot. (100C with termal trottling). After that (while still under full load) my temps go down instantly to a very nice temp again for this chip (74C max under full load). I have tested Cinebench R23 multiple times with a 10 minute test each. Always the same result.

My question:
Is it normal to have termal trottling for only the first seconds? Does the watercooler need 20 seconds to adjust to the instantly full loading chip? I dont know if those spikes are harmfull to my system. Maybe the sensors have a latency and the cooler is already cooling better then the software shows? Do you guys have simular results?

My waterpump fans are set to always full speed in the bios and are connected to the WP header.
My other fans (push and pull) are set to performance and are connected via a hub to a different fan header.

The programs used for benchmarking / stresstesting are:

First 5 seconds trottling under full load, then normal temps: Blender Render
First 20 seconds trottling under full load, then normal temps DAZ STUDIO NVIDEA IRAY (full 4K render)
First 10 seconds trottling under full load, then normal temps Cinebench R23

Note: in games like PUBG on ultra settings 1080P, there are no spikes because there was no full load.

SEE IMAGES:

MY IDLE TEMPS:

MY FIRST 20 SECONDS FULL LOAD TEMPS:

FULL LOAD TEMPS AFTER SETTLED

MY PC SPECS:
Asrock B760 PRO RS
13600KF
AIO: Cooler Master 240L RGB v2
Corsair Dominators 2 x 8 GB 4000MHZ
ASUS 3060 TI OC
Corsair sp120 elite fans (also used for the water cooler)

Thank you for replying in advance. If you need more info, let me know.

 

[burgerwithcheese]

Update: after submitting this post, the forum came up with some recommended threads with similar problems, only those spikes lasted only a few seconds. So leaving this post open for now. Again, thanks in advance.

 

[Zerk2012]

Update: after submitting this post, the forum came up with some recommended threads with similar problems, only those spikes lasted only a few seconds. So leaving this post open for now. Again, thanks in advance.

That is probably the PL2 time, PL2 draws about 180 watts when it times out the watts drop.

 

[burgerwithcheese]

That is probably the PL2 time, PL2 draws about 180 watts when it times out the watts drop.

Thank you for your reply, do you mean for the simular posts/few seconds spikes, or regarding my problem?

 

[Zerk2012]

Thank you for your reply, do you mean for the simular posts/few seconds spikes, or regarding my problem?

Those CPU's have different power phases PL2 last about 20 seconds then it drops down to PL1.
PL 2 is about 180 watts probably a bit more than that cooler can cool.

Edit your problem

 

[Roland Of Gilead]

Thank you for your reply, do you mean for the simular posts/few seconds spikes, or regarding my problem?

Intel CPU's perform within certain power budgets. PL1, PL2, Tau.

PL1 is your longterm power draw. PL2 is the short term boost power. Tau is how long the PL2 burst lasts.

You can change these settings in the bios, or you could use something like Throttlestop to manage them.

Short term should always be greater than or equal to the long term power limit.

 

[Randi Poling]

I would maybe make sure that the Thermal Compoubnd spread is good? The AIO block is properly seated on the CPU? Just a couple of ideas.

 

[burgerwithcheese]

Those CPU's have different power phases PL2 last about 20 seconds then it drops down to PL1.
PL 2 is about 180 watts probably a bit more than that cooler can cool.

Edit your problem

Intel CPU's perform within certain power budgets. PL1, PL2, Tau.

PL1 is your longterm power draw. PL2 is the short term boost power. Tau is how long the PL2 burst lasts.

You can change these settings in the bios, or you could use something like Throttlestop to manage them.

Short term should always be greater than or equal to the long term power limit.

Thank you kindly. I will youtube how to change these settings in the bios!

 

[burgerwithcheese]

I would maybe make sure that the Thermal Compoubnd spread is good? The AIO block is properly seated on the CPU? Just a couple of ideas.

Thanks for your ideas. I tried multiple compounds including silver X. I have remounted the block a few times to see any difference, but it stayed the same. Also, the compounds covered all of the CPU. I tried the dot, the line and the X when applying the compounds.

 

[Randi Poling]

Thanks for your ideas. I tried multiple compounds including silver X. I have remounted the block a few times to see any difference, but it stayed the same. Also, the compounds covered all of the CPU. I tried the dot, the line and the X when applying the compounds.

Gotchaaaaa, yeah, sometimes if the block isnt making good contact with the cpu, could cause this issue. Yeah, youve managed to stump me, lol. Potentially an undervolt or something could fix this? Or maybe something in BIOS?

 

[burgerwithcheese]

Gotchaaaaa, yeah, sometimes if the block isnt making good contact with the cpu, could cause this issue. Yeah, youve managed to stump me, lol. Potentially an undervolt or something could fix this? Or maybe something in BIOS?

LOL! Yeah I am now searching for a good guide to undervolt or to edit the PL2 times (I am very new at messing with the bios) since I usually just get the system up and running when building a new PC. Thanks.

 

[Roland Of Gilead]

LOL! Yeah I am now searching for a good guide to undervolt or to edit the PL2 times (I am very new at messing with the bios) since I usually just get the system up and running when building a new PC. Thanks.

That's what Throttlestop is for. It's like a little cheat app for Intel processors It really can help when utilised correctly.

 

[burgerwithcheese]

That's what Throttlestop is for. It's like a little cheat app for Intel processors It really can help when utilised correctly.

I see, I am downloading as we speak! If I understand correctly; I can use Throttlestop to test, and when I am happy with the config, I can apply it to my bios? Or do I have to run this program at startup?

 

[Roland Of Gilead]

I see, I am downloading as we speak! If I understand correctly; I can use Throttlestop to test, and when I am happy with the config, I can apply it to my bios? Or do I have to run this program at startup?

So, there are a lot of things you can do with Throttlestop. Undervaluing is one of them. Yes, you are correct, you need to add TS to the schedular to start with Windows. Easy peasy. TS has a built in testbench, which you can run to see how your changes are effecting the CPU on the fly. Very useful

 

[burgerwithcheese]

So, there are a lot of things you can do with Throttlestop. Undervaluing is one of them. Yes, you are correct, you need to add TS to the schedular to start with Windows. Easy peasy. TS has a built in testbench, which you can run to see how your changes are effecting the CPU on the fly. Very useful

Alright, I will give this a go! Thank you very much Roland

 

[Roland Of Gilead]

Alright, I will give this a go! Thank you very much Roland

You're very welcome!

Here's a guide for it: https://www.ultrabookreview.com/31385-the-throttlestop-guide/

There are many guides like it. So, just read, and get comfortable with it, and give it a try.

The author for the software is a Tom's member (@uWebb429 ), and often helps users out with issues.

 

[burgerwithcheese]

So messing around with Throttlestop, I (in the meantime) searched for PL1 and PL2 on Google. After I learned how to see this in my motherboard, it turned out that my PL2 was set to 253 watts by default (!)

After setting my PL2 to 181 watts (intel's default for this processor), my heat problem disappeared completely and I get a maximum of 89C on full load untill it drops to PL1.

Thanks to everone for your help and inputs!

-bwc

 

[Roland Of Gilead]

So messing around with Throttlestop, I (in the meantime) searched for PL1 and PL2 on Google. After I learned how to see this in my motherboard, it turned out that my PL2 was set to 253 watts by default (!)

After setting my PL2 to 181 watts (intel's default for this processor), my heat problem disappeared completely and I get a maximum of 89C on full load untill it drops to PL1.

Thanks to everone for your help and inputs!

-bwc

Excellent Glad that's a result.

If you're happy with that, close the thread out by choosing the most appropriate anser as the solution.

 

[TerryLaze]

So messing around with Throttlestop, I (in the meantime) searched for PL1 and PL2 on Google. After I learned how to see this in my motherboard, it turned out that my PL2 was set to 253 watts by default (!)

After setting my PL2 to 181 watts (intel's default for this processor), my heat problem disappeared completely and I get a maximum of 89C on full load untill it drops to PL1.

Thanks to everone for your help and inputs!

-bwc

In your initial post you show the CPU running at 4.5 the first 20seconds and then dropping to 3.8-3.9

For things that take a long time 20 secs is nothing and having your CPU run at 100 degrees for 20secs is also nothing.
But for things that take a little time 6-700Mhz faster can make a noticable difference.
Just saying, if you notice anything being slower now that would be the cause.

 

[burgerwithcheese]

Excellent Glad that's a result.

If you're happy with that, close the thread out by choosing the most appropriate anser as the solution.

Thank you! How can I close the thread on this forum?

 

[burgerwithcheese]

In your initial post you show the CPU running at 4.5 the first 20seconds and then dropping to 3.8-3.9

For things that take a long time 20 secs is nothing and having your CPU run at 100 degrees for 20secs is also nothing.
But for things that take a little time 6-700Mhz faster can make a noticable difference.
Just saying, if you notice anything being slower now that would be the cause.

Good call, when I rerun Cinebench right now I see the max under full load is 5.088, so almost 5.1 GHZ. I have also pushed the Long Term Limit to 150 watt, and the max tempature is around 85 degrees. I'm happy!