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Profile Keith Myers
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Message 8419 - Posted: 22 May 2024, 15:59:19 UTC - in response to Message 8411.  
True, motherboards have weird default settings. The CPU by itself, no matter what you tell the BIOS, will limit the clock speed to protect itself. It's hard wired and you cannot stop it, Intel and AMD don't want them frying under warranty. That's the only limit you need. If you see it stuck on this limit, you know you should cool more to get more clock speed.


I use custom loop cooling with a thick 360mm radiator on max fans all the time. It has sufficient cooling. I just have a very high ambient room temperature at all times with 5 multi-gpu hosts running all the time. I can normally keep this host in the middle 80's.

But the idiosyncrasy of my particular motherboard BIOS cpu monitor setting is well known by users in not letting the cpu control its thermals itself, it just preempts that on its own at 90° C.

Again, the matter of motherboard manufacturers thinking they know better than to just use the cpu manufacturer recommended board settings to vendors.

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Message 8420 - Posted: 24 May 2024, 5:29:21 UTC - in response to Message 8419.  

Last modified: 24 May 2024, 5:40:05 UTC
True, motherboards have weird default settings. The CPU by itself, no matter what you tell the BIOS, will limit the clock speed to protect itself. It's hard wired and you cannot stop it, Intel and AMD don't want them frying under warranty. That's the only limit you need. If you see it stuck on this limit, you know you should cool more to get more clock speed.


I use custom loop cooling with a thick 360mm radiator on max fans all the time. It has sufficient cooling. I just have a very high ambient room temperature at all times with 5 multi-gpu hosts running all the time. I can normally keep this host in the middle 80's.

But the idiosyncrasy of my particular motherboard BIOS cpu monitor setting is well known by users in not letting the cpu control its thermals itself, it just preempts that on its own at 90° C.

Again, the matter of motherboard manufacturers thinking they know better than to just use the cpu manufacturer recommended board settings to vendors.


I thank you all for your comments. I don't know enough to be familiar with the idiosyncrasies of this Aorus moitherboard nor the Ryzen 7 CPU. I just installed them..

I think the problem is SOLVED!

I reinstalled CoreTemp and omitted the thermal limit.

BTW, This compute has six 120mm fans, plus the CPU fan. On would think that's enough to keep temps within reason. No?

I had been controlling task selection manually, trying to finish each task by its indicated completion time.

But I decided to let BOINC decide the order and number of tasks. Let Asteroids, Milky Way, Einstein and WCG fight it out amongst themselves. Apparently, they've been playing well together.

The computer then started running a combination of as Asteroids and Einstein tasks, totaling 17 tasks at 192 degrees F (89C).

Milky Way completed 45 tasks in about 6 hours. Right now it's running 17 Asteroids tasks at 163 degrees F.

I don't know why it reverted to its previous performance. I didn't change the BIOS, only the CoreTemp settings.

I hope running at 192 degrees, if it does that again, won't cause damage to the hardware.

Thanks again for all your responses.

S. Gaber
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Message 8421 - Posted: 24 May 2024, 10:27:58 UTC - in response to Message 8420.  

Last modified: 24 May 2024, 10:29:10 UTC
Depends which CPU fan you've got, and if you used decent thermal paste. Some of both those things are rubbish. I use paste rated at 17 W/mK, and the biggest cooler I can fit.

You can get electrically conducting pastes which move much more heat, but you have to be very careful not to let any get onto the electrics or something expensive will fry. So I never touch that stuff.
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Message 8422 - Posted: 24 May 2024, 19:24:37 UTC - in response to Message 8421.  
Depends which CPU fan you've got, and if you used decent thermal paste. Some of both those things are rubbish. I use paste rated at 17 W/mK, and the biggest cooler I can fit.

You can get electrically conducting pastes which move much more heat, but you have to be very careful not to let any get onto the electrics or something expensive will fry. So I never touch that stuff.


i used the paste that came with the Ryzen 7. I think. Maybe it came with the MB. That was over a year ago. I can't remember that far back. :>))
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Message 8423 - Posted: 24 May 2024, 19:24:42 UTC - in response to Message 8421.  
Depends which CPU fan you've got, and if you used decent thermal paste. Some of both those things are rubbish. I use paste rated at 17 W/mK, and the biggest cooler I can fit.

You can get electrically conducting pastes which move much more heat, but you have to be very careful not to let any get onto the electrics or something expensive will fry. So I never touch that stuff.


i used the paste that came with the Ryzen 7. I think. Maybe it came with the MB. That was over a year ago. I can't remember that far back. :>))
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Message 8424 - Posted: 24 May 2024, 19:26:28 UTC - in response to Message 8423.  
Sorry about the double post. I did a double click on Post Reply.

S. Gaber
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Lamberto Vitali

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Message 8425 - Posted: 24 May 2024, 21:01:10 UTC - in response to Message 8424.  

Last modified: 24 May 2024, 21:01:33 UTC
Sorry about the double post. I did a double click on Post Reply.

S. Gaber
Editing your post to two spaces seems to delete it (if you get there during editable time). Pity they didn't just put a delete button, strange programmers....

Works on all Boinc forums.
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Message 8426 - Posted: 25 May 2024, 19:10:40 UTC
There are good thermal pastes and mediocre others. Some tend to 'pump out' over time. If it has been a year since you repasted the cpu heatsink, it might be good to revisit the interface and look at the paste spread and thickness by pulling the heatsink and examining.

I've had good results from Arctic MX-6 and my default paste is Kingpin Cooling Kpx. On the expensive side but worth it.

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Message 8427 - Posted: 26 May 2024, 0:21:29 UTC - in response to Message 8426.  
There are good thermal pastes and mediocre others. Some tend to 'pump out' over time. If it has been a year since you repasted the cpu heatsink, it might be good to revisit the interface and look at the paste spread and thickness by pulling the heatsink and examining.

I've had good results from Arctic MX-6 and my default paste is Kingpin Cooling Kpx. On the expensive side but worth it.


Thanks. I'll check them out.

S. Gaber
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Message boards : Number crunching : Something changed