Question AMD CPU idle ~70c and reboots at 90c

[asw2012]

For the past 6-8 months or so I have been trying to nail down random reboots. Well, I installed a program to monitor the CPU temps and found the problem. My CPU idles at 70c and does reach 90c - this is when the computer shuts off and reboots. I had a Cooler Master Hyper 212 then I "upgraded" to a Be Quiet Dark Rock Pro 5.

Computer has never been overclocked, used for typical office work and some gaming.

After the new CPU cooler was installed, the temps did not really change much. Sometimes at idle, it will go down to 50c but then it will reach 85c with virtually no workload. I watch it boot into windows and it will reach 88c then settle down, but then it will spike to 85-87c, again with no load.

The fans on the CPU are at 100% - forced. Still CPU temps bounce around.

I've tried re-seating the CPU, re-seating the CPU coolers and eventually upgraded the CPU cooler and using corsair XTM70 paste. I cannot see any visible damage on the CPU heatsink and to make sure, I used an extremely fine honing stone to knock off any high spots, which I did not find much problem here.

Any ideas here?

Computer specs:
MSI MEG X570S ACE MAX
-BIOS: 7D50v1C
AMD Ryzen 9 5950X
MSI Radeon 6950XT
NVME Samsung 980 2TB
RAM G.SKILL Ripjaws (4 x 16GB) 288-Pin PC RAM DDR4 3600 Model F4-3600C18Q-64GVK
PSU Corsair RM850x

 

[Lutfij]

Welcome to the forums, newcomer!

After the new CPU cooler was installed, the temps did not really change much. Sometimes at idle, it will go down to 50c but then it will reach 85c with virtually no workload. I watch it boot into windows and it will reach 88c then settle down, but then it will spike to 85-87c, again with no load.
Have you tried using Ryzen master's Curve Optimizer, perhaps undervolting your processor and GPU?

The fans on the CPU are at 100% - forced. Still CPU temps bounce around.
What is the make and model of your case and the layout of fans in said case? Ambient room air temps?

to make sure, I used an extremely fine honing stone to knock off any high spots, which I did not find much problem here.
Mind passing on images of your

PSU Corsair RM850x
How old is the PSU?

 

[asw2012]

Welcome to the forums, newcomer!

After the new CPU cooler was installed, the temps did not really change much. Sometimes at idle, it will go down to 50c but then it will reach 85c with virtually no workload. I watch it boot into windows and it will reach 88c then settle down, but then it will spike to 85-87c, again with no load.
Have you tried using Ryzen master's Curve Optimizer, perhaps undervolting your processor and GPU?

The fans on the CPU are at 100% - forced. Still CPU temps bounce around.
What is the make and model of your case and the layout of fans in said case? Ambient room air temps?

to make sure, I used an extremely fine honing stone to knock off any high spots, which I did not find much problem here.
Mind passing on images of your

PSU Corsair RM850x
How old is the PSU?

Just bought it a week ago, thinking that was the problem.

 

[skitz9417]

what is ur cpu cooler for a cpu like that i would go for a nh-d15 or 240mm rad aio cooler sounds like ur cpu cooler cant keep up with the heat load

 

[asw2012]

what is ur cpu cooler for a cpu like that i would go for a nh-d15 or 240mm rad aio cooler sounds like ur cpu cooler cant keep up with the heat load

its a Be Quiet Dark Rock Pro 5

 

[TerryLaze]

Computer has never been overclocked

MSI MEG X570S ACE MAX

Anytime you buy a mobo that looks like it was named by a fifteen year old you have to at least double check that the bios settings are correct.
My guess is that the mobo applies overclocking by default, if PBO is enabled or in auto then that would be the first thing to turn off, but it could also have many other settings that need fixing.

 

[geofelt]

The DRP5 is an excellent cooler.
In your motherboard cpu fan profile, does the fan rpm start at 500 or more,?
If not the chip will heat up initially with no load. And, there is always some sort of minimal load.

 

[Richj444]

For the past 6-8 months or so I have been trying to nail down random reboots. Well, I installed a program to monitor the CPU temps and found the problem. My CPU idles at 70c and does reach 90c - this is when the computer shuts off and reboots. I had a Cooler Master Hyper 212 then I "upgraded" to a Be Quiet Dark Rock Pro 5.

Computer has never been overclocked, used for typical office work and some gaming.

After the new CPU cooler was installed, the temps did not really change much. Sometimes at idle, it will go down to 50c but then it will reach 85c with virtually no workload. I watch it boot into windows and it will reach 88c then settle down, but then it will spike to 85-87c, again with no load.

The fans on the CPU are at 100% - forced. Still CPU temps bounce around.

I've tried re-seating the CPU, re-seating the CPU coolers and eventually upgraded the CPU cooler and using corsair XTM70 paste. I cannot see any visible damage on the CPU heatsink and to make sure, I used an extremely fine honing stone to knock off any high spots, which I did not find much problem here.

Any ideas here?

Computer specs:
MSI MEG X570S ACE MAX
-BIOS: 7D50v1C
AMD Ryzen 9 5950X
MSI Radeon 6950XT
NVME Samsung 980 2TB
RAM G.SKILL Ripjaws (4 x 16GB) 288-Pin PC RAM DDR4 3600 Model F4-3600C18Q-64GVK
PSU Corsair RM850x

I know you have already reseated the cooler, but idling at 70c sure sounds like it isn't seated properly or not enough thermal paste. If you're sure it's actually idling, that is. What does cpu usage look like in task manager when it's at 70c?

 

[helper800]

For the past 6-8 months or so I have been trying to nail down random reboots. Well, I installed a program to monitor the CPU temps and found the problem. My CPU idles at 70c and does reach 90c - this is when the computer shuts off and reboots. I had a Cooler Master Hyper 212 then I "upgraded" to a Be Quiet Dark Rock Pro 5.

Computer has never been overclocked, used for typical office work and some gaming.

After the new CPU cooler was installed, the temps did not really change much. Sometimes at idle, it will go down to 50c but then it will reach 85c with virtually no workload. I watch it boot into windows and it will reach 88c then settle down, but then it will spike to 85-87c, again with no load.

The fans on the CPU are at 100% - forced. Still CPU temps bounce around.

I've tried re-seating the CPU, re-seating the CPU coolers and eventually upgraded the CPU cooler and using corsair XTM70 paste. I cannot see any visible damage on the CPU heatsink and to make sure, I used an extremely fine honing stone to knock off any high spots, which I did not find much problem here.

Any ideas here?

Computer specs:
MSI MEG X570S ACE MAX
-BIOS: 7D50v1C
AMD Ryzen 9 5950X
MSI Radeon 6950XT
NVME Samsung 980 2TB
RAM G.SKILL Ripjaws (4 x 16GB) 288-Pin PC RAM DDR4 3600 Model F4-3600C18Q-64GVK
PSU Corsair RM850x

The TIM underneath the IHS may have cracked or otherwise been rendered useless. The only way you can check this is by delidding the CPU. This material should be replaced or you could go to direct die cooling but all of the above including delidding comes with risks. All of the above also assumes no user error in the installation of the cooler, CPU, and TIM.