AMD Ryzen 1800x CPU thermal throttling

warman65, please list your system specifications in your signature as I have, including BIOS version.  I suspect you have purchased an insufficient CPU cooler.  I use a Corsair H100i on my 1800X and can run Prime95 as long as I like with temperatures staying below 60C.  The H100i V2 is some cheaper and will probably serve.  I see almost no chance of talking AMD into raising the throttling temperature.  It will just cost them money.  I also see little chance people like me understanding the whole sensor/temperature picture.  I have heard AMD added 20C for 1800X to make it like other models - makes no sense to me.  The only path I see for you is to buy a cooler that is a better cooler and better buy.  I also feel that lower temperatures are always better and hitting the limit repeatedly will ultimately shorten your CPU life.  I always overkill on power supply and CPU cooler.  Good luck and enjoy, John.

MisterJ wrote: warman65, please list your system specifications in your signature as I have, including BIOS version.? I suspect you have purchased an insufficient CPU cooler.? I use a Corsair H100i on my 1800X and can run Prime95 as long as I like with temperatures staying below 60C.? The H100i V2 is some cheaper and will probably serve.? I see almost no chance of talking AMD into raising the throttling temperature.? It will just cost them money.? I also see little chance people like me understanding the whole sensor/temperature picture.? I have heard AMD added 20C for 1800X to make it like other models - makes no sense to me.? The only path I see for you is to buy a cooler that is a better cooler and better buy.? I also feel that lower temperatures are always better and hitting the limit repeatedly will ultimately shorten your CPU life.? I always overkill on power supply and CPU cooler.? Good luck and enjoy, John.

Thanks for your answer my system is a Mini Itx system so im very limited with the space.
this is the working computer:


I wish i can fit this one but it's too big for the case:


My system:
CPU: AMD Ryzen 1800x at stock speed.
GPU: Nvidia 1080 ti
RAM: 16GB DDR4 3600MHz
MOBO: Asrock AB350 Gaming-ITX/ac
HDD: 9TB
CPU Cooler: Cryorig C7

And my bios is the last one, a few days ago i updated the bios.
this is the idle temp:

MOBO:

20 min full load:


Inside:


Here is the MOBO Manual:
Manual

And today 13°C
Thanks!

Edited by warman675 - 02 Oct 2017 at 1:23am

I would love to see an AMD specification document that shows the maximum temperature of a Ryzen 7 1800X. Or of any Ryzen processor.

There are multiple safety features to protect a processor. Two are built into the processor itself. One is built into the mother board.

Thermal throttling, which is reducing the CPU core speed to stop the CPU temperature from continuing to increase once it reaches a certain temperature, is a safety feature built into the CPU by the manufacture of the CPU. The CPU still operates in this situation, just at a lower core frequency/speed.

If the CPU temperature surpasses a certain maximum allowed temperature, both the mother board and the CPU can turn off the CPU to protect it. Usually the mother board will turn off the CPU before the CPU does it by itself. The PC stops working completely in this situation.

It is not clear to me which type of thermal safety feature is active in your PC. Is it thermal throttling, or does the PC shut off?

The UEFI/BIOS of some mother boards allow you to change the thermal shutdown temperature. I have not seen that feature so far in the UEFI of my ASRock X370 board. There may be a reason for that.

The Cryorig C7 is not as good a CPU cooler as the AMD Wraith coolers are. The C7 is rated in testing to be only a little bit better than the Intel stock CPU cooler, which is considered one of the worst CPU coolers we can use. Current Intel CPUs begin to thermal throttle at ~100° C.

In a very small PC case like yours, using a C7 with virtually no ventilation at all, I'm not surprised your 1800X is reaching 75° C. If we subtracted the 20°C offset of Tctrl from your idle temperature of 34° C, do you really believe your idle temperature is 14° C with a C7?

I don't trust the CAM software, I've read too many bad things about it. At least run the Ryzenmaster software to verify that CAM is correct.

http://www.amd.com/en/technologies/ryzen-master

parsec wrote: I would love to see an AMD specification document that shows the maximum temperature of a Ryzen 7 1800X. Or of any Ryzen processor. There are multiple safety features to protect a processor. Two are built into the processor itself. One is built into the mother board. Thermal throttling, which is reducing the CPU core speed to stop the CPU temperature from continuing to increase once it reaches a certain temperature, is a safety feature built into the CPU by the manufacture of the CPU. The CPU still operates in this situation, just at a lower core frequency/speed. If the CPU temperature surpasses a certain maximum allowed temperature, both the mother board and the CPU can turn off the CPU to protect it. Usually the mother board will turn off the CPU before the CPU does it by itself. The PC stops working completely in this situation. It is not clear to me which type of thermal safety feature is active in your PC. Is it thermal throttling, or does the PC shut off? The UEFI/BIOS of some mother boards allow you to change the thermal shutdown temperature. I have not seen that feature so far in the UEFI of my ASRock X370 board. There may be a reason for that. The Cryorig C7 is not as good a CPU cooler as the AMD Wraith coolers are. The C7 is rated in testing to be only a little bit better than the Intel stock CPU cooler, which is considered one of the worst CPU coolers we can use. Current Intel CPUs begin to thermal throttle at ~100° C. In a very small PC case like yours, using a C7 with virtually no ventilation at all, I'm not surprised your 1800X is reaching 75° C. If we subtracted the 20°C offset of Tctrl from your idle temperature of 34° C, do you really believe your idle temperature is 14° C with a C7? I don't trust the CAM software, I've read too many bad things about it. At least run the Ryzenmaster software to verify that CAM is correct. http://www.amd.com/en/technologies/ryzen-master

i see all the temps beatween cam and ryzen master, and are the same, so it shows the real temps, but for the motherboard and the thermal throttling are 20C higher and i cannot see that.

and in old bios there is more commun to see the power off at the temp xx.
here is thermal throttling, there is a menu for that but not for disabling or correct the temps. and if i disable the c states or whatever, nothing happens. just the same thing at 75C.

warman675 wrote: parsec wrote: I would love to see an AMD specification document that shows the maximum temperature of a Ryzen 7 1800X. Or of any Ryzen processor. There are multiple safety features to protect a processor. Two are built into the processor itself. One is built into the mother board. Thermal throttling, which is reducing the CPU core speed to stop the CPU temperature from continuing to increase once it reaches a certain temperature, is a safety feature built into the CPU by the manufacture of the CPU. The CPU still operates in this situation, just at a lower core frequency/speed. If the CPU temperature surpasses a certain maximum allowed temperature, both the mother board and the CPU can turn off the CPU to protect it. Usually the mother board will turn off the CPU before the CPU does it by itself. The PC stops working completely in this situation. It is not clear to me which type of thermal safety feature is active in your PC. Is it thermal throttling, or does the PC shut off? The UEFI/BIOS of some mother boards allow you to change the thermal shutdown temperature. I have not seen that feature so far in the UEFI of my ASRock X370 board. There may be a reason for that. The Cryorig C7 is not as good a CPU cooler as the AMD Wraith coolers are. The C7 is rated in testing to be only a little bit better than the Intel stock CPU cooler, which is considered one of the worst CPU coolers we can use. Current Intel CPUs begin to thermal throttle at ~100° C. In a very small PC case like yours, using a C7 with virtually no ventilation at all, I'm not surprised your 1800X is reaching 75° C. If we subtracted the 20°C offset of Tctrl from your idle temperature of 34° C, do you really believe your idle temperature is 14° C with a C7? I don't trust the CAM software, I've read too many bad things about it. At least run the Ryzenmaster software to verify that CAM is correct. http://www.amd.com/en/technologies/ryzen-master i see all the temps beatween cam and ryzen master, and are the same, so it shows the real temps, but for the motherboard and the thermal throttling are 20C higher and i cannot see that. and in old bios there is more commun to see the power off at the temp xx. here is thermal throttling, there is a menu for that but not for disabling or correct the temps. and if i disable the c states or whatever, nothing happens. just the same thing at 75C.

I'm still not sure what is happening, you said thermal throttling, which is the CPU itself reducing its core speed to reduce its temperature, while the PC still works.

Does the PC shut off, or does it still work when the CPU temperature is 75° C? It seems you have thermal throttling, the core speed is reduced, but the PC still works. Is that right?

C States are a CPU power saving option, which is not related to thermal throttling or thermal shutdown of a CPU. Disabling C States actually causes a CPU to be hotter, since it can't go into a lower power state when it is idle.

Disabling random things in the BIOS won't help you.

I'll check the thermal throttling options in my X370 board.