cancel
Showing results for 
Search instead for 
Did you mean: 

PC Processors

Grimreaper-DM
Journeyman III

Ryzen 9 7900x Hight CPU temp, over 100 C

Hello Guys, I have a new PC  I built and wanted to see if anyone here could suggest an optimum BIOS settings for moderate CPU temps and decent performance. 

AMD Ryzen 9 7900X Gigabyte X670 AORUS ELITE AX  Radeon RX 7800 XT  16GB

I have tried a few BIOS tweaks and re-seated the AIO cooler with new thermal paste and still no change with the case open. The temps seem to reach a max of 102 C and then I switch it off just to be safe with the processor.

0 Likes
7 Replies
misterj
Big Boss

Grimreaper-DM, the max temperature for the 7900X is 95C, so I suspect you are not really seeing 102C except presented by a faulty utility. Please install Ryzen Master (RM) and see what your temperatures really are. I suggest you stay out of BIOS and do a Clear CMOS. John.

0 Likes

Hello John,

 

Thank you for getting back to me and apologise for the late response as I had been caught up with other stuff... I did reinstall the ryzen master software and did a clear CMOS when the PC did not post after I made some changes on the ryzen master manual config.

PC booted after the CMOS clear and was fine for a could of days and then I realized I needed to update the BIOS as I reset it. Once I updated the BIOS the PC seems to be doing the overheating thing again. It does this as soon as I power it on and the temps do go upto 117 C tops and I have verified this with the deepcool software for the AIO im using, ryzen master as well shows the temps over 100 C and even on Hwinfo sensors but no thermal throteling showed on Hwinfo.

I can test the BIOS update theory by clearing the CMOS again and checking if the overheating continues but not sure if running the MoBo on an older BIOS would be a good thing.

 

Thank you for you time and assistance.

 

Regards,

Darrick.

0 Likes

Darrick, I do not believe any of the temperatures you posted. Unless you have disabled PROCHOT which can lead to destroying the processor, the PC should have powered off.  Do a Clear CMOS, uninstall all the applications your are quoting and post a screenshot of RM running Cinebench R24 Multicore. Stay out of BIOS. John.

0 Likes

Hello John,

 

I do understand that the temps that I am mentions are ridiculous but I really did not make any changes in the BIOS and stuck to your word of staying out of it. PROCHOT is not disabled by me and the PC shoudl ideally turn off when it reaches such high temps but it goes upto 117 ( atleast thats what RM, the Deepcool software and Hwinfo say ) and then it turn off as it should.

I did do a clear CMOS and updated BIOS from the Gigabyte website and the issue was the same. When the PC  is powered on the AIO fans go full throtel and the temps keep climbing on the desktop home page with no apps running from 60 C to 110C + and powers off.

As this was keeping me up at night I turned the PC in at the local PC wholesaler who I bought the parts from to test for any faulty hardware or other issues that I may not have noticed.

I will keep you posted once I get a reply from the techs once they have done a diagnostic.

Thank you once again for your help! Have a nice one!

 

0 Likes
roupa_de_trapo
Adept III

Depending on your fine adjustments in the BIOS and the type of cooling, the Ryzen 7000 can get quite hot. This happens because the processor has several thermal sensors that continuously measure the temperature, if there is a margin, it will try to increase the Clock and this implies exceeding 95°C which is the peak throtlle of the first moment, let's assume that your cooler can extract 300 watts, then the processor measures how much it can rise to the limit of around 200 watts. Clock throtlle can happen after 95°C has already passed. As the Ryzen's contact area is smaller than the old models, and the temperature rises exponentially, there is a possibility of exceeding 95°C. However, the internal temperature monitoring system works together with this heat flow capacity and how much current the system can maintain, for example, in my 360 mm liquid cooler I already obtained 115°C peak. In my air cooler I didn't usually go much above 95°C and I already had a throtlle in the clock, now with the curve shaper i've reached 105°C. For Higher Clock, the higher the maximum temperature, if the temperature stops rising, the Clock can remain almost steady (oscillates within the maximum possible margin).

Another example, suppose that up to 5GHz, on all cores, the temperature is 64°C, then you have margin up to the transistor's operating limit, which is 74°C, then you increase these values ​​to 5.5GHz and then From 95°C you start to notice that there are peaks of 100°C that the system showed on the screen, then the heat rises exponentially, but the system has already lowered the clock due to thermal monitoring, to 5GHz, while the heat is not rising , the system keeps the clock as possible. But the heat does not flow at the same speed as it is generated, so there is a new peak of 105°C, so the system lowers the Clock a little more. Any time the monitoring system sees that there is room to rise, it speeds up the clock further. Therefore, your temperature may spike higher than 100°C, but your clock has already dropped and this happens much faster than what is shown in visual monitoring. In any case, these values ​​are within the operating range of the equipment and the computer would shut down or restart if they were dangerously exceeded. Note that your clock goes up more with more robust cooling and, consequently, the recorded temperature goes up too.

Observe the maximum clock you can achieve at each temperature value, you can use ECO mode to improve temperatures. The higher the voltage value, the higher the temperature, the higher the clock, the higher the temperature, the smaller the contact area of ​​the processor, the lower the heat output flow. Although the heat recorded is above 95°C, the clock has already throttled (5GHz -->4GHz -->2GHz)

0 Likes

Hello and thank you for taking your time and providing me with valuable information.

 

I understand that the processors were designed to run at these high temps but what I do not get is that the temps seems to gradually increase from powering on and ideling in windows from 60C all the way upto 117 C and then the PC turns off.

This seems to happed everytime the PC is powered on and I have tried to reboot using ECO mode but the results are the same.... upon booting into win 11 the AIO cooler fans go full throtel and the temp keeps climbing from 60 all the way to 117 and then shuts off.

 

I was looking to get some guidance on adjusting the clock speeds and voltages so that I can control the temps and not run it on a constant 100 C above for pretty basic tasks and not even gaiming.

The motherboard is Gigabyte X670 AORUS ELITE AX

Deepcool Mystique 360 AIO liquid cooler.

 

0 Likes

Grimreaper-DM, What did you hear from the techs? What are your ambient temperatures? Are they increasing as the day goes? I would say you have a cooler problem. Either your pump is clogged up or not running at speed. I would suggest you connect your pump and fans to 12 Volts from the power supply. You will not be able to adjust clocks speeds to fix this. Next is to RMA the cooler and I suggest you talk to them now. John.

0 Likes