Temperature problems.

Hello everybody.

I'm having temperature problems and I've had enough. I currently have an Asus Prime x370 Pro motherboard upgraded to the latest version. An Amd 3900X and air cooler brand "Deepcool ASSASIN III".
I live in one of the best cities in southern Spain where summer temperatures are around 41 degrees Celsius and this makes the temperature of my PC with some tasks soar to 100 degrees Celsius and in some cases even more.

What could I do? I am willing to change motherboard, heatsink for water and even change tower (I have the Cooler Master K500L).
Any suggestions are welcome. Thank you.

- Sorry for the English, I use an automatic corrector.

Translated with www.DeepL.com/Translator (free version)



Problemas de temperatura.

Hola a todo el mundo.

Tengo problemas de temperatura y ya me cansé. En la actualidad tengo una placa base Asus Prime x370 Pro actualizada a la ultima version. Un Amd 3900X y Enfriador por aire Marca "Deepcool ASSASIN III".
Vivo en una de las mejores ciudades del sur de España donde en verano las temperaturas rozan los 41 Grados centigrados y esto hace que la temperatura de mi PC con algunas tareas se disparen a 100 Grados centigrados y en algunos casos mas aun.

¿Que podria hacer? Estoy dispuesto a cambiar placa base, disipador de aire por agua e incluso cambiar de Torre (Tengo la Cooler Master K500L)
Cualquier suguerencia es bienvenida. Gracias.

- Siento el ingles, uso un corrector automatico.
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You could activate the Eco Mode in AMD Ryzen Master.
This would reduce your processors energy consumption and therefor the temperatur.
You will loose some crunching power. But for around 30% less energy consumption you still will get about 90% computation power.

This coul reduce your CPU Temperatur by a lot compared to know. And during challenges or autumn/winter you can go back to normal mode in ryzen master.

Another topic will be airflow in the case. Put your fence up to 70% or even 100%.

ok, thanks friends. I will try this.
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Greetings to all, thank you all for replying.
This is what I did:

1.- Change of thermal paste (MX-4).
2.- Fan cleaning.
3.- Added second extractor fan (NF-S12B).
4.- Disabled "Precision Boost".

It seems that the overall temperature has improved a lot with these changes.


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Greetings to all, thank you all for replying.
This is what I did:

1.- Change of thermal paste (MX-4).
2.- Fan cleaning.
3.- Added second extractor fan (NF-S12B).
4.- Disabled "Precision Boost".

It seems that the overall temperature has improved a lot with these changes.

@Seronegativo I can relate to the same Heat problem as you.

I live in the most south region of Peloponnese Greece and is also running the Ryzen 9 3900X on a Asus Tuf gaming X570 board and have been fighting the same heat problem.

The Ryzen 9 3900X is widely known to run extremely hot, on any forum I looked it up everybody is asking why precisely this processor is running this hot. we are talking 90-100 deg C. as average under workload.

There is several solutions to fix this.

To begin with I bought fans and CPU coolers like crazy. One bigger than the other, so much so that my wife looked at the sky and began to think i was loosing my sanity.
The stock CPU cooler was trashed after only two days and exchanged with the COOLERMASTER HYPER 212 LED TURBO CPU cooler which only gave me a few deg C. cooler. Spring came and I started to get worried. So i exchanged the HYPER 212 LED TURBO with a all-in-one CORSAIR HYDRO SERIES H100X HIGH PERFORMANCE 240MM LIQUID CPU COOLER that was only able to keep it cool until ambient temp raised to over 27 deg. c. then i exchanged ALL the fans in my tower (including the radiator fans) with NOCTUA NF-A14 INDUSTRIALPPC-3000 140MM PWM fans. which made my computer sound like a Jet plane about to take off, but actually was able to keep it cool until we saw 35 deg. C ambient and they was warning about Heat wave coming.
So I didn't know what to do and panicked and build a custom water loop with two radiators, a 420mm. and a 280mm. radiator that could keep my coolant all the way down to under 2 deg. c. over ambient temp. This actually worked, I managed to keep my CPU under 78 deg. c. running 100% work load (default precision boost overclock) during the 45 deg. C. heat wave we had this summer and that achieved with a fan speed level that did not sound like my computer was about to lift off into space.

I found out later that there is several other things one can also do.

1: lower the "thermal throttle temperature" in your BIOS to a level you are comfortable with. This will make your motherboard back off with power to the CPU when your CPU reach the set temperature and keep your CPU under the set threshold (with the cost of a little performance).

and/or

2: disable precession boost overclock (which will make you loose more performance in the long run in my opinion).

and/or

3: play with under volting your CPU, which will give you a huge edge in keeping your CPU temperature lower. with only a weary little performance cost. (this is a trail and error process that will take some playing around with, but is a process than can give you a lot cooler CPU).

Let me also note that trough a lot of research, i found out that this particular CPU have a small curvature where the CPU cooler make contact to the CPU and NO amount of cooling paste can actually make up for this curvature (I'm not sure if that is only the Ryzen 9 3900X or how many of the Ryzen CPUs this phenomenon is), But I do know that "EK Water Blocks" is making a special water block that follows this exact curvature and can actually make full contact with the whole CPU surface.

Good luck with it :)

Ambient temperature is the main issue here.

Here in Taiwan, summer temperatures may be as high as 36 degrees Celsius, but I keep my room at 32 degrees. My 3700X CPU is working at constant 86-88 degrees under 114 watts of Package Power, under the air cooler "Dark Rock Pro 4" and excellent case ventilation (2 intake & 2 exhaust fans).

PS. for my 3700X, I set the following voltage and clocks:
VID = 1300 mV (SVI2 TFN = 1237 mV),
Clock = 4300 MHz.

You could attempt a all-core fixed clock & undervolt (but stable) setting if you intend to run 24/7. It will help regulate the power consumption to a constant level.

You also seem to run tasks on SMT, or Simultaneous Multithreading, which will increase power usage with little gain in the throughput. On SMT, my CPU consumes 128 watts instead of 114 watts of power, so you'll like to avoid it.
I can see that your PPS-MEGA tasks turn around on average in 2500 seconds with -t2, and CPU times are 4800 seconds, which are twice as long as mine. You have a Ryzen 3900X CPU, which is the same generation as my 3700X, and they should perform alike for single cores.

http://www.primegrid.com/result.php?resultid=1262970540
This is one of your results, and
https://www.primegrid.com/result.php?resultid=1263165101
This is mine, which takes 2500 seconds on one core only.

The solution (not applicable for large LLR2 tasks (FFT length > 2048k divided by 3 or 4 cores) that you'll want to do multithreaded):

Download Bill2's Process Manager (link).
It has a nice feature called "Distribute each instance on a different CPU". Set up a rule for llr2_1.1.0_win64_201114.exe that enables this feature and set its affinity to every core other than HT (hyperthreaded) cores.
https://i.imgur.com/fYjzx4F.png

You'll also want to limit the multithreading threads to one, which can be done through app_configs.xml:

You also seem to run tasks on SMT, or Simultaneous Multithreading, which will increase power usage with little gain in the throughput. On SMT, my CPU consumes 128 watts instead of 114 watts of power, so you'll like to avoid it.
I can see that your PPS-MEGA tasks turn around on average in 2500 seconds with -t2, and CPU times are 4800 seconds, which are twice as long as mine. You have a Ryzen 3900X CPU, which is the same generation as my 3700X, and they should perform alike for single cores.

http://www.primegrid.com/result.php?resultid=1262970540
This is one of your results, and
https://www.primegrid.com/result.php?resultid=1263165101
This is mine, which takes 2500 seconds on one core only.

@Dennis Menace That is impressive! For around 115W, your temperature delta is 33 degrees (78-45), but my delta is 56 degrees (88-32). I think it's partly because of air vs. water cooling, and partly because of the power density? My CPU consumes 12-13W per core under manual overclocking. (Another CPU, 3300X, can easily do 14W per core.) In this situation my margin is too thin to run 16 vs. 8 PPS-MEGA tasks (or SGS.)

I did find that bigger LLR tasks that prefer multithreading, such as GCW (Martin Gardner's Birthday Challenge!!), do quite a bit better on SMT like other people said, based on this Prime95 benchmark result.

@Dennis Menace That is impressive! For around 115W, your temperature delta is 33 degrees (78-45), but my delta is 56 degrees (88-32). I think it's partly because of air vs. water cooling, and partly because of the power density? My CPU consumes 12-13W per core under manual overclocking. (Another CPU, 3300X, can easily do 14W per core.) In this situation my margin is too thin to run 16 vs. 8 PPS-MEGA tasks (or SGS.)