Question This is going to be a long one, but I need some assistance

Jul 12, 2021
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Hi there!

I built a new computer last week, and after a week with a flooded basement apartment, I have gotten around to some gaming, and subsequently some benchmarking. I am a little worried about the temps that my new PC is exhibiting. I am going to split this post in two parts. The first has to do with the measured temperatures during benchmarking and gaming, and the second with the fan/airflow layout of my PC.

These are the specs of the PC:
https://pcpartpicker.com/list/MLRdRT
Phanteks Enthoo Evolv X (https://www.phanteks.com/Enthoo-Evolv-X.html)
3x Phanteks 140mm case fans (specs at top of this post: https://www.reddit.com/r/Phanteks/comments/9f1qzs View: https://www.reddit.com/r/Phanteks/comments/9f1qzs/fans_on_evolv_x/
)
ASUS ROG Crosshair VIII Dark Hero MoBo (https://rog.asus.com/motherboards/rog-crosshair/rog-crosshair-viii-dark-hero-model/)
AMD Ryzen 5900x CPU (https://www.amd.com/en/products/cpu/amd-ryzen-9-5900x)
NZXT Kraken X73 (https://nzxt.com/product/kraken-x73)
3x NZXT Aer P fans on the radiator for the X73 (https://nzxt.com/product/aer-p-120mm)
MSI 3080 ti Suprim X GPU (https://www.msi.com/Graphics-Card/GeForce-RTX-3080-Ti-SUPRIM-X-12G)
32GB 3600MHz G.Skill Trident Z Neo CL16 (https://www.gskill.com/product/165/326/1562839388/F4-3600C16Q-32GTZN)
ASUS ROG Strix 850W PSU (https://rog.asus.com/power-supply-units/rog-strix/rog-strix-850g-model/)

Here are the results from my benchmarking:

I should preface this part with the fact that the temperature in my apartment is between 30 and 32C at the moment, due to the industrial dehumidifier that is running here. How big of an effect does that have on cooling?
I am mostly worried about the GPU, as I have read that the CPU temps of the Ryzen 5900x can run rather hot without it being an issue. If the latter is incorrect, please do let me know. I do feel like the temperature goes up super fast, even for simple tasks, on the CPU though.

I have done no manual overclocking whatsoever.

Game testing:
Battlefield: CPU at 82C and GPU around the same
Total War: Warhammer II: CPU <80C – GPU at ~83C

Benchmarking:
Cinebench CPU benchmark: 87C peak on CPU multicore and 77 during singlecore

3DMark: View: https://imgur.com/a/PugBw9h
CPU peaking briefly at 87-89C when starting Time Spy
Time Spy: GPU peak temp is 80C
Time Spy Extreme: GPU peak temp is 80C
Time Spy Stress Test: GPU peak temp is 85C
Port Royal: GPU peak temp is 81
CPU test: Peak of 87C

I feel like the above is high, but I could just have a wrong impression.

Now to the second part regarding my case layout. I am 100% open to suggestions here, as I am not really sure how to do it differently.

Here is a picture of the inside of my case: View: https://imgur.com/a/a7yYKCH
The green line is the 3x 120mm Aer P radiator fans from NZXT. These are the specs for those fans:
Speed: 500 - 2,000 ± 300 RPM
Airflow: 18.28~73.11 CFM
Static Pressure: 0.18 - 2.93 mm-H₂O
Noise: 21 - 36 dBA
The orange and purple lines are 140mm Phanteks case fans, the ones that came with the case. These are their specs:
Speed: 1200 +/- 250 RPM
Airflow: 58.1 CFM
Static Pressure: 1.31 mm-H₂O
Noise: 24.2 dB-A

Red arrow is exhaust, blue arrows are intakes. Please guide me 😊

I am sure I have forgotten to add something, so if you feel some info is missing, please let me know, and I will add it ASAP!
 

Eximo

Titan
Ambassador
Yes, an ambient temperature of 30C is quite high and that does change the heat that is possible to exchange with the air. Your radiators will be less effective.

GPU temperature is fairly normal. That is the throttle point for the GPU and where it will sit when under a decent load.

Lower room temperature would certainly help, but the CPU isn't getting excessively warm, under 90C is okay. I would expect more with a 360mm AIO, but given the high room temperatures, that is probably normal.

Make sure the CPU cooler is properly clamped on there, and that would be about it.
 
Jul 12, 2021
6
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10
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Yes, an ambient temperature of 30C is quite high and that does change the heat that is possible to exchange with the air. Your radiators will be less effective.

GPU temperature is fairly normal. That is the throttle point for the GPU and where it will sit when under a decent load.

Lower room temperature would certainly help, but the CPU isn't getting excessively warm, under 90C is okay. I would expect more with a 360mm AIO, but given the high room temperatures, that is probably normal.

Make sure the CPU cooler is properly clamped on there, and that would be about it.
It is clamped on there good, I believe, but will check it. Thank you! I might try and repaste it, as I had to rotate the pump 90 degrees due to RAM clearance, after already touching it to the CPU.
If my GPU throttles at that point, I should see a performance decrease, yes? I paid a lot for the GPU (unfortunately), so if there is anything wrong with it, I would want to exchange it for a different card.


My initial thought is that more air is being pushed into the case than can be exhausted.

Overall airflow slows and heat is not being carried away.
How would I best remedy this with my current setup? I feel like swapping the back radiator fan to exhaust is probably a bad idea?
 

Eximo

Titan
Ambassador
You could certainly try flipping the fans around on the AIO, but I don't think it will make a huge difference.

Nothing wrong with the GPU, it will self regulate temperature to protect itself, so will the CPU. If you want better performance, you need a cooler environment for the GPU.
 

Ralston18

Titan
Moderator
Agree with @Eximo.

Flipping the fans around might make a difference.

Take a look at the case, cooler, and fan documentation regarding fans, fan specs, and placement.

And if the temperatures remain as is hopefully the room temperature will drop when the industrial dehumidifier is gone...
 

rubix_1011

Contributing Writer
Moderator
Agree, flip fans on AIO to move air out of the top of the case.

Generic copy/paste for troubleshooting cooler issues:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Cooler Troubleshooting and Questions


High CPU and GPU temperatures:

This could be caused by a few different things, please don't automatically assume 'the cooler is not working' without also checking if the case airflow is sufficient.

Remove the side panel of the PC case. Orient a house fan (desk or box style fan) to blow air into the case, directly over components at the highest setting.

This will represent a case with the best possible airflow possible. For reference, the fans I am providing as examples would look like the items below (just to clarify for anyone who might want reference)



Re-test as you have normally done - play games, run benchmarks, etc. to get to where temperatures were normally seen to be higher than they should. Normal room temperature is usually between 20-24C or 68-75F. Please note that every air or liquid cooler operates as a product of delta-T over ambient, meaning that if the PC is operational (simply turned on), it is impossible for the CPU to display a temperature below ambient room temperatures. If it is, this is likely a bug in software temperature reporting either from the desktop UI or the BIOS reading it incorrectly.

With the fan running at full speed, if temperatures drop by 5-7C or more, case airflow is one major issue to contend with. You will need additional fans or better fans for your setup in order to optimize air in and out of the chassis. This might even require consideration for a new PC case or leaving the side panel partially open during sessions of heavier computing until these items are corrected.

If your temperatures remain relatively the same (difference less than 1-2C), then you likely have an issue with the cooler in question (if CPU is hot, CPU cooler, if GPU is hot, GPU cooler). It would be good to then approach the next steps by thoroughly cleaning the cooler with compressed or canned air and ensuring there are not large blockages in cooling fins or on fans, etc. This might require the cooling fans to be removed from the heatsink or radiator to ensure there is not a buildup of pet hair, dust or even carpet fibers which can trap additional debris. Please ensure the PC is turned off and unplugged during this process to prevent unwanted startup to keep fingers safe from fan blades or accidental shorting if you happen to drop a screw onto other components during fan removal.

Removal of the cooler and re-application of thermal paste & re-seating the cooler can also be beneficial once cleaning of the cooler is ruled out by retesting the steps above.
 
Jul 12, 2021
6
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10
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You could certainly try flipping the fans around on the AIO, but I don't think it will make a huge difference.

Nothing wrong with the GPU, it will self regulate temperature to protect itself, so will the CPU. If you want better performance, you need a cooler environment for the GPU.
I might give that a go tomorrow. I took a look at HWMonitor, and it is showing that the GPU is 81C, the GPU memory is 96C, and the hotspot is 87C. Is that all good as well?


Agree with @Eximo.

Flipping the fans around might make a difference.

Take a look at the case, cooler, and fan documentation regarding fans, fan specs, and placement.

And if the temperatures remain as is hopefully the room temperature will drop when the industrial dehumidifier is gone...
Here's to hoping!
 

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