[SOLVED] My PC is literally a microwave ?

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spooki1

spooki1

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Jan 6, 2021
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ok so, the title might have been a little misleading. but for some reason, my pc is overheating for an insane amount. and my CPU fan (AMD ryzen 2700x) is insanely loud. whenever I render in blender the CPU temperature spikes to 75 and stays there for a while meanwhile the fans go at insane volumes.... and if I open my case it goes from 65 to something like 68.

(my case is the sharkoon slider rgb)

https://imgur.com/a/6A8MLYF
View: https://imgur.com/a/6A8MLYF
 
Solution
cryoburner
Is your CPU overclocked? If so, you might want to disable that and use the stock clocks, as the 2700X's boost algorithms tend to get nearly all available performance out of the processor anyway, while being more energy efficient than when overclocked. An overclock probably isn't going to improve performance by more than 5%, but will tend to increase heat output by a greater degree.

And you should typically be able to adjust the fan curve in your motherboard's BIOS settings (and sometimes via a desktop utility for your motherboard). It's possible that the motherboard is ramping up the fan higher than it needs to go under load, and fans will tend to make a lot of noise at full-speed.

Just be sure to test that temperatures remain...
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spooki1 said:
ok so, the title might have been a little misleading. but for some reason, my pc is overheating for an insane amount. and my CPU fan (AMD ryzen 2700x) is insanely loud. whenever I render in blender the CPU temperature spikes to 75 and stays there for a while meanwhile the fans go at insane volumes.... and if I open my case it goes from 65 to something like 68.

(my case is the sharkoon slider rgb)

https://imgur.com/a/6A8MLYF
View: https://imgur.com/a/6A8MLYF
Click to expand...
75 is a good temp and really isn't considered too hot.
....as far as the noise....you may be able to add case fans....or go to a larger case.
 
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Krotow said:
+75C is fine for Ryzen CPUs. If you want colder CPU temperature though, use better CPU cooling and/or upgrade case/case cooling. If you still use stock CPU cooler, move to better cooler.
Click to expand...
I don't think I've made it clear but, my issue is the noise. the CPU cooler is extremely loud (only the cooler) and I'm trying to avoid upgrading the CPU cooler itself.
 
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Is your CPU overclocked? If so, you might want to disable that and use the stock clocks, as the 2700X's boost algorithms tend to get nearly all available performance out of the processor anyway, while being more energy efficient than when overclocked. An overclock probably isn't going to improve performance by more than 5%, but will tend to increase heat output by a greater degree.

And you should typically be able to adjust the fan curve in your motherboard's BIOS settings (and sometimes via a desktop utility for your motherboard). It's possible that the motherboard is ramping up the fan higher than it needs to go under load, and fans will tend to make a lot of noise at full-speed.

Just be sure to test that temperatures remain within reason during renders after adjusting the fan settings, as a 16-thread CPU can put out a fair amount of heat under heavily-multithreaded workloads. The Wraith Prism is pretty good for a stock cooler, but still has more limited cooling capacity than something like a 120mm tower cooler.

Some have also reduced fan noise by going into the Windows power options and reducing settings like the minimum processor state for the CPU's power plan to a lower value, or dropping the maximum state to 99%. That may not be as relevant for extended workloads like renders though, and you might have to test to verify that it doesn't affect performance significantly.
 
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Solution
Just by looking at the gallery on Sharkoon's site it appears your case has terrible air flow. I can't tell that the front panel is ventilated at all, IF it is. Any fan that you put there is only spinning (I also couldn't tell if there were mounts there). If you are going to keep that specific case I would consider modifying the front panel, dropping a side panel, or playing with fan configurations to see whether positive/negative/directed flow patterns work best.

In my own case I also use a 2700X. I don't render or any of that, but I game. I have a Phanteks case that originally came with a solid front with poor ventilation. They came out with an "A" revision and have a mesh front. It made a WORLD of difference for the CPU as well as the GPU. I also opted to put in an AIO after the mesh front revision. With a Hyper 212 I was seeing similar, slightly less temps than you are talking, and it was a bit rangy. The AIO and modified fan curves never gets over mid 50's. I can hear it during a heavy session, but wouldn't call it distracting any more.
 
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punkncat said:
Just by looking at the gallery on Sharkoon's site it appears your case has terrible air flow. I can't tell that the front panel is ventilated at all, IF it is. Any fan that you put there is only spinning (I also couldn't tell if there were mounts there).
Click to expand...
Judging by this video for the case, there are vertical vents along the front right edge. That's not as good for airflow as a mesh front, but should allow for front fans to be at least somewhat effective, particularly if they were fully populated and not allowing much air to recirculate around the edges...

View: https://www.youtube.com/watch?v=omc8Jv6Ng7I
 
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Mount the fans on the inside of the case, not exterior to the frame. Fans work on a vacuum in front, so giving them ample room to create that vacuum means better airflow. Fans mounted with slim volume in front can't create as strong a vacuum, so less air is pulled through those slats in the front panel. Less air = bad for airflow.
 
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