Question How hot is too hot for CPU temp ?

Wonderclam

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Jul 24, 2012
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I just upgraded my PC to a Ryzen 9800X3D with a Thermal Right CPU cooler. It was too loud, so I messed with the fan speeds to keep the noise level lower. It's sitting around 1100 to 1200 RPM

So, now when I'm gaming, the CPU temp is showing to be around 65 degrees

is this too hot? When idle, its around 56 degrees

I want to keep the noise level as it is now, but I'm afraid that 65 degrees may be too hot for the CPU?
 
65 Deg C at load isn't a number to be concerned about. You could try and curb some of those temps with probably a better quality thermal paste, maybe swap fans over for ones that are rated to have higher static pressure than what came with the cooler or improve the airflow inside the case.

What is the make and model of your case? Make and model of the fans in said case and their orientation? Ambient room air temps?
 
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I also believe 65 Degree C isn't that high. For my laptop, I'm having 75 - 80 C and At idle is 45 and when using browser/discord is 55.

This is my temperature, there are some certain ways by changing the settings to reduce temperature however it might decrease the overall performance of your system.
 
I just upgraded my PC to an AMD 9800X3D with a Thermal Right CPU cooler. It was too loud, so I messed with the fan speeds to keep the noise level lower. Its sitting around 1100 to 1200 RPM

So, now when I'm gaming, the CPU temp is showing to be around 65 degrees

is this too hot? When idle, its around 56 degrees

I want to keep the noise level as it is now, but I'm afraid if 65 degrees is too hot for the CPU
No, it's not high at all, actually pretty low for that CPU, you can safely let it reach up to 95c without even losing performance and up to 115c to shutdown so you have large margin to lower fan speed curve to lower noise. Most 120-140mm fans are quieter at or just bellow 1000 rpm. I would suggest setting curve to reach full RPM at 80-85c.
As for idle temps, that mostly depends on how "idle" is in your case. anything above 1-2% of CPU usage is not really idle. That depends on what is running in the background, Just because you are not running any programs doesn't mean OS isn't. For best temps and overall performance, best to keep background and startup programs at minimum.
 
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So, now when I'm gaming, the CPU temp is showing to be around 65 degrees
When I'm running video renders on my 7950X, it sits at 89 to 93C for hours (under a Noctual NH-D15). Modern CPUs are designed to run hot. My old AMD Phenom II X4 965 stops working above 60C. At 65C, your CPU is still 30C below the throttle temperature.
https://www.cpu-world.com/CPUs/Zen/AMD-Ryzen 7 9800X3D.html

It was too loud,
I let my fans run at full speed when necessary, but if you don't like loud noise, get a passive CPU cooler like the Noctua NH-P1. No fans, but quite big and heavy.:)

noctua-nh-p1.jpg


When compared to commercial server fans, desktop PCs are whisper quiet.
 
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The 9800X3D at stuck (without curve optimization) indeed runs hot when fully loaded (can easily reach 90+), but it's also well known to run impressively cold during gaming since games never fully load it and the extra cache makes it work less hard.

In some games mine doesn't even reach 50c. But... 65c is just fine and the CPU will still run great at this temperature (it will throttle at 95c and you are still way below that). But if a game needs to compile shaders or you run some CPU heavy tasks like video rendering you might see it going to 95 and throttle.

If the noise level is important for you and you don't run any CPU demanding tasks then you can leave it like that and you will be ok. Or you can adjust the cooler fan curve so the fans ramp up only when the CPU gets hotter to avoid throttling in more demanding tasks (look in your BIOS for that).

You can also set the curve optimizer. It helps a lot to lower the 9800X3D temperature significantly. The way to do that depends on the motherboard but it's basically:

-Enable curve optimizer
-Set it to all cores
-Set it to negative
-Start with 5 and test if it's stable
-Increase by increments of 5 up to something like 15.

I have mine set to negative 15 on all cores and it gives me a 10c improvement on heavy load temperature (of course the benefit is less with lighter tasks like games but it's still there). You can also do it with Ryzen Master but I personally prefer to apply my settings directly in the BIOS.

The other option is to get a better cooler. I use an AIO with the radiator fans set with the liquid temperature (requires an AIO that has this capability) and I don't even notice it when they ramp up since the liquid temp increases very slowly, and with a 360mm radiator you don't have to have them spinning very fast to maintain a low liquid temperature.
 
65 Deg C at load isn't a number to be concerned about. You could try and curb some of those temps with probably a better quality thermal paste, maybe swap fans over for ones that are rated to have higher static pressure than what came with the cooler or improve the airflow inside the case.

What is the make and model of your case? Make and model of the fans in said case and their orientation? Ambient room air temps?

It's a Lian Li Lancool II case and all the fans in the case are Be Quiet!

I got 2 in the front sucking in, one in the back pushing air out

its like 80 in the room, thats how I like it
 

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