PC Graphics

[George1618]

First of all the components:

Motherboard: MSI MPG X570 Gaming Plus

CPU: AMD Ryzen 9 5900x

AIO: Corsair Hydro Series H100x High Performance

So I recently also bought a 4090 and I played a little bit of Cyberpunk, the performance was good but still a bit lower than what it should've been, in terms of FPS. Than the Wu Kong benchmark tool came along and I notice some stuttering. After some investigation I found out that my CPU temp was 100 Celsius degrees.

I change the thermal paste => nothing changed.

Updated my bios and change some settings that I've seen in another reddit post => nothing changed.

Than I started looking into the case ( a SilentiumPC Ventum VT4V EVO TG ARGB) and I notice the following: I have 4 fans from the case ( 3 in front 1 in the back, all argb ). They are all connected in the back of the case to a module. From this module 2 cables are connected on 2 slots in the motherboard: SYS FAN 3 and something with ARGB in the name.

From the AIO ( the part that sits on top of the CPU) leaves a cable that is connected to PSU and one that was connected on the motherboard to something called Pump Fan.

The AIO fans ( that are on the top of the case ) are connected on the motherboard to something called CPU Fan.

So I did the following: removed the cable from the Pump Fan (apparently this means that the pump fan will run at 100% now)=> slight improvement, Wu Kong has no stuttering anymore, but the temp is still higher than what people say it should be.

Than from Ryzen master, I selected game mode and change the Peak Voltage to be 1.2875 => slight improvement, in Cyberpunk maxed out the CPU temp sits at 80-85 Celsius degrees. In Wu Kong at 70-80. In idle and with silent selected in Dragon center for the other fans, the CPU sits at 48-55.

I also have to mention that those temperatures happen at 3700 MHz and are not OC temps. Also, room temperature ranges between 20-30 Celsius degrees.

Do I need to change my cooler ? Is it ok ? Some people say AMD CPUs have higher temperatures.

[johnnyenglish]

Hi,

Just replied a similar post but with a 7900X.

TLDR: 240 is not enough in my opinion for that CPU. You can offset undervolt without affecting performance and/or curve optimize it (that can sometimes lead to a better performance), but in the end I would change it for a 360 or 280 at the very least.


Good Luck

[George1618]

Hello! Thanks for the answer!

I saw a reddit comment where someone said he undervolt it to 1.21V ( which is seem a little excessive ) and cap the frequency at 4550 MHz. He had a 360mm cooler, but his CPU temp improved by 10 Celsius degrees.

But in the end, yeah, I'll guess I'll have to change the case and the cooler.

[johnnyenglish]

I would offset undervolt, its not a fixed voltage as it still oscillates. If you do this from BIOS, the board just sends what the CPU requests minus the offset value, so it normally won't cap performance and sometimes it can lead to higher boosting due to improved temperature headroom.

If you need a video I can leave one from my channel.

Don't get me wrong, 240 can cool that CPU but it needs a lots of patience, tweaking, maybe luck and some compromises. I'm rocking a 240 on a 7950X but it would be better to have the right cooler in the end.

Good luck 

[George1618]

Yes, a video will be nice, thanks!

I changed the CPU Boost Clock Overdrive to Enabled( Negative ) and 200 MHz as value, played a little Lies of P, the frequency was slightly higher than 4600 ( 4800 is the maximum) and the temperature was 90. The only way I got good temperatures was at 3700 MHz and 1.28V, the performance was ok too.

[FunkZ]

The Corsair Hydro Series H100x launch date was 2018. How old is your unit?

AIO will need maintenance after a period of some years, the coolant will not last forever. And some units had problems with tubing plasticizer or coolant clogging the cold plate fins.

[George1618]

The unit is 3 years old.