5950x Temp concern!!

thesword22 · 27 May 2022 at 11:15

Hey all,

I have just rebuilt my PC with the following:

Case - Zalman z9 neo plus
AMD Ryzen 5950x
Arctic MX4 thermal paste
TeamGroup 64GB RAM
ASUS Crosshair VIII MB
1660TI GPU - OLD (not replaced)

I know that the temps can run hotter on the 16c Chips but i am seeing 98.5C max underload. To me that is ringing alarm bells.

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The cooler i am using is a asetek 570 lxl 240mm at the front of the case with 2 fans in a pull air cofiguration
2 x 120mm fans at the top of te case in an exhaust setup
1 x 120mm fan at the rear in an exhaust setup as well

With the fans at full load around 1700-1800mm the temps were seen as below while running Star citizen, Browser and video playing

Any thoughts on how i can decrease these temps.

VersionMonkey · 27 May 2022 at 11:33

All new apart from the GPU?

Probably the first thing to do would be to remount the cooler making sure it's on the CPU properly.

How did you apply the thermal paste? A blob in the middle is not optimal for Ryzen CPUs - either spread it manually over the whole IHS or apply in an X shape.

thesword22 · 27 May 2022 at 11:38

Thanks for the reply. yea the thermal paste was 2 /3 pea size in the center. sounds like i may to have spread a layer. is there any best advise on this, as obviosully dont want to overspread?

VersionMonkey · 27 May 2022 at 12:18

You're aiming for a thin, but complete, layer across the whole IHS right to the corners and edges (so none of the IHS is visible).

Start with a similar amount and use a card or spatula to evenly spread it out - if you can't get complete coverage then add a tiny bit more.

Take the opportunity to double check you're using the right backplate/screws/springs etc. for an AM4 socket.

Orcvader · 27 May 2022 at 12:21

If you're worried about spreading it yourself the X method works completely fine. Haven't had any issues with both a 3900X and 5800X3D using this method.

Another option is a negative offset in the PBO settings, this can also help with temps significantly.

MissChief · 27 May 2022 at 12:27

Also have a 5950x, used X method, Have it under a Galahad 360mm and it can very quickly spike to 91'c underload before the Cooler pump can ramp up to bring the temps down. It then settles around 84-85'c which seems pretty normal for high core count Ryzen.

humbug · 27 May 2022 at 12:31

thesword22 said:
Hey all,

I have just rebuilt my PC with the following:

Case - Zalman z9 neo plus
AMD Ryzen 5950x
Arctic MX4 thermal paste
TeamGroup 64GB RAM
ASUS Crosshair VIII MB
1660TI GPU - OLD (not replaced)

I know that the temps can run hotter on the 16c Chips but i am seeing 98.5C max underload. To me that is ringing alarm bells.

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The cooler i am using is a asetek 570 lxl 240mm at the front of the case with 2 fans in a pull air cofiguration
2 x 120mm fans at the top of te case in an exhaust setup
1 x 120mm fan at the rear in an exhaust setup as well

With the fans at full load around 1700-1800mm the temps were seen as below while running Star citizen, Browser and video playing

Any thoughts on how i can decrease these temps.

How old is that cooler? i can't seem to find any information on it.

humbug · 27 May 2022 at 12:34

Just thinking..... you say you have the cooler mounted at the front, is that with the tubes at the top or bottom? if its mounted with the tubes at the top it could be pushing air around the system and that would explain your temps.

thesword22 · 27 May 2022 at 12:58

humbug said:
How old is that cooler? i can't seem to find any information on it.

The Cooler was bought back in 2017 as part of an 8 pack approved bundle. if you google Asestek 570 lxl 240mm you should find it.
The PC has been reguluraly taken apart and cleaned evey 6 months or so.

It was the same cooler i used on the Ryzen 7 1700 bundle. I know its quite a jump but have seen other systems out there with a 240mm closed loop cooler with ryzen 9 so maybe a newer cooler?

The pipes are currently going from the top of the radiator to the processor.

thesword22 · 27 May 2022 at 12:59

Orcvader said:
If you're worried about spreading it yourself the X method works completely fine. Haven't had any issues with both a 3900X and 5800X3D using this method.

Another option is a negative offset in the PBO settings, this can also help with temps significantly.

Sorry PBO settings. please could you explain a little?
All settings are currently standard with no BIOS tweaking or Overclocking at the moment.

Orcvader · 27 May 2022 at 13:08

thesword22 said:
Sorry PBO settings. please could you explain a little?
All settings are currently standard with no BIOS tweaking or Overclocking at the moment.

Not 100% sure where in the Asus BIOS settings it's in but a quick Google suggests it's under Extreme Tweaker -> Precision Boost Overdrive -> Curve Optimiser, and then set it to manual. A lazy start will be all cores and starting with -10 negative. This will mean less volts when boosting which will help reduce temps during max load since it's pretty much undervolting.

humbug · 27 May 2022 at 13:09

thesword22 said:
The Cooler was bought back in 2017 as part of an 8 pack approved bundle. if you google Asestek 570 lxl 240mm you should find it.
The PC has been reguluraly taken apart and cleaned evey 6 months or so.

It was the same cooler i used on the Ryzen 7 1700 bundle. I know its quite a jump but have seen other systems out there with a 240mm closed loop cooler with ryzen 9 so maybe a newer cooler?

The pipes are currently going from the top of the radiator to the processor.

Are you able to turn the radiator round so the pipes are at the bottom? Or mount it to the top of the case?

The the problem with the pipes being at the top of the radiator is there is air inside them, especially if its 5 years old, if that air is being pushed round the system, which it likely is, it will your CPU's temps will suffer, there could even be an airlock in the pump.

thesword22 · 27 May 2022 at 15:48

humbug said:
Are you able to turn the radiator round so the pipes are at the bottom? Or mount it to the top of the case?

The the problem with the pipes being at the top of the radiator is there is air inside them, especially if its 5 years old, if that air is being pushed round the system, which it likely is, it will your CPU's temps will suffer, there could even be an airlock in the pump.

Will look at this tonight but not sure the case will allow the turning of the pipes to the bottom due to the PSU enclosure.
Will see if the RAD can be located on the top of the case but i think the size m,akes it not fit with the MB and RAM

Will also change the paste.

Thank for the replies i will post updates

thesword22 · 27 May 2022 at 17:36

humbug said:
Are you able to turn the radiator round so the pipes are at the bottom? Or mount it to the top of the case?

The the problem with the pipes being at the top of the radiator is there is air inside them, especially if its 5 years old, if that air is being pushed round the system, which it likely is, it will your CPU's temps will suffer, there could even be an airlock in the pump.

So cant mount the Rad at the top of the case and cant turn it round due to the PSU cover.
Checked the thermal paste and there was definately a blank spot in the middle funnily enough where i put the dollop previously.
Just repasted in an X after thoroughly cleaning and ran Cinebench.

Multi core test with on pass 17 9 minutes in the below are the results

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So still hitting 92.5c according HWmonitor and 88.7c average on the cpu die accroding to HWinfo.
Havent tried star citizen yet though.

TIA for any other info - i am feering a cooler change currenttly and possibly a bigger case to accomadate lol

Orcvader · 27 May 2022 at 18:11

I would definitely try the negative offset. Should be able to shave off another few degrees.

I generally focus on the tctl/tdie temp in HWiNFO and 84.3c looks a lot more reasonable.

wookiee87 · 27 May 2022 at 18:29

are you running auto volts on your chip as 1.488v max with almost 5gz is why your chip is runnng really hot, i had the same problem and in the end i set a manual x47 ratio and undervolted my 5950x to 1.275v on manual cpu voltage, i run custom loop 420m rads and even then under synthetic load my loop struggles even at 4.7ghz all core, games on the other hand never make the cpu go past 70 degrees, and my system remains cool and quiet. you have to manage the voltage and max speed of the chip unless you run beefy cooling, a 240mm rad simply isnt enough to cool a 5ghz 16 core cpu especially with auto volts as high as 1.5v

thesword22 · 27 May 2022 at 23:14

So I have adjusted the voltage to a negative offset and the pbo has been set to manual with a negative 12 configuration

It's still pulling 89c on tctl and hitting a max of 96c.

So I think a new cooler is in order

muon · 28 May 2022 at 00:59

Turn off PBO if your cooler can't handle more than 142W of power. PBO can easily hit >200W of power depending on what your motherboard is willing to push and you don't use much of a negative offset.

wookiee87 said:
are you running auto volts on your chip as 1.488v max with almost 5gz is why your chip is runnng really hot, i had the same problem and in the end i set a manual x47 ratio and undervolted my 5950x to 1.275v on manual cpu voltage, i run custom loop 420m rads and even then under synthetic load my loop struggles even at 4.7ghz all core, games on the other hand never make the cpu go past 70 degrees, and my system remains cool and quiet. you have to manage the voltage and max speed of the chip unless you run beefy cooling, a 240mm rad simply isnt enough to cool a 5ghz 16 core cpu especially with auto volts as high as 1.5v

It only runs such high volts when it is using like 1 or 2 threads. It doesn't use much power.

By setting a manual ratio of 47x you are losing a lot of performance.

Cyber-Mav · 28 May 2022 at 06:17

if its seated correctly then pump failure or blockage.

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wookiee87 · 28 May 2022 at 11:21

muon said:
Turn off PBO if your cooler can't handle more than 142W of power. PBO can easily hit >200W of power depending on what your motherboard is willing to push and you don't use much of a negative offset.

It only runs such high volts when it is using like 1 or 2 threads. It doesn't use much power.

By setting a manual ratio of 47x you are losing a lot of performance.

i ran a auto cpu ratio but kept my vots locked to 1.275v last night and saw around 4-4.2ghz in most work loads, temps were amazingly low under 50 degrees but compared to my overclock of 4.7ghz all core i was loosing out (in games) plus temps when at 4.7ghz wernt all that bad, i've tinkerd a fair bit with my 5950x and i can say anything above 1.35v with high core speed will result in massive temps regardless of what cooling you run, if you want the best you have to drop the voltage and manage the clocks, why run at the ragged edge and have temps above 90 when you could back down a bit and save the chip, the hotter ryzen gets the more degredation the silicone suffers, upto 80 degrees is fine but anymore is time to tinker to bring down temps, undervolting is key