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Question 3900x problems

Gever

Junior Member
Jul 8, 2020
10
0
6
Need help with my pc (3900x / asus C7H / noctua nh-u12s push & pull setup)

Can someone explain this behavior? temps constantly jumping from 45c-70c up and down
N.jpg

Even in bios i get 60-65c , all settings on auto, enabled d.o.c.p , bios updated to last version (3103).

When i use windows power saving mode temps are 40-45c, but the cpu package power (SMU) is still 30W idle , any tips to reduce power draw and put all cores to sleep while idle? without using power saver mode and reducing clock speed to 2200mhz..?
I've seen THIS post and i don't understand how he achieved this

Thanks in advance and sorry for my bad english
 
Last edited:

viivo

Diamond Member
May 4, 2002
3,320
25
91
Did you install the AMD chipset drivers including Ryzen power profiles? Have you tried with DOCP disabled? Sometimes it can increase voltages to insane levels.
 

DrMrLordX

Lifer
Apr 27, 2000
16,039
4,997
136
Have you had any problems with high temps during actual workloads? Also, are you seeing commensurate spikes in package power during high-temperature episodes?
 

Gever

Junior Member
Jul 8, 2020
10
0
6
Did you install the AMD chipset drivers including Ryzen power profiles? Have you tried with DOCP disabled? Sometimes it can increase voltages to insane levels.
Amd chipset installed , disabling DOCP no effect im afraid..
 

Gever

Junior Member
Jul 8, 2020
10
0
6
Have you had any problems with high temps during actual workloads? Also, are you seeing commensurate spikes in package power during high-temperature episodes?
CIBEBENCH R20 about 85C
And yes im seeing power package spikes during high temp episodes
In bios CPU is 60-70C until i disable Core Performance boost then it goes down to 45C
also Power Reporting Deviation is like 130% idle +-
 

zir_blazer

Senior member
Jun 6, 2013
925
71
91
You may want to read THIS. Try to identify whenever your Motherboard is underreporting the standard telemetry value for power consumption, which would allow the Processor to consume more power than intended according to AMD guidelines and thus it would dissipate more heat (Thus higher temperatures) than average.
 

Kenmitch

Diamond Member
Oct 10, 1999
7,744
865
126
First time i applied 1 dot in center
Now after reappyling 2nd time i did an X like here:
Might be OK, but you'd really have to pop it back off and look and see if you got full coverage on the heatspreader. I'd go with the nice even coat on the entire heatspreader if I was having temp issues.

Some of those advanced Asus features cause ill effects. I usually just disable them and let the cpu work it's own magic.

The power reporting in HWiNFO64 shows some evil lurks in your uEFI settings.
 

thor23

Member
Jul 13, 2019
77
20
41
Those temps and power usage are pretty normal for Zen 2. The SOC on 3950x uses slightly more power than the 8 core chips because it has to connect to 2 CCD's.
 

Gever

Junior Member
Jul 8, 2020
10
0
6
First off, what is the ambient temp range in the room where your computer is?
About 30C , even when i open the case side pannel / ac turned on 20c, there is no much diffrence in temps / still ramping up and down and wont go idle until i use windows power saving plan


Might be OK, but you'd really have to pop it back off and look and see if you got full coverage on the heatspreader. I'd go with the nice even coat on the entire heatspreader if I was having temp issues.

Some of those advanced Asus features cause ill effects. I usually just disable them and let the cpu work it's own magic.

The power reporting in HWiNFO64 shows some evil lurks in your uEFI settings.
Can you be more specific which advanced features should i turn off ? THanks



You may want to read THIS. Try to identify whenever your Motherboard is underreporting the standard telemetry value for power consumption, which would allow the Processor to consume more power than intended according to AMD guidelines and thus it would dissipate more heat (Thus higher temperatures) than average.
Ill look into it , thanks
 

Ajay

Diamond Member
Jan 8, 2001
7,102
2,377
136
About 30C , even when i open the case side pannel / ac turned on 20c, there is no much diffrence in temps / still ramping up and down and wont go idle until i use windows power saving plan
Well, if your CPU temps don't drop going from 30C to 20C, then your cooling solution is likely the problem - most likely an issue with the thermal interface. You need a good quality TIM, full contact and good clamping force.
What cooler and TIM are you using?

Also, as @Kenmitch noted, ASUS is one of the big offenders on skewing actual senor output to get the CPU to use more current than it's supposed to.
 

Gever

Junior Member
Jul 8, 2020
10
0
6
Well, if your CPU temps don't drop going from 30C to 20C, then your cooling solution is likely the problem - most likely an issue with the thermal interface. You need a good quality TIM, full contact and good clamping force.
What cooler and TIM are you using?

Also, as @Kenmitch noted, ASUS is one of the big offenders on skewing actual senor output to get the CPU to use more current than it's supposed to.
i am using the noctua noctua nh-u12s chromax.black , ive added a second fan for push & pull setup. TIM is noctua's H1 that came with the cooler, already reapplied the heatsink , same behavior was with the stock prism cooler

Is there any way to change these asus settings in BIOS?
i've read that post from @Kenmitch , according to it, As of now, outside of certain MSI motherboards the biasing isn't end-user controllable :(
this is very frustrating...
 

Kenmitch

Diamond Member
Oct 10, 1999
7,744
865
126
Can you be more specific which advanced features should i turn off ? THanks
My son's got the Asus C6H motherboard, but I haven't played around in the uEFI lately so my memories a little rusty. If you could link or upload some images of the uEFI it would help.

I'd probably start by loading the uEFI defaults. Set up the memory manually. Loading XMP profile sometimes does other whacky things in the uEFI.

Disable Core Performance boost for starters. It probably does more harm than good when it comes to overall performance. It sounds harmless, but flips many switches in the uEFI. You can test with Cinebench on/off and compare scores and core clocks. Look at the effective clocks in HWiNFO64 during the runs.

I'd really need to see the uEFI settings to suggest anything else at this time. You should have the option in the uEFI to save screenshots onto a USB stick.

I'm running a MSI X570 motherboard so looking at my uEFI will be of no help.
 

Gever

Junior Member
Jul 8, 2020
10
0
6
My son's got the Asus C6H motherboard, but I haven't played around in the uEFI lately so my memories a little rusty. If you could link or upload some images of the uEFI it would help.

I'd probably start by loading the uEFI defaults. Set up the memory manually. Loading XMP profile sometimes does other whacky things in the uEFI.

Disable Core Performance boost for starters. It probably does more harm than good when it comes to overall performance. It sounds harmless, but flips many switches in the uEFI. You can test with Cinebench on/off and compare scores and core clocks. Look at the effective clocks in HWiNFO64 during the runs.

I'd really need to see the uEFI settings to suggest anything else at this time. You should have the option in the uEFI to save screenshots onto a USB stick.

I'm running a MSI X570 motherboard so looking at my uEFI will be of no help.
Thank you! i will post some images asap.
 

DrMrLordX

Lifer
Apr 27, 2000
16,039
4,997
136
CIBEBENCH R20 about 85C
And yes im seeing power package spikes during high temp episodes
In bios CPU is 60-70C until i disable Core Performance boost then it goes down to 45C
also Power Reporting Deviation is like 130% idle +-
Okay. What's your cooling? Your CBR20 temp is a liiiitle high but it's not problematic.

If power AND temp are spiking them something is hitting your CPU. It's actually doing work. The question is, what is it doing?
 

Gever

Junior Member
Jul 8, 2020
10
0
6
My son's got the Asus C6H motherboard, but I haven't played around in the uEFI lately so my memories a little rusty. If you could link or upload some images of the uEFI it would help.

I'd probably start by loading the uEFI defaults. Set up the memory manually. Loading XMP profile sometimes does other whacky things in the uEFI.

Disable Core Performance boost for starters. It probably does more harm than good when it comes to overall performance. It sounds harmless, but flips many switches in the uEFI. You can test with Cinebench on/off and compare scores and core clocks. Look at the effective clocks in HWiNFO64 during the runs.

I'd really need to see the uEFI settings to suggest anything else at this time. You should have the option in the uEFI to save screenshots onto a USB stick.

I'm running a MSI X570 motherboard so looking at my uEFI will be of no help.
HERE some of advanced settings, don't really know where to dig, anything i tried did nothing, disabling core performance is the only noticable change i made so far, but i'd like to find another option and let the cpu boost over 3800
 

Gever

Junior Member
Jul 8, 2020
10
0
6
My son's got the Asus C6H motherboard, but I haven't played around in the uEFI lately so my memories a little rusty. If you could link or upload some images of the uEFI it would help.

I'd probably start by loading the uEFI defaults. Set up the memory manually. Loading XMP profile sometimes does other whacky things in the uEFI.

Disable Core Performance boost for starters. It probably does more harm than good when it comes to overall performance. It sounds harmless, but flips many switches in the uEFI. You can test with Cinebench on/off and compare scores and core clocks. Look at the effective clocks in HWiNFO64 during the runs.

I'd really need to see the uEFI settings to suggest anything else at this time. You should have the option in the uEFI to save screenshots onto a USB stick.

I'm running a MSI X570 motherboard so looking at my uEFI will be of no help.
 

Attachments

UsandThem

Elite Member
Super Moderator
May 4, 2000
13,077
3,725
146
Need help with my pc (3900x / asus C7H / noctua nh-u12s push & pull setup)

Can someone explain this behavior? temps constantly jumping from 45c-70c up and down
View attachment 25231

Even in bios i get 60-65c , all settings on auto, enabled d.o.c.p , bios updated to last version (3103).

When i use windows power saving mode temps are 40-45c, but the cpu package power (SMU) is still 30W idle , any tips to reduce power draw and put all cores to sleep while idle? without using power saver mode and reducing clock speed to 2200mhz..?
I've seen THIS post and i don't understand how he achieved this

Thanks in advance and sorry for my bad english
I wouldn't worry about the temp in the BIOS. Asus seems to keep a high temperature report while there. I have a Noctua D15S, and while in the BIOS, my temps are always around 50c.

As far as the settings, I disabled PBO as it caused a good 15w higher power usage while in Windows. As far as temps going up and down, that's just how Ryzen works, and it caused my CPU fan to always ramp up and down, which was distracting. So I created a custom fan profile in the BIOS, and reduced the temperature polling to every 8 seconds I believe. That way, Ryzen does its quick boost thing and is done by the next temperature read. There was something else I changed in the BIOS, but I can't remember what it was at the moment.

20200709_183146.jpg

20200709_183201.jpg
 

thesmokingman

Platinum Member
May 6, 2010
2,230
139
106
Even in bios i get 60-65c , all settings on auto, enabled d.o.c.p , bios updated to last version (3103).
The sensor in bios displays die average btw... so 60c is beyond high. 60c+ in bios is a bad mount or other cooling issue.
 

Kenmitch

Diamond Member
Oct 10, 1999
7,744
865
126
HERE some of advanced settings, don't really know where to dig, anything i tried did nothing, disabling core performance is the only noticable change i made so far, but i'd like to find another option and let the cpu boost over 3800
For starter you need to show the settings that are under Main section. That's where you had enabled Core Performance boost I believe. You might have to screenshot, scroll down and screenshot again to get all the settings.

The sensor in bios displays die average btw... so 60c is beyond high. 60c+ in bios is a bad mount or other cooling issue.
His higher temps in the uEFI were because he enabled Core Performance Boost. Enabling D.O.C.P also did some strange things on my son's rig if I remember correctly.
 

Gever

Junior Member
Jul 8, 2020
10
0
6
For starter you need to show the settings that are under Main section. That's where you had enabled Core Performance boost I believe. You might have to screenshot, scroll down and screenshot again to get all the settings.



His higher temps in the uEFI were because he enabled Core Performance Boost. Enabling D.O.C.P also did some strange things on my son's rig if I remember correctly.
CPB is enabled by default, it wont boost over 3800mhz if i disable it

Seems like DOCP is working fine for me and is not the issue, same behavior by setting ram value manually.
 

Attachments

Hitman928

Platinum Member
Apr 15, 2012
2,595
1,831
136
CPB is enabled by default, it wont boost over 3800mhz if i disable it

Seems like DOCP is working fine for me and is not the issue, same behavior by setting ram value manually.
CPB should be on unless you want to force the CPU to strictly adhere to its TDP rating. Just make sure PBO (precision boost overclock) is off.

DOCP should be fine normally but you can try testing without it if you want.

In the BIOS the CPU has its power savings features turned off so higher temps are normal.

I would suggest to make sure all background processes are killed before trying to monitor idle behavior. Some things like Microsoft's game software (I forget what it's called, Xbox something or another maybe) , antivirus software, windows updates, or LED controller software can cause the CPU to constantly wake from sleep state. Make sure all this type of stuff is shut down and see if the behavior continues. You also might want to use Ryzen Master to monitor this because even some monitoring software can cause the CPU to wake every time it polls the CPU.
 

UsandThem

Elite Member
Super Moderator
May 4, 2000
13,077
3,725
146
CPB is enabled by default, it wont boost over 3800mhz if i disable it

Seems like DOCP is working fine for me and is not the issue, same behavior by setting ram value manually.
Did you disable PBO?

That setting caused more power and higher temps when I had it enabled.
 

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