Question CPU and PBO question

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NiaD

NiaD

Jun 13, 2021
44
1
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Hi,

I have some questions to make
First of all my rig Is the following:

5900x
Asus ws x570
32gb 3600Mhz 16
2080ti
850w evga G3
2tb SSD nvme 4.0
Noctua NDH15

I have installed recently the 5900x and when I First installed It the GPU led on the mobo was on and It Will not post, After I unplugged the computer and restarted It all went fine. Why this happened?

So next step I Ve done some prime 95 to check temp and stability, runned for two hours all was fine, CPU max temp was 80C, but I noticed that the clock was only 4GHz or 3.5GHz on all cores, why that? Shouldn't be 4.6GHz ish?

I enabled PBO, but didn't check the clocks on the cores, but the temp fine as fare as 95C was this normal?
 
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Also I was testing again CPU and GPU temp


Running furmark and prime together for 10min I got

70c GPU 84c hotspot temp
84.3 max 80 AVG CPU at 4GHz


I think they are not that bad
 
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Know I don't understand what Is happening.

I was trying to play rust, before was 63C now Is 80C at 16% usage as when I stress It at 100% with prime 95
What is happening, also now My GPU Is making coil whine and I Heard a strange sound as like a cable went through a fan but It never did.

Someone has thoughts about this behaviour?
 
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COLGeek said:
When you installed the new CPU, did you also install new thermal compound between the CPU and cooler? Are you certain you tightened the CPU cooler all the way?
Click to expand...

Yup, for sure.

I should use average or tcdil die? Or directly ryzen master for temp?

The fact that I do not understand Is that under stress test It does 80c at 100% when I play 16% 80C something Is wrong
 
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When you play a game it usually only boosts active cores.
So when gaming you have (16%) one core boosting to max PBO for your motherboard/CPU setup.
So it is not at all uncommon for the one highly boosted/high voltage core to run 80c.
Most software only report the highest sensor reading. Ryzen CPUs have many sensors throughout the CPU die and IO Die.
So they report the highest temp. One core maxed out on PBO can give the same temp reading as all cores at lower clock speeds and voltages.
 
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Unolocogringo said:
When you play a game it usually only boosts active cores.
So when gaming you have (16%) one core boosting to max PBO for your motherboard/CPU setup.
So it is not at all uncommon for the one highly boosted/high voltage core to run 80c.
Most software only report the highest sensor reading. Ryzen CPUs have many sensors throughout the CPU die and IO Die.
So they report the highest temp. One core maxed out on PBO can give the same temp reading as all cores at lower clock speeds and voltages.
Click to expand...

But before It was at a normal temp.

In rust I should do 63C not 80C for no reason
I think Is something software related, so now I am resetting the machine.
What program do you suggest to monitor temp of CPU and GPU?
I have an nzxt h510i case with all' noctua fans installed.
I am really frustrating about this things because I dont know what are the things that are causing this.
Also I Ve Heard that strange noise from the case that Is freaking me out
 
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If you look at this graph( made by one on our forum members Ecky) wattage comsumed rises greatly with clock speed.
https://imgur.com/mMBmP2A
View: https://imgur.com/mMBmP2A

Full thread here.

TDP vs Total power consumption?

Hey, i have a I5-4590, on intels website it says "TDP:84w" i've read some information regarding cpu power consumption and i know that tdp does not equal total power consumption, but is it at least close to it's maximum power consumption? There was an article on toms that showed the I5 going as...
forums.tomshardware.com forums.tomshardware.com
 
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Not the best cooling case to have.
Intake airflow is severely restricted with a solid panel front and intake on one side with a strip of holes.
Your front intake fans are probably doing about 1/3 of their normal air flow rating.
Open the side panel and run your stress test.
Check temperatures and fan speeds with it closed and open.
If open gives more than a couple degrees difference in temps. You need better fans or a better cooling case.
 
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According to AMD max boost clock for 1 core is 4.8GHz, as for an all clock max freceuncy that will vary on the work you put them to do and the cooling solution you are using. Prime 95 is avery hard task and soo its very posible the clocks wont boost as high as if for example you were trying Cinebench R20. (https://www.amd.com/en/products/cpu/amd-ryzen-9-5900x)

As for the temperatures, the NDH15 is a fantastic piece of cooling design, probably the best tower cooler out there. But you have to keep in mind the Ryzen 5 5900X have 12 cores and 24 threads. What I mean with this is, if your room temp are not winter cold, and/or your case is not getting enough fresh air in and removing enough hot air (you can have 7 noctua fans but that alone does not mean it will create a good airflow) then the temps are not going to be great.

If youre 100% sure the Noctua cooler is well installed, then my first test will be to open the side panel of the system and to use it like that while reading the temps values. If the temps get better, then the case is not well ventilated. If the temperature remains the same then 1. Your cooling solution is not enough, or 2. Your cooling solution have an issue (bad installtion for example).

Another thing to try, and before even talking about high or low temps, Whats your idle temp?, Idle means, turn on the PC open your monitoring software, and let go the mouse and keyboard for atleast 20 mins, don't do nothing, just let stay on the desktop (of course avoid sleeping and/or hibernation to happen). After 20 mins whats the temp reading?
 
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On my Asus Prime X570p the default" Optimized defaults" pump way too much voltage to my 3600 with pbo enabled.
It boosted voltage to 1.45-1.5v for 4.2ghz boost on 1 or 2 cores. 6 core boost dropped to 3.9ghz.
After turning off PBO and all "Optimized defaults my chip now runs 4.4 all core boost at 1.28v. And runs 10c cooler @ 4.4all core boost not 1 or 2 @4.2.
It took a lot of reading and trial and error to learn the new Ryzen tweeks and quirks.
 
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Unolocogringo said:
On my Asus Prime X570p the default" Optimized defaults" pump way too much voltage to my 3600 with pbo enabled.
It boosted voltage to 1.45-1.5v for 4.2ghz boost on 1 or 2 cores. 6 core boost dropped to 3.9ghz.
After turning off PBO and all "Optimized defaults my chip now runs 4.4 all core boost at 1.28v. And runs 10c cooler @ 4.4all core boost not 1 or 2 @4.2.
It took a lot of reading and trial and error to learn the new Ryzen tweeks and quirks.
Click to expand...

Yeap, we all had to learn a thing or two with Ryzen :)
 
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RodroX said:
According to AMD max boost clock for 1 core is 4.8GHz, as for an all clock max freceuncy that will vary on the work you put them to do and the cooling solution you are using. Prime 95 is avery hard task and soo its very posible the clocks wont boost as high as if for example you were trying Cinebench R20. (https://www.amd.com/en/products/cpu/amd-ryzen-9-5900x)

As for the temperatures, the NDH15 is a fantastic piece of cooling design, probably the best tower cooler out there. But you have to keep in mind the Ryzen 5 5900X have 12 cores and 24 threads. What I mean with this is, if your room temp are not winter cold, and/or your case is not getting enough fresh air in and removing enough hot air (you can have 7 noctua fans but that alone does not mean it will create a good airflow) then the temps are not going to be great.

If youre 100% sure the Noctua cooler is well installed, then my first test will be to open the side panel of the system and to use it like that while reading the temps values. If the temps get better, then the case is not well ventilated. If the temperature remains the same then 1. Your cooling solution is not enough, or 2. Your cooling solution have an issue (bad installtion for example).

Another thing to try, and before even talking about high or low temps, Whats your idle temp?, Idle means, turn on the PC open your monitoring software, and let go the mouse and keyboard for atleast 20 mins, don't do nothing, just let stay on the desktop (of course avoid sleeping and/or hibernation to happen). After 20 mins whats the temp reading?
Click to expand...


My idle temp is 42/41C for ryzen master. So I am sure that the cooler Is perfectly fine.
As for the side panel Ill try right now, of I see some changes Ill buy another case.

In game the CPU boost fine

My ambient temp Is 30C but now I Ve bought a AC unit so this Will be lowered
 
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Now I Ve finished a clean install of Windows and the temp in rust Is 65/70C pretty good.
The problem Is that the CPU also skyrocket in 2S at 81C and then back down
 
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It is normal for Ryzen to quickly boost and temps rise for a short amount of time. This finishes the task quicker and allows the processor to fall back to a lower boost / power state to save power/ energy in the long run.
Get up, do your job as fast as possible, and them go back to rest state until needed again.
Ryzen does not act at all like Intel, AMD FX or Phenom processors. So it will take a while to get accustomed to how they react.
 
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