Need help Undervolting a 9900X CPU

[wade7575]

I just purchased an ASUS X870E ProArt AMD 9900X CPU G.Skill DDR5 6000mhz CL30 32GB Ram and I have never Overclocked or Undervolted any CPU before,I have built plenty of systems just never messed around with Undervolting.

I watched a few youtube video's and one guy said you can Ryzen Master and just go to manual mode and set the boost speed to whatever your CPU's max boost speed is which mine is 5.6ghz,everytime I run the test with stock voltage my systems crash's.
I don't think I have any bad Hardware because I can run Cinebench and my system doesn't crash at all,my system crash's after 15 to 20 seconds of running Ryzen Master.

I was told that Ryzen Master isn't the greatest software and I'm inclined to believe the person that told me,he told me just to enter the numbers in the bios and then run Cinebench Prime95 and OCCT and just keep lowering the voltage of the CPU until it makes the CPU unstable then go back to the stable voltage it ran on without crashing.

All I want to do is to just lower my CPU's temps by Undervolting I don't care about getting anymore higher boost speeds the CPU is more then fast enough for me at 5.6ghz,I mainly just video encode a lot and use other video editing software.

Can anyone tell me the right way to Undervolt a 9900X CPU and also if I will have to use the Curve Shaper or Curve Optimizer.

My stock CPU voltage is 1.35 and I understand to enter 1.345 and then 1.34 and so on into the bios until my CPU can't run stable and then give it back some voltage until it does run stable.

I just don't know about Curve Shaper and Curve Optimizer and if I need to use them at all to keep my system running stable as well,if I do need to make changes to them as well can someone tell me what needs to be done,one guy told me that you Undervolt the CPU first then you adjust the Curve and then another guy said oh no that's wrong and another guy said you adjust both at the same time,and another guy said you just Undervolt the CPU cores and that's it no need to touch that other stuff.

@8 Pack I seen your video about the 9950X can you help me please.

 

[wade7575]

To anyone trying to help me please don't tell me how to Undervolt so I get lower temps and then I can set my boost clock higher,I just want to focus on making my system run as cool as I can with my Noctua NH-D15 G2 cooler and I don't care about the little bit of extra speed I can pick up.

Also my Idle temps are 40C to 43C and when running Cinebench they go to 71C to 73C and stay at 71C to 72C for most of the test.
Running Handbrake my temps are 65C to 66C

 

[Mcnumpty2323]

Those temperatures are perfectly fine
You're not even close to max
Which I think might be 95c on that cpu
Though my memory isn't always right lol

 

[wade7575]

Those temperatures are perfectly fine
You're not even close to max
Which I think might be 95c on that cpu
Though my memory isn't always right lol

I understand my temps are fairly low but I would still like to get the voltage down more,I'm in Canada and it get's very humid here at times and it's Fall here right now and the temps are lower,I want to be ready for summer when the real heat starts.

 

[Mcnumpty2323]

I understand my temps are fairly low but I would still like to get the voltage down more,I'm in Canada and it get's very humid here at times and it's Fall here right now and the temps are lower,I want to be ready for summer when the real heat starts.

I have a 5950x
So can't guarantee the same works for 7xxx and 9xxx cpus
But tweaking ppt,edc,tdc lowers my temperature
More than tweaking voltage will
Those reduce the power sent to cpu
Other option see if there's an eco mode for your cpu

Though like I said your miles below max
Even in summer you might still be OK
But you could make a separate bios profile
And switch to it if becomes necessary in summer

Edit
Your motherboard bios may have power settings
That go from eco then various stages to max
Rather than just eco and max

 

[wade7575]

To lower the CPU voltage, it is better to use BIOS rather than Ryzen Master. Start with a small reduction of the normal voltage (e.g. from 1.35 to 1.345) and check the stability through tests like Cinebench or Prime95. If the system remains stable, you can lower more.
Curve Optimizer is a useful tool, but it's better to work with the main voltage first. If the goal is just to lower the temperature, lower the voltage in stages and test. Curve Optimizer can be set up later for additional fine tuning.

I was planning on not using Ryzen Master and just entering stuff in the bios,with Curve Optimizer is that where you set a negative offset also if that is the case how do you when to stop will the system want to run unstable again.

I understand how to add my max 5.6ghz into the bios if I do not want my CPU to boost higher and use more power and also generate more heat.

 

[wade7575]

If you plan to use Curve Optimizer, start with a small negative offset in the BIOS and test the system. Once the system becomes unstable, go back up one value for stability. If you don't want the processor to overclock above 5.6 GHz, lock that value and limit power consumption to control heat dissipation.

I will give all of that a try and thanks for the help.

 

[Tetras]

All I want to do is to just lower my CPU's temps by Undervolting I don't care about getting anymore higher boost speeds the CPU is more then fast enough for me at 5.6ghz,I mainly just video encode a lot and use other video editing software.

Can anyone tell me the right way to Undervolt a 9900X CPU and also if I will have to use the Curve Shaper or Curve Optimizer.

The simplest way to contain your long run temperature is to use (65 watt) eco mode, though the performance loss would depend on your CPU. You would lose less performance by using the curve optimiser, but as said, you need to limit the power consumption too, or you'll be increasing the boost envelope.

 

[Mcnumpty2323]

Yep like i said eco modes simplest solution
Though a bit extreme given their temperatures are perfectly good
Playing with voltage and curves can be time consuming
And frustrating
think its great under stress test
then do something else and it crashes
And it's a pro art board so it's decent
So may have bios options between 65w eco mode
And full wattage
65w may lose too much performance
But if the bios has several stages of watts
Somewhere in between eco and full wattage would be ideal

Though I still think their temperatures are perfectly OK
Even factoring for when summer comes
Might well still be OK

 

[Tetras]

Which I think might be 95c on that cpu

Though I still think their temperatures are perfectly OK
Even factoring for when summer comes
Might well still be OK

Yeah, those temps sound more than fine to me too, 70c region in Cinebench is excellent.

My standard links for new Ryzen users freaked out about high temps:

Ryzen 7000 Series Processors: Let's Talk About Power, Temperature, and Performance

At AMD, we’re extremely proud of what our engineers accomplished with the new Ryzen 7000 series processors and platform from all angles. Whether it’s performance, efficiency, or longevity, this is just a killer processor. But to push the boundaries, you have to break convention sometimes, and...

community.amd.com

 

[Mcnumpty2323]

Yeah, those temps sound more than fine to me too, 70c region in Cinebench is excellent.

My standard links for new Ryzen users freaked out about high temps:

Ryzen 7000 Series Processors: Let's Talk About Power, Temperature, and Performance

At AMD, we’re extremely proud of what our engineers accomplished with the new Ryzen 7000 series processors and platform from all angles. Whether it’s performance, efficiency, or longevity, this is just a killer processor. But to push the boundaries, you have to break convention sometimes, and...

community.amd.com

Interesting video
Though he's actually an intel engineer
Not amd lol
But yeah the fundamentals are the same

 

[wookiee87]

If you want to undervolt then you will have to drop the core frequency back a couple of hundred MHz, I would say it's been tuned at 1.35v from the factory to be the lowest voltage to get the 5.6ghz boost clock, but as others above have stated your temperatures at idle and heavy CPU load are actually very very good, there is nothing to worry about at all, I would stop trying to undervolt and enjoy a fast, cool stable CPU.

 

[wade7575]

@aalex I got feeling under the weather and I went to Undervolt my CPU today and for whatever the reason I can not find where in the bios where you lower he CPU's voltage that's going to the core,I don't know if I have to enable or disable a setting to open up a menu what it is that I need to do or look for.

The MSI mobo's are extremely straight forward for sure I would love to know why ASUS mobo's aren't.

Do you happen to know where to do this on an ASUS mobo I have tried watching a ton of video's on Undervolting and non of them show anything about ASUS mobo's just MSI and and Gigabyte from what I can find.

My mobo is an X870E ProArt

 

[Mcnumpty2323]

@aalex I got feeling under the weather and I went to Undervolt my CPU today and for whatever the reason I can not find where in the bios where you lower he CPU's voltage that's going to the core,I don't know if I have to enable or disable a setting to open up a menu what it is that I need to do or look for.

The MSI mobo's are extremely straight forward for sure I would love to know why ASUS mobo's aren't.

Do you happen to know where to do this on an ASUS mobo I have tried watching a ton of video's on Undervolting and non of them show anything about ASUS mobo's just MSI and and Gigabyte from what I can find.

My mobo is an X870E ProArt

Is the bios on easy mode?
Might need to switch to advanced mode
If it is
Possibly F6 key when in bios

Don't actually remember probably advanced cpu settings
But my motherboard is all singing and dancing
There's about 3 sections dedicated to Overclocking
Even settings for liquid nitrogen

 

[wade7575]

I figured out the problem and the problem is I'm an idiot,it was under AI Tweaker and all had to do is scroll down farther and I forgot you could scroll down in the bios.

 

[Mcnumpty2323]

I am saying nothing
I have plenty of DOH! Moments lol
My excuse is old age
And medications though lol

 

[wade7575]

@Mcnumpty2323 I noticed on my bios I had to move a jumper so I can change voltage's.

I was wondering one thing so I'm certain I'm adjusting the right thing,I first Enabled Extreme Over Voltage because it say's it has to be.

I'm fairly certain I need to change the voltage by lowering with what's called CPU Core Voltage,is it CPU Core Voltage that I need to adjust and enter the lower voltage value there to undervolt the CPU.

I just don't want to do a bunch of tests only to find out I was adjusting the wrong thing.

​

 

[Nitefly]

@Mcnumpty2323 I noticed on my bios I had to move a jumper so I can change voltage's.

I was wondering one thing so I'm certain I'm adjusting the right thing,I first Enabled Extreme Over Voltage because it say's it has to be.

I'm fairly certain I need to change the voltage by lowering with what's called CPU Core Voltage,is it CPU Core Voltage that I need to adjust and enter the lower voltage value there to undervolt the CPU.

I just don't want to do a bunch of tests only to find out I was adjusting the wrong thing.

​

Have a look at the final part of this vid from 3:00 (I’ve tried to link to that part of the vid).

If you want to keep using PBO but just have less voltage then yes, you do want to reduce that setting but by setting an ‘negative offset’ rather than fixing a value.

This vid is for a 5950x but I assume it’s the same principle for a 5950x.

Also, that’s one approach to undervolting. The other approach is by setting a fixed clock speed (which is dealt with in the first part of the vid… but it needs a different sort of tweak). What I’ve linked to is the simplest way of doing an under-volt, as far as I know.

Watch the whole vid I guess

 

[Mcnumpty2323]

@Mcnumpty2323 I noticed on my bios I had to move a jumper so I can change voltage's.

I was wondering one thing so I'm certain I'm adjusting the right thing,I first Enabled Extreme Over Voltage because it say's it has to be.

I'm fairly certain I need to change the voltage by lowering with what's called CPU Core Voltage,is it CPU Core Voltage that I need to adjust and enter the lower voltage value there to undervolt the CPU.

I just don't want to do a bunch of tests only to find out I was adjusting the wrong thing.

​

As mentioned there's multiple ways to achieve it
My personal method is play with edc,ppt etc
So you're lowering the power supplied to the cpu
Less voltage,ampage should give better results
Plus this method has proven more stable for me anyway
Setting negative pbo and lowering cpu voltage
I found time consuming
And more likely to crash