PBO Completely Broken -MSI B650 GAMING PLUS WIFI-

Ayan

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MSI B650 GAMING PLUS WIFI BIOS : 7E26v13
AX5U6000C3016G-DCLABK (Only EXPO on)
Ryzen 7 7700

PBO is completely broken. Making even the slightest change disrupts the stability of the system.

If you change PBO settings ppt edc tdc(any value) and save and restart, cpu clock speed stuck 550mhz in windows.

If you change curve optimizer(any value) windows sutttering, usb and ethernet not working, system unstable.

The PBO section needs to be reviewed and fixed.
 
Better CPU boost speed and multi-core load with lower CPU temperature
Oh. Meanwhile I was reading an article about that, and now I don't understand. I thought, if you are limiting the values for PPT, TDC and EDC, you will lose performance.
And setting the positive offsets for max CPU Boost Clock Override will compensate this a little bit.
Now I'm confused 😆
 
Oh. Meanwhile I was reading an article about that, and now I don't understand. I thought, if you are limiting the values for PPT, TDC and EDC, you will lose performance.
And setting the positive offsets for max CPU Boost Clock Override will compensate this a little bit.
Now I'm confused 😆
You Limit them to just below what that CPU max power draw is as this will lower overall Voltage lowering Temp increasing Max Boos for single and performance on all core

Or you can go all in and lock to a set Core speed and a lower voltage that will cause less heat and better overall performance.

I have mine clocked to 5400 all-core

1702199584163.png

1702199859359.png
 
You Limit them to just below what that CPU max power draw is as this will lower overall Voltage lowering Temp increasing Max Boos for single and performance on all core

Hmm... and how do I do that?
Just by setting die limits slighty under stock?

Like...
PPT 160W
TDC 118A
EDC 178A
?

Screenshot 2023-12-10 105849.png
 
You need to work out what Max is first, The Main one is TDC as once it hits max AMP set it will start to lower voltage.

Use Hwinfo64 to montor what you max out at Set PPT to +10% of max Set EDC to +10% of max and set TDC to -5% to -10% of max

Apply a CPU voltage offset of up to -0.1000v
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1702257872203.png
 
@Alan J T

I ran CB R23.
So when I'm understanding you right. In this example I should apply following settings:

TDC 50A
PPT 86W
EDC 63A

Right?
View attachment 181752
Pretty much yes, you may need to tweak TDC a bit to get the best results Plus or Minus one AMP at a time till you get the best results for that CPU as they all differ just a bit in OC settings.
 
Pretty much yes, you may need to tweak TDC a bit to get the best results Plus or Minus one AMP at a time till you get the best results for that CPU as they all differ just a bit in OC settings.

Tried it. But Boost is gone and the cpu clock in multicore is just about 4100Mhz now.

Screenshot 2023-12-11 100016.png
 
Tried it. But Boost is gone and the cpu clock in multicore is just about 4100Mhz now.

View attachment 181763
Your boosting to over 5000 on single core loads

With a cpu temp of 53c I would say your on the right track
And since you have a R7 7800X3D it wont boost as much on Multi core as a Non X3D

You need to tweak the setting for your CPU
it took me over a week to get the setting stable for mine it not going to be done on the first attempt but need to be dialed in bit by bit.
1702304608643.png
 
Your boosting to over 5000 on single core loads

With a cpu temp of 53c I would say your on the right track
And since you have a R7 7800X3D it wont boost as much on Multi core as a Non X3D

You need to tweak the setting for your CPU
it took me over a week to get the setting stable for mine it not going to be done on the first attempt but need to be dialed in bit by bit.
View attachment 181782

Yes. Boost is normal, but multicore decreased.
I didn't thought it would be perfect in the first run. I know I have to figure out the best values. But I'm thinking, by limiting the values my Mhz are automaticly dropping, too.
You really think I'm could going to reduce my temps and still pushing the cpu to max Mhz?

Edit:
Ah… @Alan J T I forgot something. Whats the difference in offsetting the cpu core voltage and the Curve Optimizer. Are there any senergies?
 
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Yes. Boost is normal, but multicore decreased.
I didn't thought it would be perfect in the first run. I know I have to figure out the best values. But I'm thinking, by limiting the values my Mhz are automaticly dropping, too.
You really think I'm could going to reduce my temps and still pushing the cpu to max Mhz?

Edit:
Ah… @Alan J T I forgot something. Whats the difference in offsetting the cpu core voltage and the Curve Optimizer. Are there any senergies?
Use both
Set Curver offset to -30 should work with your CPU
CPU override set to positive
Set CPU override Boost to 250 ????? Not positive this is an option on the X3D chips
Voltage offset will mainly affect your the All core performance
Reduce the Voltage set to 0.0500v

AMD got pretty strict on just what OC setting could be used with the X3D chips
As far as I know no Positive setting permitted just negative only for X3D

Check Bios for a Setting called Kombo Strike,
 
Thank you @Alan J T
Sadly… setting -0.05V leads to CPU-Cache-L0-Errors with prime95


Edit:
Ok. Testing -0.0450v and allcores -20 right now.
Theres no option called Kombo Strike in my BIOS

Edit 2:
What do you mean in this sentence?
„Set CPU override Boost to 250 ????? Not positive“

What does „?????“ mean :D
And do you mean I should set the boost to -250?
Wouldn‘t I lose performance by doing this?
 
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That's good each CPU is a tad different so it is a bit of trial and error till you get the best setting for your Configuration
Hello, it's me again. With your settings, my computer runs high performance, cool and stable. No problem. But there is something I'm curious about. In the settings you posted, FCLK is 2033. Is it risky to upgrade FCLK? I tried 2100 and saw that my RAM reading and writing speeds increased. I did not encounter any stability problems. However, I am not conscious about this. If FCLK is too high, does it pose a physical risk to the hardware (such as processor or ram damage)? Or does it just affect software stability?
 
Hello, it's me again. With your settings, my computer runs high performance, cool and stable. No problem. But there is something I'm curious about. In the settings you posted, FCLK is 2033. Is it risky to upgrade FCLK? I tried 2100 and saw that my RAM reading and writing speeds increased. I did not encounter any stability problems. However, I am not conscious about this. If FCLK is too high, does it pose a physical risk to the hardware (such as processor or ram damage)? Or does it just affect software stability?
2033 is safe enough I have not tried over that. I believe up to 2100 is safe after that you may get boot fail
 
2033 is safe enough I have not tried over that. I believe up to 2100 is safe after that you may get boot fail
Thank you for the answer. I did not encounter any errors with the 2100. But I wonder if it will cause physical damage to the computer hardware? When FCLK increases, does the voltage of something increase? Will it harm the processor or ram?
 
Thank you for the answer. I did not encounter any errors with the 2100. But I wonder if it will cause physical damage to the computer hardware? When FCLK increases, does the voltage of something increase? Will it harm the processor or ram?
No, it should not increase voltage for more info watch
 
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