Question 5800X3D PBO work around

[WelshBloke]

So I just got an 5800X3D and I was a little shocked at how hot and throttley it was and theres no PBO settings for the X3d chip (at least not on my MB, I know a few new BIOS revisions are coming out with it).

Anywhoo theres a simple little program a guy wrote that helps massivly with all core clock speeds on this cpu.

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

This dropped my temps and let me hit the boost ceiling for all cores and single cores! Its well worth a go if your MB doesnt yet hae PBO2 support.

This for testing....

Releases · sp00n/corecycler

Stability test script for PBO & Curve Optimizer stability testing on AMD Ryzen processors - sp00n/corecycler

github.com

 

[Makaveli]

Which board and bios version are you on?

 

[WelshBloke]

Which board and bios version are you on?

Running an Asus x470 prime pro with bios 6063.

Is this not working for you? I found a massive difference. I'm running a -30 offset right now but it seems stable at -50, but there were no massive gains after -30. (Maybe a little drop in temp but I didn't have time to test it at those values)

 

[Grooveriding]

I have this option in my BIOS. Run all the cores at -30. Made a big difference in temperatures. About 8C lower.

 

[WelshBloke]

I have this option in my BIOS. Run all the cores at -30. Made a big difference in temperatures. About 8C lower.

Yeah I wish Asus would release a bios with it in for my MB. Still this works, bit of a pain when I get my Linux install going again though.

 

[Shamrock]

I have it in my ASUS ROG STRIX X570-E GAMING WIFI II

 

[WelshBloke]

I have it in my ASUS ROG STRIX X570-E GAMING WIFI II

I'm guessing that ASUS have prioritised the newer gen AM4 motherboards. Kinda understandable but still a little disappointing as it obviously works well on X470 boards at least.

 

[WelshBloke]

I didn't really see any drop in temperature until I got to -30. My CPU just used all the headroom it had and boosted until it hit 90c under full load.
So up to -25 it stayed at 90c but boosted higher and longer, then when I hit -30 it stopped boosting higher and started dropping temps.
Which is (as I understand it) exactly what PBO2 is supposed to do but it was fun to see it happen so explicitly. I'm looking forward to having enough time to test the higher PBO2 levels. Core cycler is stable overnight at -30 so I'll be happy with that anyway.

 

[PJVol]

So I just got an 5800X3D and I was a little shocked at how hot and throttley it was and theres no PBO settings for the X3d chip (at least not on my MB, I know a few new BIOS revisions are coming out with it).
Anywhoo theres a simple little program a guy wrote that helps massivly with all core clock speeds on this cpu.

Yeah, I was curious what was behind that weird decision to not expose at least curve adjusting in BIOS initially for the X3D parts. Anyway glad it helps.

 

[Makaveli]

I just picked up one of these today.

 

[WelshBloke]

I just picked up one of these today.

View attachment 78931

View attachment 78932

What motherboard do you have?

 

[Makaveli]

What motherboard do you have?

Asus Prime X570- Pro

 

[WelshBloke]

Asus Prime X570- Pro

You should have native PBO2 support in the bios then! 👍

 

[Makaveli]

You should have native PBO2 support in the bios then! 👍

So I installed the chip today if I go to the advanced menu AMD overclocking is grayed out


However in the AI Tweaker menu its available PBO is there.


Then CO

 

[Motostu]

Yep, the latest Asus BIOS for their X570 boards (and some other brands) lets you set CO offsets. I used the PBO2 tuner in Windows to find my stable per-core offsets, then set them in the BIOS. No issues, and it's nice not having to have a script set them every time Windows starts.

 

[Makaveli]

Yep, the latest Asus BIOS for their X570 boards (and some other brands) lets you set CO offsets. I used the PBO2 tuner in Windows to find my stable per-core offsets, then set them in the BIOS. No issues, and it's nice not having to have a script set them every time Windows starts.

true but is WelshBloke seeing this other menu in his x470 bios is the question.

Right now i've set -20 per core but haven't had time to do per core tuning like I did on my 5800X.

 

[Motostu]

Ahh, got it. Would be nice to see older boards get the same update.

 

[WelshBloke]

true but is WelshBloke seeing this other menu in his x470 bios is the question.

Right now i've set -20 per core but haven't had time to do per core tuning like I did on my 5800X.

I get the first menu but not the second. I did get the second menu when I had a 5900X in the board.

 

[WelshBloke]

Ahh, got it. Would be nice to see older boards get the same update.

Yeah. Theres no reason not to put it in as the function is obviously there if you can set it in Windows!