Performance issues with PBO set manually

[Osmane888]

I recently bought a Ryzen 7 7700 with an Asrock B650 Steel Legend Wifi and the 32gb Corsair Vengeance 6000mhz ram kit and built it couple of days ago. Because i already did some tweaking with my previous cpu (a 5800x) i wanted to do some PBO tweaking as well as Curve optimizer but it seems like my system gets SUPER slow whenever i set any PBO value manually in Bios.

When i set the PBO on motherboard limit or on Auto the system seems to perform normally (and with motherboard limit i get much better perf in games) but whenever i try to set it myself the pc gets extremely slow, like windows taking a good minute to boot with the mobo logo, then another windows wheel then i finally get to the user interface but everything is super laggy and slow. I'm also using Windows 11 24h2, i wanted to install 23h2 with a clean install but the image i had on my USB stick wasn't update to date unfortunately.

Right now i'm a bit concerned about my motherboard or the cpu, i hope it's not a physical defect because that would mean i wouldn't have a computer for days if i have to return it and i'll have to redownload everything on my slow internet bandwidth...

[WereCat]

Why touch anything besides curve optimizer? Have you reduced your PPT?

[PDifolco]

What are the values you enter ?

[Sawa Takahashi]

58 minutes ago, Osmane888 said:

I recently bought a Ryzen 7 7700

What is your goal by activating PBO ?

An overclocked 7700 won't make a noticeable difference in your computer for day-to-day use. Unless you are running some critical process that requires all the seconds you can shave of (I don't know if something like that exist for home computers), you are simply toying with the longevity of your computer.

Good luck !

[TatamiMatt]

1 minute ago, Sawa Takahashi said:

What is your goal by activating PBO ?

An overclocked 7700 won't make a noticeable difference in your computer for day-to-day use. Unless you are running some critical process that requires all the seconds you can shave of (I don't know if something like that exist for home computers), you are simply toying with the longevity of your computer.

Good luck !

Running PBO has no effect on the longevity of a CPU as it is well within parameters and it is designed to be run with, and should be run for the performance advertised. Its overclocking it beyond PBO limits that may affect longevity

[Sawa Takahashi]

17 minutes ago, TatamiMatt said:

Its overclocking it beyond PBO limits that may affect longevity

There is always a downside (or PBO would be enabled by default).

[Osmane888]

1 hour ago, WereCat said:

Why touch anything besides curve optimizer? Have you reduced your PPT?

I wanted to set the PPT to 100, because it gets too high with Motherboard limits but the auto setting set it too low (88w) and it looks like i'm losing a lot of performance. In Cinebench R23 i go from 18400(more or less) with PBO on auto vs 19100 with pbo on motherboard limit. So i wanted to set the limit to 100 or 110 to get extra performance without increase temps too much

[Osmane888]

1 hour ago, PDifolco said:

What are the values you enter ?

I tried PPT = 100, TDC = 75 and EDC = 120, so the same as pbo auto just to see if it works.

[freeagent]

The curve responds well to extended power limits. To get these CPU's to perform, you need to tune your curve to your power limits, not the other way around.

 

[Osmane888]

1 hour ago, freeagent said:

The curve responds well to extended power limits. To get these CPU's to perform, you need to tune your curve to your power limits, not the other way around.

 

So if i understand well, i should leave PBO on auto and tweak curve optimizer ?

[Osmane888]

I think i know what's happening, or at least a part of it. Setting pbo manually will somehow make the cpu run at less than 600mhz no matter what, even if i set the scalar to x1. I'm gonna contact asrock because it doesn't look normal

[TatamiMatt]

9 hours ago, Osmane888 said:

I think i know what's happening, or at least a part of it. Setting pbo manually will somehow make the cpu run at less than 600mhz no matter what, even if i set the scalar to x1. I'm gonna contact asrock because it doesn't look normal

 

13 hours ago, Osmane888 said:

So if i understand well, i should leave PBO on auto and tweak curve optimizer ?

Have you tried this first?

[Osmane888]

4 hours ago, TatamiMatt said:

 

Have you tried this first?

Not yet, i wanted to tweak the consumption a bit to get more performance while keeping temps under control because the cpu seems to perform A LOT better with motherboard limits but heats too much for my taste, it doesn't overheat but i don't like to see it reach 85c whenever it gets fully utilized.

[Osmane888]

Well i found out what was the problem and it was all my fault.

 

Previously i had an Asus ROG Strix B550-F Wifi and setting values for PBO was in a format like so = PPT: 142, TDC: 110, EDC: 120. So i wrongfully thought this was the universal format for the values but it's not. In the asrock motherboard the values should be written in mA, mW, mV so it would be  = PPT: 142000, TDC: 110000, EDC: 120000 (for example).