[SOLVED] PBO 5 3600

[OfficialKapn]

Hi everyone,
So I'm about to use PBO, I enabled it and set max CPU boost clock override to 200mhz.
But what about PBO scalar, what is that and what to with it?

Specs:
5 3600
Asus ROG x570 E-Gaming
Deepcool castle 360 rgb

Thanks

 

[CountMike]

Hi everyone,
So I'm about to use PBO, I enabled it and set max CPU boost clock override to 200mhz.
But what about PBO scalar, what is that and what to with it?

Specs:
5 3600
Asus ROG x570 E-Gaming
Deepcool castle 360 rgb

Thanks

In my BIOS there's 10 and I keep it at that.

 

[drea.drechsler]

Hi everyone,
So I'm about to use PBO, I enabled it and set max CPU boost clock override to 200mhz.
But what about PBO scalar, what is that and what to with it?

As I've understood it... PBO Scalar relates to how long the VCore should be held elevated when the CPU is boosting; higher scalar values result in a longer hold-up.

If this is correct, I can see that it should be used judiciously. What I think happens is that while it can help the core hold a boost clock longer, it also generates more heat. The result being, as time goes on it should be less likely to boost to as high as the CPU warms more since the boosting algorithm sees less thermal headroom. Of course that's going to happen anyway but it could hasten the time until it starts reducing it's boosts.

But also, if your motherboard's CPU core voltage tends to have a lot of v-droop (poor LLC) then this could help because if voltage isn't high enough it also won't boost as high as needed to sustain the boost. In that case it would lower the boost frequency to maintain stability as the voltage sags some from the initial boost.

This is all conjecture of course. Nobody has solid concrete information on all this as AMD keeps this stuff very close... even theStilt hasn't talked about it that much. And also, so far anything PBO has very limited effect with Ryzen 3000 compared to the effect on Ryzen 2000. So it may actually have no effect.

Also, the CPU boost clock over-ride isn't reliable. On my board it actually makes my CPU boost less when I use it, if I set it to a high value (200Mhz) it will crash when I start any load. So be sure to test with and without to see what it does.

 

[CountMike]

Yeah, AMD is not very forthcoming with details and MB manufacturers even less so. Will see what gives when new AGESA comes next month, my BIOS is a bit of a mess, some things duplicated and some not doing anything. Not any better with other ones either. Thing is, that promised boost clocks are now reality but can it work better than that is question.