Precision Boost 2 and Precision Boost Overdrive

[Relentless81]

Can someone please clarify this for me it's driving me nuts

I'm looking at a 2600X, I'm not manually OCing, I'm thinking pairing it with an MSI Tomahawk or Pro Carbon but read that PBO doesn't work too well on these boards.

Have I got the following right

PB2 is a default feature for all core boost so a 2600X will all core boost to 4.0ghz with default settings, no messing around it's just standard

PBO is an additional feature that needs to be enabled that pushes the ranges of PB2 even further over and above 4.0ghz in the case of the example of a 2600X

So basically I wouldn't care for PBO because it's a form of OCing?

I also read that PBO was 2nd gen Threadripper only but there's loads of talk about it working on X series Ryzen 2 CPU too

If anyone who understands this better than me be could clarify I would appreciate it

Thanks

 

[Relentless81]

Thanks for the info, as long I was right in thinking PB2 is default and 4ghz out of the box I'm not really bothered about PBO

I'm not sure I understand why the MSI boards are stated to not support PBO very well though, will this affect PB2 on an MSI board?

Depending on what you read it's only the MSI boards that struggle with it

 

[Relentless81]

Just leave it all auto, enabling pbo on my taichi does increase the clock speeds a bit, but the vcore went higher than I was comfortable with. Difference in performance in gaming was negligible.

But your still getting the full use of PB2 right? What I'm asking is, in the case of the MSI Pro Carbon and Tomahawk, if they aren't recommend to use with PBO which I've read multiple times, how does it affect PB2 on those boards? Maybe they don't hold all core boost for quite as long as some other boards

 

[Relentless81]

FWIW Precision Boost Overdrive can be thought of as doing the same thing people do when they increase the thermal & power targets on GPUs, you're basically giving PB2/XFR2 more headroom.

For example, PB2/XFR2 will keep increasing the clock speed of individual cores until it reaches either X degrees or Y voltage, PBO basically increase those limits by a certain amount (i can't remember by how much)

Yeah but the way I've started to think of it is PB2/XFR2 is capped, PBO just kind of basically removes that cap

Negative Offset, I think thats whats missing from the MSI boards, is that just an OC feature and doesnt affect PB2?

 

[Relentless81]

Cheers for the informative posts everyone, there is lot of misinformation on the internet I think people get PBO and PB2 confused

I'm not interested in PBO, I simply want the best board that will maintain the PB2 and XFR2 for the longest but also use the 3200 XMP of my RAM

My previous B350 Gigabyte ran the XMP no issues what so ever so I'm tempted by another gigabyte board but the MSI seems better specced, any thoughts on this?

just to clear up any misconceptions.
you were right to say that MSI wasn't good for PBO - if you said this in november 2018. As of december 2018, they've released their latest bios which does support negative offset voltages.
this negative offset voltage was the only thing holding back their motherboards - as their VRM implementation is the best for the B450 series.
hence, there's no reason now, not to get the MSI boards, except for petty reasons, such as "oooh i don't like MSI"

How is the RMA process for MSI compared to Gigabyte?