BIOS 0705 Limiting boost speeds of 7950x on Crosshair X670E Hero Board

[Punster]

I've been using the ASUS ROG X670 Hero with the, AMD 7950X, G.Skill 6000Mhz CL30 DDR5, ASUS ROG RTX 4090 and Corsair H150i. Have had really bad issues with it, used 0705 since build, 0801 seemed to fix stuttering and doubled my memory controller speed from 1500mhz to 3000mhz. I also seem to be more stable at stock or basic PBO enabled setting too.

[Soupladel]

Hi Soupladel,
Thank you for your reply.
I'll consult our tech team more about it.

I don't suppose you have any update on this?

[zekkragnos]

I've been using the ASUS ROG X670 Hero with the, AMD 7950X, G.Skill 6000Mhz CL30 DDR5, ASUS ROG RTX 4090 and Corsair H150i. Have had really bad issues with it, used 0705 since build, 0801 seemed to fix stuttering and doubled my memory controller speed from 1500mhz to 3000mhz. I also seem to be more stable at stock or basic PBO enabled setting too.

Where is this version 0801? I don't see it on the ASUS website?

[Soupladel]

Where is this version 0801? I don't see it on the ASUS website?

it is/was a test version of the BIOSavailable from here:

https://rog.asus.com/forum/showthrea...-X670-resource

but you need to be aware these are probably to be considered a grade below even a beta BIOS and the thread has now been updated to include 0802 version

[STARRAIN@ROG]

Hi Soupladel,
Sorry the issue still under investigation.
I'll keep you updated if there is any news.
Thank you.

[Soupladel]

Hi Soupladel,
Sorry the issue still under investigation.
I'll keep you updated if there is any news.
Thank you.

No worries, if you need anything else let me know.

I have just moved onto the test BIOS 0803 and the problem boosting behaviour is still there

[Braegnok]

As per title, earlier revisions of the BIOS for my motherboard had my CPU boosting as high as 5.75 which from everything i have seen to date is normal behaviour for the CPU.

However, ever since 0705 the boosting behaviour of the CPU is now limited to 5.5Ghz on all cores, as in no single core will boost higher than this other than occasionally core 0.

So my question of support is this: is this expected behaviour for the combination of the 7950x, Crosshair X670E Hero motherboard and BIOS revision 0705?

i know this is a new platform and there are going to be some teething issues, but i am trying to establish if this is something that will change with later BIOS revisions or whether this is because there is an issue with my CPU and/or motherboard which is being detected by the BIOS and therefore limiting the boost frequencies?

Hello Soupladel,

AGESA 1003 from OCT 2022,.. re-introduces Precision Boost C-State Boost Limiter which prevents boosting to over 5.5 GHz when more than 4 cores are active.

Work around till BIOS update for now is,.. You need to run 0611 BIOS with AGESA 1002, confirm Global C-state Control is Enabled.

This guide from SkatterBencher sheds more light on the Precision Boost C-state Boost limiter : https://skatterbencher.com/2022/10/2...e-boost-limit/

[Soupladel]

Hello Soupladel,

AGESA 1003 from OCT 2022,.. re-introduces Precision Boost C-State Boost Limiter which prevents boosting to over 5.5 GHz when more than 4 cores are active.

Work around till BIOS update for now is,.. You need to run 0611 BIOS with AGESA 1002, confirm Global C-state Control is Enabled.

This guide from SkatterBencher sheds more light on the Precision Boost C-state Boost limiter : https://skatterbencher.com/2022/10/2...e-boost-limit/

The problem with this suggestion is on the version of BIOS prior to 0705, i get random reboots, not crashes, not BSODs, just a reset like someone hit the reset switch. There is no warning, it just literally happens.

I have to assume its because of the Memory i am running

EDIT: if i were to return to an earlier version of the BIOS but run my memory at stock hoping to circumvent any stability issues due to incompatibility, would i see better performance due to the increased boost clocks? my concern here is that the infinity fabric is going to run at a much slower speed and that might impact on performance more than the boost limitation?

[zekkragnos]

The problem with this suggestion is on the version of BIOS prior to 0705, i get random reboots, not crashes, not BSODs, just a reset like someone hit the reset switch. There is no warning, it just literally happens.

I have to assume its because of the Memory i am running

EDIT: if i were to return to an earlier version of the BIOS but run my memory at stock hoping to circumvent any stability issues due to incompatibility, would i see better performance due to the increased boost clocks? my concern here is that the infinity fabric is going to run at a much slower speed and that might impact on performance more than the boost limitation?

I know its not fixed but on the latest 0705 Bios, I went and enabled C-States which was set to automatic and also Medium Load Boost and its bosting much higher to the 5.7.

[STARRAIN@ROG]

Hi Soupladel,
Sorry for late reply.
After checked with our tech team, it is caused by Agesa update. However, our tech team have tested it with cinebench R23, and get the better score with the Agesa update than old version, so it doesn't affect performance.
Thank you.