To 5800X3D users updating to 24H2 now that it's rolling out - it breaks the 4.55Ghz boost step.

After a clean install of 24H2 and getting all of my chipset drivers and software up to date i noticed in HWINFO64 that the global frequency limit is 4450Mhz as opposed to the 4550Mhz that is achievable in lighter single threaded tasks in previous windows releases.

All bios settings pertaining to the higher boost step have been unchanged (Global c-states etc) and Windows power plan is on the default balanced. 24H2 just doesn't seem to detect 4550Mhz as the frequency ceiling.

It doesn't make a meaningful difference in performance in any software relevant to me, just a heads up to anyone updating and experiences the same thing.

Solution - make sure that "AMD Cool & Quiet" is enabled in the BIOS, this feature did not need to be enabled in 23H2 in order to boost to 4550Mhz but it seems as though it is a requirement in 24H2.