Review MSI MAG B660M Mortar WIFI DDR4 Review: B660 Chipset Bliss?

you can run all cores at stock maxium speed
you can't change the multiplier with a B chipset

Ok, I see the distinction. Technically correct, however most people are lucky to be able to set all core at max turbo. 10850K for example has a max single core turbo 5.2Ghz at stock, most people who 'overclock' on these shoot for 5.1Ghz all core. In my book this is actually a form of overclocking as the 10850K would never do all core 5.1Ghz by default.

It's just that you are limited to the max (5.2Ghz) single core speed, but can set all cores to that max. You probably won't be able to cool the thing without something like a $400+ custom open loop water setup beyond that anyway.