It doesn't work that way. AMD said they simply couldn't do it. It wasn't about taking some modest performance hit, it was that they couldn't make the chip function with modular memory due to signal integrity problems.
Why not put a big fat Ryzen 9 chip in it? Most people use their computer for browsing the web, playing some games, doing some spreadsheets. A standard CPU would have been more than powerful enough for that and the Desktop would be more repairable.