Ryzen 7 5800 is supported by many x570 or b550 motherboard with a bios update.   Before purchase make sure it has Ryzen-5000-series-compatible BIOS preinstalled. list of motherboards that support Ryzen 5000 series and minimum BIOS version. I do not see issue of moving cpu/ram/gpu to new motherboard/case.
Hello, Im planning buying a new case, cpu cooler, motherboard and powersupply and moving the cpu (5800 non x) gpu (3080) ram (16 gb dual channel 3200 mhz) and storage (512 m.2 + 2 TB HDD) to a new system to have better cooling + smaller form factor. Could someone let me know if any b550 or x570 board will work with the 5800? Also would there be any other problems doing this case swap? Thanks
Aurora R10, move CPU/GPU/Ram to 3rd party mobo/case