As Matt says - very fast. I have several Ryzen first gen based units, a couple of second gen based units and one third gen based unit. all working well, yes, they are desktop units I assembled.
One thing you should be aware of is the drive. If it is a standard hard drive there should be no problems, if it is an MVME M2 and you want to boot from it you will need set that in the uefi bios.