I have got motherboard with 4 DIMM slots and can't decide which memory modules to buy: single rank or dual rank (ranks, not channels!). I think memory controller support limited amount of ranks, but i am not sure, since I can't find this information anywhere (included Intel documents).
I know that i7-9800X support Quad Channel, but i also need to know how many ranks it support to don't overload it OR spent more money on RAM which don't work or not even used.
Main goal in total - use CPU, RAM and motherboard with maximum performance.
P.S. Buildzoid in one his video even talk about very rare configuration - 3 ranks per channel (dual rank E-Die + single rank E-Die).