I noticed something odd while buying ddr5 ram for this board. I am looking at Gskill and the only compatibles are the 'U' models, e.g. G.SKILL F5-6000U36... But I only find 'J' models for sale with decent stats (for example in amazon.de), e.g. F5-6400J3239G16GA2-TZ5R. Gskil QVL also says J models are compatible only with the Z boards.
Is it really not going to be able to boot and if so, how are people supposed to build mid tier builds