[pantalaimon]

It's a DDR5 thing - four sticks have absolutely been slower on the Zen 4 too. I've tried 4x32 GiB on a 7950X and I would get exactly that speed after several minutes (!) of POST. Anything faster would not be stable, I ended up sending back half of it and settled with 64 GiB total, POST still takes 30s.

[redditor98654]

I have a similar setup and with 4x32 sticks the most I have been able get it 4800 with EXPO enabled. Is that your experience too?