I've recently bought Ryzen 4650G for memory overclocking.
My mobo - MSI X570 Unify.
I can't boot up system with MCLK higher than 4266MHz (FCLK = 2133MHz) with 1:1 multiplier. 4800MHz with 2:1 works perfect, but 4333 1:1 don't even POST.
I've tried different memory kits (Rev. E, CJR, B-Die)...