AMD ZEN5 max support speed for DDR5 is 5600.
However, why don’t I see faster 5200 or 5600 DDR5 ECC RAM support from the motherboard’s Qualified Vendor List (QVL)?
I only see 4800 on major brands (e.g. Asrock, Asus).
The reason you don’t see 5200 or 5600 DDR5 ECC RAM on the QVL is likely because motherboard manufacturers typically test and validate only 4800 MHz RAM, not higher speeds. ECC RAM prioritizes stability over performance, so it’s usually listed at 4800 MHz. Also, the memory controller may not handle higher speeds reliably with ECC RAM.
Higher-speed ECC RAM is less common and not in high demand, so manufacturers may not test or list those speeds. You can still try using faster RAM, but it might require manual adjustments in the BIOS.
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