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ECC UDIMM Frequency Limitation on AM5 Platform

The AM5 platform's ECC UDIMM frequency is capped at 5200 MT/s on Ryzen 9000 series consumer CPUs due to an AMD-side change in AGESA ComboAM5 PI version Pre1.3.0.0 and later. This limitation affects users who want to utilize higher-speed ECC UDIMMs, potentially impacting system performance and compatibility. The cap is enforced by the signed PSP firmware, making it difficult for board vendors to override.

Computing & Technology, Computer Science, Programming Languages