AMD EXPO 1.2 Adds Ultra Low Latency Mode for 5-7ns Lower Delay

AMD announced EXPO 1.2 on April 24, 2026. AMD announced The update introduces Ultra Low Latency mode for memory profiles. This mode reduces latency by 5 to 7 nanoseconds at a 6000 clock speed compared to standard EXPO 6000. The announcement also adds CKD Bypass Profiles to the specification. AMD includes support for MRDIMM in this release. The update enables tREFI, tRRDS, tWR, ULL, and VDDP settings.

The Ultra Low Latency feature targets specific performance gains. Users can achieve lower latency at the 6000 clock speed. The update expands profile options with CKD Bypass Profiles. CKD Bypass Profiles have been added to EXPO 1.2. AMD also adds MRDIMM support to the EXPO 1.2 standard. The update enables several timing parameters for memory control. These parameters include tREFI, tRRDS, tWR, ULL, and VDDP.

Current AGESA 1.3.0.1 firmware lacks full CUDIMM support. AMD plans to add this support in the future Zen 6 platform. The announcement does not include pricing information. The announcement does not list availability dates. The update focuses on technical specifications and feature additions.

AMD updates memory standard with new latency reduction and profile support

AMD releases EXPO 1.2 to enhance memory performance. The update introduces Ultra Low Latency mode for reduced latency. The specification adds CKD Bypass Profiles and MRDIMM support. The update enables tREFI, tRRDS, tWR, ULL, and VDDP settings. Current firmware lacks full CUDIMM support. AMD will add this support with Zen 6.

Source: twitter.com