MSI introduces High-Efficiency mode to cut DDR5 latency near EXPO ULL

MSI has released a BIOS High‑Efficiency mode for standard DDR5‑6000 EXPO memory that lowers latency to levels comparable with AMD's EXPO Ultra Low Latency (ULL) kits. In MSI’s own testing with a Ryzen 7 9800X3D processor, an MSI B850MPOWER motherboard and two 32 GB G‑Skill DDR5‑6000 kits, standard EXPO memory measured 79.4 ns latency. Enabling the most aggressive ‘Tightest’ preset reduced latency to 71.6 ns, while an EXPO ULL kit recorded 71.4 ns (71.1 ns with the mode enabled). The feature works by adjusting secondary and tertiary timings and offers four presets—Tightest, Tighter, Balance, and Relax. MSI notes that the aggressive settings may not be stable with every configuration, recommending thorough testing. The mode provides a way to achieve latency gains without purchasing the expensive ULL kits, which are priced high amid a constrained DRAM market.