ASUS released BIOS updates 3002 and 3103 for its Intel Z890 and B860 motherboards on April 30, 2024. These updates introduce advanced memory optimization technologies designed to simplify the use of mixed DDR5 RAM configurations. The primary goal is to allow users to combine memory modules from different manufacturers without manual tuning.
The updates bring AEMP II and AEMP III technologies to the platform. AEMP II targets standard U-DIMM memory modules, while AEMP III supports the latest CU-DIMM memory. A key feature is DIMM Fit, which analyzes installed memory to ensure XMP stability. This automated process helps unify the operating speed of mixed sticks.
ASUS Z890 B860 motherboards now support mixed DDR5 memory configurations via new BIOS updates.
Testing on the ROG Maximus Z890 Extreme motherboard demonstrated the effectiveness of these updates. The system successfully unified the DRAM transfer speed to 5200 MT/s when using mixed Samsung, SK Hynix, and Lexar (Micron) RAM. This unified speed exceeds the lowest spec of the installed modules, which was 4800 MT/s. The entire optimization process takes approximately five minutes.
ASUS Z890/B860 BIOS Update Specifications
| Feature | Details |
|---|---|
| BIOS Versions | 3002 and 3103 |
| Optimization Time | Approximately 5 minutes |
| Unified Speed | 5200 MT/s |
The updates address a common pain point for enthusiasts who wish to expand memory capacity using available sticks. By automatically aligning speeds, ASUS reduces the complexity of building with non-matched components. The technology relies on stress testing to verify stability during the optimization phase.
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