Asus PRIME B860-PLUS WIFI-CSM
Specifications
- Manufacturer: Asus
- Chipset: B860
- Socket: LGA1851
- Form Factor: ATX
- DIMM Slots: 4
- Color: Silver / Black
BIOS Update Status
- Microcode 0x117
Contains Intel Maintainence Release 1.
- Microcode 0x11A
Performance and stability improvements with Intel Maintainence Release 4 (MR4).
- Microcode 0x121
Updates compatibility tables for future Intel Core Ultra processor steppings and improves system stability.
Latest BIOS Version
"1.Support for future Intel® Core™ Ultra series processors.2.Update AMI BIOS Codebase to version 5.32_9AACA_RC0D.00.05.10(6011.00)_213.3.Update Intel® ME firmware to version 19.0.5.2175v0.2 for enhanced platform stability.4.Update CPU Microcode to m_82_c0662_00000121 to improve processor performance and security.Updating this BIOS will simultaneously update the corresponding Intel ME to version 19.0.5.2175. The ME version will remain updated even if you roll back to an older BIOS later. We recommend using EZ Flash to update the BIOS, as it supports ZIP format and auto-updates the ME."
BIOS Release Notes Analysis
Launch Stability & Compatibility
Following the initial platform release (v0401), update v0608 integrated Microcode 0x114 to resolve Processor Power Management (PPM) logic issues, mitigating frame-time spikes and latency in gaming workloads. This version also enabled Wi-Fi 7 (320MHz) support and introduced CUDIMM Dual PLL mode for improved memory stability. v0802 enhanced power efficiency by adding SA PCI Express L1 Substates and introduced the Resource Priority Feature. Memory support was significantly expanded in v0805, which validated 256GB configurations at 5600MT/s and activated the AEMP III feature for high-density CUDIMM modules.
Feature Maturity & Hardware Support
Firmware v1001 further refined memory training, enabling speeds up to 7000MT/s via AEMP III. Updates v1203 and v1204 implemented Microcode 0x117, which enhances signal integrity for high-speed CUDIMM memory and enables DLRM states to reduce storage power consumption during idle periods. These versions also updated the Silicon Initialization Code (MRC 2.10.0.0). Version v1402 introduced DIMM Fit Pro to automate memory compatibility tuning and improve system stability.
Critical Security & Power Management
Later updates focused on platform security and future hardware readiness. Versions v1405 and v1606 updated the Intel Management Engine (ME) to v19.0.5.1984 and v19.0.5.1992 respectively. v1802 updated the processor Microcode to 0x11a. The cumulative v3002 update prepares the motherboard for future Intel Core Ultra processors by integrating Microcode 0x121 to update compatibility tables and upgrading the ME firmware to v19.0.5.2175.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.