Asus PRIME B860-PLUS-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 launch in v0401, firmware development focused on immediate architectural corrections and signal stabilization. Version v0606 integrates Microcode 0x114 to resolve critical Processor Power Management (PPM) logic faults, mitigating frame-time spikes and latency issues in gaming workloads. This update also upgrades the Memory Reference Code (MRC) to v1.4.6.64, enabling CUDIMM Dual PLL mode and stabilizing DDR5 frequencies above 6000MHz. Furthermore, v0606 activates Wi-Fi 7 (320MHz) support and introduces IDI Data Transfer Mode for integrated graphics flexibility. Power management is refined in v0802, which adds System Agent (SA) PCI Express L1 substates to optimize link power management and introduces the Resource Priority Feature for hardware allocation.
Feature Maturity & Hardware Support
Mid-cycle updates prioritize high-density memory support and proprietary tuning technologies. Version v0805 and v1001 enable AEMP III to support 256GB configurations at 5600MT/s and optimize 2-DIMM setups for speeds up to 7000MT/s. Versions v1203 and v1204 implement Microcode 0x117, which enhances signal integrity for high-speed CUDIMM DDR5 memory and enables the DLRM state to reduce storage power usage during idle D3 states. This era of updates culminates in v1402, which integrates DIMM Fit Pro to further automate memory training and compatibility adjustments.
Critical Security & Power Management
Recent firmware revisions focus on platform hardening and preparation for next-generation silicon. Versions v1405 through v1606 provide iterative updates to the Intel Management Engine (ME), advancing to version 19.0.5.1992 to address security and stability vectors. Version v1802 updates the CPU Microcode to 0x11a, while v3002 introduces broad architectural changes for future Intel Core Ultra processors. Specifically, v3002 integrates Microcode 0x121 to update compatibility tables for future processor steppings and upgrades the AMI BIOS codebase to version 5.32, ensuring long-term platform viability.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.