ASRock B660M Steel Legend

Specifications

  • Manufacturer: ASRock
  • Chipset: B660
  • Socket: LGA1700
  • Form Factor: Micro ATX
  • DIMM Slots: 4
  • Color: Silver / Black

BIOS Update Status

  • Microcode 0x129

    Microcode update 0x129 addresses an issue where the processor may request high voltages, potentially leading to accelerated degradation.

  • Microcode 0x12B

    Microcode update 0x12B addresses elevated voltage requests by the processor during idle and/or light activity periods (includes 0x129).

  • Microcode 0x12F

    Microcode update 0x12F to further address processor degradation on systems with light activity.

Resources

BIOS Update Notifications

Latest BIOS Version

Version:16.01
Release Date:2025-10-30

Optimized System Compatibility.

BIOS Release Notes Analysis

Launch Stability & Compatibility

Following the initial platform release v2.01, update v4.03 integrates support for Intel XMP 3.0 SPEC Rev1.2 to standardize high-speed memory profiles. Version v6.02 optimizes signal integrity for PCIe Gen5 devices and introduces the "Load Intel Base Power Limit Settings" option to establish baseline thermal envelopes. Subsequent update v7.03 integrates the ASRock ADI feature, while cumulative patches through v7.03 stabilize memory training and update the Intel Management Engine (ME) firmware.

Feature Maturity & Hardware Support

Firmware v8.02 enables architectural support for Intel 13th Gen processors, followed by v11.03 which prepares the platform for 14th Gen Raptor Lake Refresh CPUs. Update v12.01 introduces a Multi Microcode function, allowing users to toggle specific processor patch revisions for compatibility testing. Feature expansion continues in v14.01[Beta], which enables Intel Application Optimization (APO) for supported 12th and 13th Gen processors to enhance thread scheduling and gaming performance.

Critical Security & Power Management

Security hardening begins with v13.01, which patches UEFI image parsing vulnerabilities associated with LogoFAIL. To address Raptor Lake stability, v14.03[Beta] enforces Intel recommended power defaults, while v14.04[Beta] integrates Microcode 0x125 to correct eTVB algorithms that allowed unsafe frequency boosting. Critical protections against Vmin Shift Instability are deployed in v14.05 via Microcode 0x129 (1.55V voltage clamp) and v15.01 via Microcode 0x12B (root cause fix for idle voltage requests). Finally, v15.03 updates to Microcode 0x12F to provide advanced mitigation against voltage drift and degradation risks.

ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.