Gigabyte B650M D2H (rev. 1.2)

Specifications

  • Manufacturer: Gigabyte
  • Chipset: B650
  • Socket: AM5
  • Form Factor: Micro ATX
  • DIMM Slots: 2
  • Color: Black

BIOS Update Status

  • AGESA 1.2.0.3C

    Improves high-density memory compatibility, allowing stable operation of 4x DIMM configurations and 256GB total capacity.

  • AGESA 1.2.7.0

    Major enablement patch for next-generation 2026 processors; updates the PSP firmware and improves USB compatibility.

  • AGESA 1.3.0.0

    Preliminary support for the next major AM5 architecture revision; includes significant security hardening and memory training overhauls.

Resources

BIOS Update Notifications

Latest BIOS Version

Version:F40a
Release Date:2026-03-11

Checksum: 4BE3 Update AMD AGESA 1.3.0.0a for next gen Ryzen CPU performance optimized Fix DDR5 DRAM vulnerability issue (CVE-2025-6202) with mixed mode option

BIOS Release Notes Analysis

Launch Stability & Compatibility

The platform initializes with version F2, quickly advancing to support Ryzen 9000 'Granite Ridge' processors in version F30 via AGESA 1.1.7.0. Version F31 integrates AGESA 1.2.0.0a, which enables Curve Shaper technology to allow distinct undervolt curves for different temperature states and optimizes DDR5 memory compatibility for the new architecture. Early performance tuning in version F31a utilizes PBO enhancements to reduce operating temperatures while maintaining system stability.

Feature Maturity & Hardware Support

Significant performance optimizations for X3D processors arrive in version F32c, utilizing AGESA 1.2.0.2a to introduce X3D Turbo Mode and optimize thread scheduling logic. Version F32f expands this with "Zen5 Gaming Optimizations" via AGESA 1.2.0.2b, which also patches SMM vulnerabilities. Support for Ryzen 9 9000X3D series processors is established in versions F33a and F33b via AGESA 1.2.0.3a, which also addresses inter-core latency on 2CCD CPUs when paired with updated chipset drivers. Later updates, including F36, integrate the AI TOP Utility v4.1.1 and refine PCIe compatibility.

Critical Security & Power Management

Firmware hardening begins with version F32a, which integrates AGESA 1.2.0.1a to mitigate the high-severity Sinkclose vulnerability (SMM Lock Bypass). Version F33 resolves a microcode signature verification flaw (CVE-2024-36347), while version F35 updates to AGESA 1.2.0.3e to patch a TPM out-of-bounds read vulnerability (CVE-2025-2884). The lifecycle concludes with version F38, which implements AGESA 1.2.8.0 to fix the critical Hynix Rowhammer vulnerability (CVE-2025-6202) affecting specific DDR5 modules and prepares the platform for next-generation 2026 processors.

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