MSI PRO B650M-B
Specifications
- Manufacturer: MSI
- 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.
Latest BIOS Version
- AGESA PI-1.3.0.0 updated. - Implemented the anti-cheat mechanism. - Improved PCIe-based devices compatibility under certain CPU or system combinations.
BIOS Release Notes Analysis
Launch Stability & Compatibility
The firmware lifecycle begins with vA11[Beta], which integrates AGESA 1.0.8.0 to establish support for Ryzen 8000 series processors and mitigates the Inception speculative side-channel vulnerability. Connectivity stability is addressed in vA3 by updating the PT21 firmware to version 231011_A0_01_82, resolving USB 3.0 device conflicts. Official support for Ryzen 8000 'Hawk Point' APUs is finalized in vA4 via AGESA 1.1.0.0. Critical security patching occurs in vA61[Beta], which updates to AGESA 1.1.0.1 to fix the LogoFAIL vulnerability while expanding DDR5 memory capacity support to 128GB. Furthermore, vA6 resolves STAPM power management issues to stabilize performance states on Ryzen 8000 series CPUs.
Feature Maturity & Hardware Support
Support for Ryzen 9000 'Granite Ridge' processors is enabled in vA8 with the deployment of AGESA 1.1.7.0. Version vAA introduces Curve Shaper and Memory OC OTF capabilities via AGESA 1.2.0.0a, alongside a patch for CVE-2024-36877. Inter-core latency issues affecting Zen 5 performance are resolved in vAB (AGESA 1.2.0.2) by optimizing CCD delay logic. Subsequent updates vAC2[Beta] and vAC implement X3D Gaming Mode and Latency Killer features on AGESA 1.2.0.2b to optimize thread scheduling. Finally, vAD enables support for Ryzen 9 9950X3D and 9900X3D processors via AGESA 1.2.0.3a, significantly improving memory compatibility for single-rank and dual-rank modules in 1DPC and 2DPC configurations.
Critical Security & Power Management
Security hardening is prioritized in vAB2[Beta] with AGESA 1.2.0.1, which patches the high-severity Sinkclose SMM Lock Bypass vulnerability to prevent privilege escalation. Version vAE updates to AGESA 1.2.0.3c to correct fTPM switch logic and apply further security patches for the Ryzen 9000 series. High-density memory support reaches maturity in vAF (AGESA 1.2.0.3e), enabling 256GB configurations (4x64GB) and patching the TPM Out-of-Bounds Read vulnerability. The lifecycle concludes with vAG3[Beta] (AGESA 1.2.0.3g), which deploys multiple overclocking solutions and refines compatibility for Ryzen 8000 series processors.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.