ASRock B450M/ac R2.0
Specifications
- Manufacturer: ASRock
- Chipset: B450
- Socket: AM4
- Form Factor: Micro ATX
- DIMM Slots: 4
- Color: Black / Silver
Latest BIOS Version
Update Secure Boot Key (2023 KEK/DB/PK).SHA256: 1f11160256fd9e5ea9c5017f265beb62fffb60e93c16f27f1017b37b6833fce8
BIOS Release Notes Analysis
Launch Stability & Compatibility
The firmware lifecycle begins with v2.00, quickly expanding platform capability in v2.30 to support Ryzen 5000 and 5000 G-series processors. Update v2.60 integrates AGESA 1.2.0.0 to enable Resizable BAR for Ryzen 3000 series CPUs, optimizing PCIe data transfer. Significant stability improvements arrive in v2.70 with AGESA 1.2.0.2, initiating mitigations for USB connectivity dropouts. This effort concludes in v2.80, which implements AGESA 1.2.0.3c to fully resolve USB and PCIe Gen 4 instability while enabling default fTPM support for Windows 11 readiness.
Feature Maturity & Hardware Support
Mid-cycle updates focus on hardware optimization and eliminating latency. Version 2.90 updates to AGESA 1.2.0.6b, officially enabling the Ryzen 7 5800X3D with L3 V-Cache optimizations. Critical system responsiveness is addressed in v3.10 via AGESA 1.2.0.7, which resolves fTPM Stuttering issues affecting Windows environments and improves compatibility for NVIDIA GeForce RTX 40 series GPUs. Earlier beta work in v2.85[Beta] (AGESA 1.2.0.5) introduced foundational security architecture changes.
Critical Security & Power Management
Recent development prioritizes security hardening and advanced voltage control. Version 8.01[Beta] updates to AGESA 1.2.0.8, unlocking native Curve Optimizer support for the 5800X3D. Security patches intensify in v10.08[Beta] (AGESA 1.2.0.B), which mitigates the Inception side-channel vulnerability and patches LogoFAIL image parsing exploits. Continued hardening in v10.31[Beta] integrates AGESA 1.2.0.Cc to resolve the high-severity Sinkclose SMM lock bypass. The roadmap extends into 2025 with v10.41[Beta] (AGESA 1.2.0.E) addressing AMD-SB-7027 SMM vulnerabilities, and v10.43[Beta] (AGESA 1.2.0.F) upgrading fTPM firmware to ensure long-term Windows 11 and anti-cheat compatibility.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.
