Asus PRIME B650-PLUS WIFI
Specifications
- Manufacturer: Asus
- Chipset: B650
- Socket: AM5
- Form Factor: ATX
- DIMM Slots: 4
- Color: Black / Silver
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
"Updated AGESA ComboAM5 PI 1.3.0.1b Patch A to support the GNR Transparent Secure Memory Encryption (TSME) feature.Before running the USB BIOS Flashback tool, please rename the BIOS file (A5629.CAP) using BIOSRenamer."
BIOS Release Notes Analysis
Launch Stability & Compatibility
The firmware lifecycle commences with v0305, establishing baseline system functionality. Update v3042 integrates AGESA 1.2.0.2 to optimize core-to-core communication latency and introduces the 105W cTDP option for compatible processors. Subsequent updates v3056 and v3057 implement AGESA 1.2.0.2a, which enables Turbo Game Mode to refine thread scheduling and CCD parking logic, specifically targeting gaming performance improvements.
Feature Maturity & Hardware Support
Memory compatibility receives significant upgrades in v3207, enabling speeds up to 6600MT/s via AEMP profiles. Version v3208 (AGESA 1.2.0.3a Patch A) expands high-density support, allowing 256GB configurations (4x64GB) at 5000MT/s. Processor support is formalized in v3222, which enables Ryzen 9 9950X3D and 9900X3D CPUs and introduces AI Cache Boost for compute optimization. Further memory training refinements for 4-DIMM population are applied in v3257 via AGESA 1.2.0.3d.
Critical Security & Power Management
Security hardening begins with v3067 (AGESA 1.2.0.2b), which patches SMM vulnerabilities (AMD-SB-7027) and resolves fan control bugs. Version v3201 addresses the PeCoffLoader memory overflow issue and mitigates AMD Microcode Signature Verification vulnerabilities. Update v3263 integrates AGESA 1.2.0.3e to fix the TPM Out-of-Bounds Read vulnerability (CVE-2025-2884) and enforces anti-rollback policies. Finally, v3602 updates to AGESA 1.2.7.0, refreshing the PSP firmware to prepare support for next-generation 2026 processors.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.