Asus PRIME Z790-V AX
Specifications
- Manufacturer: Asus
- Chipset: Z790
- Socket: LGA1700
- Form Factor: 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.
Latest BIOS Version
"1. Improved system performance, stability, and device compatibility.2. Implemented security updates.3. Updated Management Engine (ME) to version 16.1.35.2557.Updating this BIOS will simultaneously update the corresponding Intel ME to version 16.1.35.2557. Please note after you update this BIOS, the ME version remains the updated one even if you roll back to an older BIOS later. "
BIOS Release Notes Analysis
Launch Stability & Compatibility
The firmware lifecycle begins with the initial release in v1605, rapidly followed by v1611 which introduces support for USB4 PCIe Gen4 add-in cards to expand connectivity options. Memory subsystem capabilities are significantly enhanced in v1630, enabling support for high-density 256GB DDR5 configurations. Update v1641 integrates Microcode 0x123, allowing users to disable IA CEP (Current Excursion Protection) to optimize performance on 14th Gen non-K processors, provided adequate cooling is maintained. This version also updates the Intel Management Engine to v16.1.30.2307v4. Subsequent optimization in v1645 further refines DDR5 compatibility and tunes CEP behavior for improved system stability.
Feature Maturity & Hardware Support
Mid-cycle updates focus on aligning platform parameters with Intel specifications to ensure long-term reliability. Version 1656 implements the Intel Baseline Profile, reverting power limits to factory defaults to stabilize gaming workloads. This framework is expanded in v1658, which introduces Intel Default Settings with distinct "Performance" and "Extreme" profiles while redefining the F5 hotkey to "Reset to Defaults." Critical thermal management is addressed in v1661 via Microcode 0x125, which patches the eTVB algorithm to prevent processors from boosting to peak frequencies when exceeding safe temperature thresholds.
Critical Security & Power Management
Later revisions prioritize mitigating Vmin Shift Instability through a sequence of microcode updates. Version 1663 integrates Microcode 0x129 to implement a hard voltage clamp at 1.55V, restricting maximum requested VID. This is followed by v1666, which deploys Microcode 0x12B to address the root cause of elevated voltage requests during idle and light-load states, while also enforcing C1E to reduce processor stress. Advanced mitigation continues in v1820 with Microcode 0x12F, targeting edge-case voltage drifts. The maintenance cycle concludes with v1825, which applies general security patches and updates the Intel Management Engine to version 16.1.35.2557.
ℹ️AI-synthesized summary derived from official changelogs and verified microcode specifications. Always verify with the manufacturer.