MSI Z790MPOWER

Launch Stability & Compatibility

The initial release vP0 establishes baseline platform functionality. Update vP12[Beta] expands supported DDR5 memory capacity to 256GB. Version vP13[Beta] integrates Microcode 0x123 to correct early eTVB algorithm errors and disables CEP (Current Excursion Protection) for 14th Gen B0 stepping processors to improve performance consistency. Support for the Intel Core i9-14900KS is introduced in vP14[Beta] and finalized in vP1. Additionally, vP2 stabilizes system behavior when switching to CSM mode.

Feature Maturity & Hardware Support

Update vP32[Beta] implements Intel Default Settings, replacing manufacturer-tweaked power profiles with Intel-validated baselines to ensure operation within safe limits. Version vP5 resolves a ratio locking issue on i5-13600K processors that incorrectly restricted P-Cores to a 50x multiplier. vP7 fixes non-volatile memory errors that caused DMI UUID loss after clearing CMOS. Furthermore, vP8 corrects the BIOS setup logic to ensure fan configuration changes are properly discarded when selecting "exit without saving."

Critical Security & Power Management

Firmware vP3 integrates Microcode 0x125 to patch critical eTVB algorithm bugs causing unsafe frequency boosts and resolves CVE-2024-36877. Update vP4 applies Microcode 0x129, implementing a hard 1.55V voltage clamp to prevent physical processor degradation. Version vP6 delivers Microcode 0x12B to address the root cause of Vmin Shift Instability regarding elevated voltage requests during idle states. Continued maintenance in vP7 and vP81[Beta] updates to Microcode 0x12C and 0x12F respectively, offering advanced mitigation for edge-case voltage drifts and "Always On" degradation risks. Finally, vP8 hardens platform security by enabling Pre-boot DMA Protection, VT-d, and IOMMU defaults to mitigate CVE-2025-14303.