先前 Intel 曾向 The Verge 表示 0x12B 微碼已經是 Vmin Shift 問題的最終解決方案，不過 Intel 現在推翻了這項說法。據 Intel 最新公開聲明指出，他們正要推出新的 0x12F 微碼，以解決系統在輕度負載下長時間運作可能出現的 Vmin Shift 問題，這次或許能真正解決所有問題了吧？
Intel 將發布新微碼 0x12F
Intel 在官方論壇中表示，他們從 Intel 13 代和 14 代 Core 處理器使用者的回報進行調查，發現少數使用者會遇到當系統長時間 (數天) 處於低負載 / 輕度負載狀態下，可能會出現 Vmin Shift 問題。此次更新不會改變對 Vmin Shift 的根本原因判定，跟 0x12B 微碼相比不會出現可測量的效能影響，Intel 建議使用者更新到最新微碼。
As part of its effort to continually improve its products, Intel is releasing a new microcode update (0x12F) supplementing the 0x12B microcode update released in September 2024. This new microcode further improves system conditions that can potentially contribute to Vmin Shift Instability on Intel Core 13th and 14th Gen desktop-powered systems. Intel is releasing this 0x12F update based on Intel’s investigation of a limited number of reports regarding systems continuously running for multiple days with low-activity and lightly-threaded workloads.
The release of the 0x12F microcode does not alter the root cause determination for the Intel Core 13th and 14th Gen desktop processor Vmin Shift Instability issue: https://community.intel.com/t5/Processors/Intel-Core-13th-and-14th-Gen-Desktop-Instability-Root-Cause/m-p/1633442
Based on microcode testing and validation, Intel has identified no measurable performance impact with the 0x12F microcode update*.
Intel continues to recommend users with Intel Core 13th and 14th Gen desktop processors ensure they have the latest BIOS updates installed and utilize the Intel Default Settings profile in their BIOS to mitigate Vmin Shift Instability risk with their systems.
Small Print:
*Intel’s internal testing comparing 0x12F microcode to 0x12B microcode – on Intel Core i9-14900K with DDR5 5600MT/s memory- indicates performance impact is within run-to-run variation (i.e., Cinebench R23.200, Speedometer 3, WebXPRT4 (v3.73), and Crossmark)**. For gaming workloads on Intel Core i9-14900K with DDR5 5600MT/s memory performance is also within run-to-run variation (i.e., Shadow of the Tomb Raider, Cyberpunk 2077, Hitman3: Dartmoor, Total War: Warhammer III – Mirrors of Madness)***. System performance is dependent on configuration and several other factors.
**Processor: Intel Core i9-14900K, Motherboard: Intel Raptor Lake Reference Board (M40919-101), Memory: 64GB at 5600MT/s, Storage: Samsung* MZVL2512HCJQ-00A00, Graphics: Intel UHD Graphics 770, Graphics Driver Version: 32.0.101.6314, Display Resolution: 1280x1024, Operating System: Windows 11 (version 26100.2161)
***Processor: Intel Core i9-14900K, Motherboard: OEM board, Memory: 2x16GB at 5600MT/s, Storage: Samsung* MZVL2512HCJQ-00A00, Graphics: MSI* RTX 4090 Suprim X, Graphics Driver Version: NVIDIA* v572.16, Display Resolution: 1920x1080, Operating System: Windows 11 (version 26100.2161)
筆者也到御三家的網站上，各挑了一張主機板檢查 BIOS 更新狀況，看起來目前都還沒釋出包含新微碼的 BIOS，如果後續有推出還是更新一下比較安全。而華擎目前已經開始提供 0x12F 微碼的 BIOS，使用者記得去下載更新 (按此前往)。
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