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Machinist X99 Mr9a Pro Bios -

Appendix A: Hidden Menu Access
At BIOS main screen → Chipset tab → Press Ctrl + F1 → Overclocking menu appears.

Appendix B: BIOS Recovery Jumper
Located between PCIe slot 2 and 3: short pins 2-3 to force recovery mode, then flash via USB.

Out of the box, these boards often apply auto settings that can cause crashes or fail to recognize the full potential of your Xeon CPU.

A. Memory (XMP):

B. CPU Microcode:

C. C-States and Power Management:

The stock BIOS (typically version 4.6.5.4 or similar) often lacks microcode for Xeon v4 Broadwell-EP. Users must manually update microcode via: machinist x99 mr9a pro bios

  • Memory:
  • Voltage:
  • Fan Control:
  • PCIe Link Speed: Force Gen3 (avoid auto negotiation issues).

    • 1. Overclocking & Performance Tuning (All in the "OC" or "Turbo" tab)

    2. Memory Configuration (Critical for X99)

    3. Boot & Compatibility

    4. CPU Configuration (Advanced Tab)

    5. Health / Hardware Monitor