The Machinist X99-MR9A Pro Go to product viewer dialog for this item.

CPUs to force all processor cores to run at their maximum single-core turbo frequency simultaneously. RAM Timing Control:

  • Memory Interleaving Options (Channel, Socket, or NUMA per node)
  • SPD Write Protect – Disable to flash custom SPD to cheap server RAM
  • RC Steering Menu – Adjust IMC voltage, VCCIO, VCCSA (not just DRAM voltage)
  • BIOS Flash Utility – Built‑in programmer mode to flash full 32MB ROM from USB without a CH341A

3. Advanced Memory Overclocking

The official BIOS locks memory tweaks to basic XMP profiles. The exclusive BIOS unlocks full memory timings (tCL, tRCD, tRP, tRAS) , command rate, and even VCCIO/VCCSA voltages. This is critical for running cheap server DDR4 (2133MHz) at tighter timings or overclocking generic 2400MHz RAM to 2933MHz.

Memory timing adjustment is another area where the stock BIOS fails. An exclusive BIOS unlock provides access to primary, secondary, and tertiary timings. Since many Xeon users rely on recycled server DDR4 ECC RAM, tightening these timings is essential to overcoming the lower clock speeds typical of enterprise memory.

  • CPU Configuration (C‑states, hyper‑threading, AES, VT‑x/d)
  • Chipset Tweaks (PCIe bifurcation for x4/x4/x4/x4 on the second x16 slot)
  • Power & Thermal (long/short duration power limits, current threshold)