If using an M.2 NVMe SSD as a boot drive, go to and ensure Storage OpROM Policy is set to UEFI Only . 2. Memory Configuration and Smart Sub-Timings
| Problem | Likely Fix | |---------|-------------| | No POST / Black screen | Clear CMOS (jumper or remove battery for 5 mins). Boot with minimal RAM (1 stick in slot A1). | | BIOS doesn't detect NVMe SSD | Enable Above 4G Decoding and set CSM to . Some NVMe drives need manual PCIe link speed set to Auto. | | RAM showing half speed | Go to Chipset → set Memory Frequency manually. Xeon v3 supports up to 2133 MHz; v4 supports 2400 MHz max (usually). | | Fans run full speed always | Adjust in Hardware Monitor → Smart Fan → set to PWM or DC based on fan type. | | BIOS update needed? | Only if stability is broken. Machinist rarely provides updates. Contact seller for a beta BIOS. Never flash from unknown sources. |
a "top" performer, many users turn to a modified BIOS that allows for: machinist x99 mr9a pro bios top
The heart of the Machinist X99 MR9A Pro is an American Megatrends (AMI) Aptio V BIOS, typically version 5.11 dated around March 2023. While it's built on the familiar UEFI framework, Machinist has significantly stripped down and obfuscated its interface, hiding many advanced features from the standard user. The core of the BIOS is stored on a W25Q128FV flash chip, which you can locate on the motherboard.
The Machinist X99 MR9A Pro is a popular, budget-friendly LGA2011-3 motherboard used for building affordable workstations and gaming PCs using Intel Xeon E5 V3 and V4 processors. Maximizing the performance of this Chinese motherboard requires a deep dive into its BIOS settings. If using an M
The Machinist X99 MR9A Pro motherboard features an Intel X99 chipset and supports Intel Xeon E5-2600 V3/V4 series processors. For optimal performance, updating the BIOS to the latest version is recommended.
Restart your computer and enter the BIOS setup (usually by pressing F2, F12, DEL, or ESC). Boot with minimal RAM (1 stick in slot A1)
The stock firmware is a standard that includes more configuration options than typical budget boards, though it comes with some "Chinese quirks":
| Component | "Top" Setting (Performance) | Stable Daily Setting | | :--- | :--- | :--- | | | BCLK: 103MHz (3.0 GHz all-core) | BLCK: 100MHz (2.9 GHz stock) | | RAM (Samsung B-die) | 3200MHz @ 1.35V CL16 | 2666MHz @ 1.20V CL19 | | CPU Cache | 3.2 GHz @ 1.1V | 2.8 GHz @ 0.95V | | Fan Curve | Custom: 70% @ 60°C | Default: Silent |
Reinsert the battery, plug the power cable back in, and turn on the system. The BIOS will revert to safe factory defaults. Common Error Codes (Post Code Display)
Most top-tier modded BIOS cannot be flashed via the standard Q-Flash menu because of signature checks.