Machinist X99 MR9A Pro is a high-value ATX motherboard for the LGA 2011-3 platform, frequently used with budget-friendly Intel Xeon E5 V3 and V4
processors. It is known for its robust VRM design and quad-channel memory support, making it a "sleeper hit" for workstations and gaming builds. Key Specifications
You're looking for a piece related to the "Machinist X99 MR9A Pro BIOS Top". Here's some information:
The Machinist X99 MR9A Pro is a motherboard model, specifically designed for Intel Xeon E5-2600 V3/V4 series processors, and it supports up to 4-way SLI and CrossFireX.
The "X99" refers to the chipset used on the motherboard, which is the Intel X99 chipset.
"MR9A" seems to be a code name or model identifier for the board.
"Pro" likely denotes that it's a professional-grade motherboard.
"BIOS Top" likely refers to the update or configuration of the motherboard's Basic Input/Output System (BIOS).
Here's a sample piece:
Machinist X99 MR9A Pro BIOS Top Update and Configuration machinist x99 mr9a pro bios top
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.
Key Features:
Updating the BIOS:
To update the BIOS on your Machinist X99 MR9A Pro motherboard:
Configuring the BIOS:
After updating the BIOS, configure the settings for optimal performance:
By following these steps, you can ensure your Machinist X99 MR9A Pro motherboard is running with the latest BIOS and optimal settings.
First, do not use a BIOS from ASUS, Gigabyte, or MSI. The Machinist MR9A Pro uses a proprietary ROM. To find the current "Top" or best version:
Pro Tip: The "Top" BIOS for this board as of late 2024/2025 is a modded version based on the X99 MR9A PRO USB_4.0.2 BIOS, patched with the "EFI NVMe" driver and hidden "Overclocking Performance Menu" unlocked using AMIBCP. Machinist X99 MR9A Pro is a high-value ATX
If you installed a bad "Top" BIOS and the board won't post:
AMIBOOT.ROM.| 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 UEFI only. 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. |
MR9A_PRO_TOP_v4.05.bin).Many Machinist boards ship with beta or "unlocked" BIOS versions that have hidden menus. A common issue on the MR9A Pro involves incorrect temperature readings or fan curves
The Machinist X99 MR9A Pro Go to product viewer dialog for this item.
comes with a factory-installed "PRO BIOS" that is specifically designed to support the unique requirements of the LGA 2011-3 platform, including Xeon E5 v3/v4 processors. While functional out of the box, users often look for specific "complete feature" bios modifications (modded BIOS) to unlock performance limits inherent in these Chinese X99 boards. Core BIOS Features
Processor Support: Natively supports Intel Xeon E5 v3 and v4 series and 5th/6th Gen Core i7 processors.
Memory Management: Supports up to 128GB (or 256GB on Pro Max versions) of DDR4 RAM, including ECC server memory and non-ECC desktop memory.
Storage & Boot: Includes NVMe SSD boot capability for M.2 drives and supports standard SATA 3.0/2.0 configurations.
Security: The updated versions typically include a 14-pin TPM 2.0 header, making them compatible with modern OS requirements like Windows 11. Supports Intel Xeon E5-2600 V3/V4 series processors Intel
Interface: Accessible by pressing
Standard Machinist BIOS versions often have restricted menus. Enthusiasts often flash custom firmware (like those found on GitHub) to gain:
Turbo Boost Unlock (TBU): Allows Xeon E5 v3 CPUs to run at their maximum turbo frequency on all cores simultaneously.
Undervolting: Enables voltage offset controls to reduce heat and power consumption.
RAM Timing Control: Unlocks the ability to manually adjust memory timings for better latency.
Smart Fan Control: Often, the stock BIOS only supports smart fan curves for the CPU_FAN1 header; modded versions can sometimes expand this or improve curve precision. Known Stock Limitations
Sensor Accuracy: Standard BIOS versions are notorious for invalid temperature and voltage readings in monitoring software.
Overclocking: Stock BIOS generally provides no overclocking capabilities for "K" series or unlocked Xeon CPUs without custom flashing.
Sleep Mode: While generally functional, some board revisions may experience stability issues with S3 sleep states on the stock firmware.
The Machinist X99 MR9A Pro is a high-end motherboard designed for Intel Xeon E5-2600 V3 and V4 series processors, offering a robust platform for workstation and server applications. This guide will delve into the key features, specifications, and BIOS settings of the Machinist X99 MR9A Pro, helping you understand how to optimize your system for maximum performance.
AHCI (for SSDs/HDDs) – Do not use RAID unless you have a dedicated card.