Machinist X99 Mr9a Pro Bios Top [2021] May 2026

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.

Overview of Machinist X99 MR9A Pro

The Machinist X99 MR9A Pro motherboard is built on the Intel X99 chipset, supporting Intel Xeon E5-2600 V3 and V4 series processors. It features a variety of technologies and ports to cater to high-performance computing needs, including: machinist x99 mr9a pro bios top

• Socket Compatibility: Supports Intel Xeon E5-2600 V3 and V4 series processors.
• Chipset: Intel X99.
• Memory: 8 x DDR4 DIMM slots, supporting up to 128GB of memory (ECC and non-ECC).
• Expansion Slots: Multiple PCIe slots for graphics cards, RAID controllers, and other expansion cards.
• Storage: Supports various storage interfaces, including SATA III, M.2, and U.2.
• Networking: Dual or more Gigabit Ethernet ports, depending on the model.
• USB Ports: Multiple USB 3.0 and 2.0 ports for peripherals.

Boot Settings

This board supports modern boot methods crucial for Windows 10/11 installations. The Machinist X99 MR9A Pro is a high-end

• CSM (Compatibility Support Module): Can be enabled for legacy GPU support or disabled for a pure UEFI boot.
• Secure Boot: Often set to "Windows 8/10" or "Other OS." For Linux users or modded Windows installs, this often needs to be disabled.
• Boot Priority: Straightforward priority list, though some users report the board occasionally "losing" boot order if the CMOS battery dies (a common issue with these budget boards).

Troubleshooting Common "Top" BIOS Issues

"Bugged" BIOS Versions

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 Socket Compatibility : Supports Intel Xeon E5-2600 V3

1. The "Overclocking Performance Menu"

This is the Top feature. In a stock BIOS, this is hidden.

• CPU Ratio: For "K" series i7s (e.g., i7-6950X). Xeons are locked, but you can adjust BCLK (Base Clock) from 100MHz to 103MHz safely.
• Memory Timings: Here you can manually set tCL, tRCD, tRP, tRAS. This is critical if your 2133MHz RAM refuses to run at 2666MHz.
• DRAM Voltage: Warning: X99 max safe is 1.35V for DDR4. Do not exceed 1.45V.
• CPU VCCIN: The input voltage. Stock is 1.8V. For heavy overclocks, 1.9V is the "Top" safe limit.