MACHINISIT LGA 2011-3 Motherboard X99 Micro ATX Mainboard for Intel Xeon E5 V3 V4 Series Processors (DDR4 Max 128GB, PCIe 3.0, M.2 Protocol, Gigabit LAN), X99 PR9-H PC Server
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AI Verdict
This is a Micro ATX LGA 2011-3 motherboard with an Intel HM55 chipset, 128GB DDR4 2400MHz max RAM, and a PCIe 3.0 x16 slot, for budget Intel Xeon E5 V3/V4 builds.
This motherboard is a situational fit for users specifically looking to build an extremely budget-friendly system around an existing LGA 2011-3 Xeon E5 V3/V4 CPU. Its low price point and support for up to 128GB DDR4 RAM are its main draws, but the outdated HM55 chipset, slow SATA 2.0 and USB 2.0 interfaces, and reported driver and BIOS limitations mean it's not for general use.
If you need faster storage, more modern USB connectivity, or a more stable platform with better driver support, look for an X99 motherboard with a C612 chipset and native USB 3.0/SATA 3.0 ports.
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Pros
- Supports Intel Xeon E5 V3/V4 series and Core i7 5th/6th gen processors on the LGA 2011-3 socket.
- Accommodates up to 128GB DDR4 RAM across four DIMM slots, supporting 2133MHz/2400MHz speeds.
- Includes a PCIe 3.0 x16 slot for graphics cards and an M.2 slot compatible with NVME and NGFF SSDs.
- Features a Gigabit LAN port with a Realtek RTL8111H chip for 1000Mbps/s network speeds.
- Equipped with a 6-phase power supply and all-solid-state capacitors.
Cons
- Utilizes an outdated Intel HM55 chipset, which is typically a laptop chipset from an older generation, not designed for X99 platforms.
- Only provides 3 SATA 2.0 (3Gb/s) ports, which are slower than modern SATA 3.0 (6Gb/s).
- Limited to USB 2.0 ports (6 rear, 2 front headers), lacking faster USB 3.0 or newer standards.
- User reports indicate the motherboard functionally operates with only two memory channels despite having four DIMM slots, limiting memory bandwidth.
- The package does not include a user manual or a CR2032 CMOS battery.
Dimension Scores
The 6-phase power supply is adequate for entry-level to mid-range CPUs, but users report potential VRM temperature issues with higher TDP processors, suggesting it's average for its category.
The feature set is basic, with an outdated HM55 chipset, only SATA 2.0 ports, and no USB 3.0, placing it below average for an X99 motherboard.
It includes a PCIe 3.0 x16 slot and an M.2 slot for NVME SSDs, which are standard, but only one additional PCIe 2.0 x1 slot and limited SATA 2.0 ports keep it at category average.
The BIOS offers some controls like RAM timings and Resizable BAR, but critical memory timing options are hidden, overclocking may not work, and fan control is limited to 4-pin PWM fans, indicating below-average functionality.
Best For
- Budget-constrained home server builds using older Xeon E5 V3/V4 processors.
- Workstations for tasks that are not heavily reliant on high-speed storage or USB peripherals.
- Revitalizing older LGA 2011-3 CPUs for basic computing or specific, less demanding applications.
Not Recommended For
- Modern gaming rigs requiring high-speed I/O and robust power delivery for overclocking.
- Users needing fast data transfer with external drives or numerous USB 3.0/3.1 devices.
- Anyone expecting plug-and-play driver installation or comprehensive BIOS features for fine-tuning.
Watch Out For
- The HM55 chipset is an old laptop chipset, which can lead to unexpected compatibility or performance issues on an X99 platform.
- Onboard temperature sensors often display erratic readings, sometimes over 120°C, making accurate monitoring difficult (CPU's internal sensor is accurate).
- The stock BIOS hides critical memory timing controls, preventing manual RAM overclocking, though modified BIOS versions can unlock these features (at user risk).
- Users have reported significant driver issues, including non-functional Ethernet and audio, requiring extensive troubleshooting and potentially a USB Wi-Fi adapter.
- Some users experience 'no post' issues, with a chip getting very hot, even after trying multiple CPUs and RAM sticks.
Full Specifications
| ASIN | B0D5D6BGJ9 |
| Brand | MACHINIST |
| Platform | Windows |
| CPU Model | Intel Xeon |
| CPU Socket | LGA 2011-3 |
| Model Name | X99 PR9-H |
| Item Weight | 1.63 pounds |
| Chipset Type | Intel HM55 |
| Manufacturer | MACHINIST |
| Item model number | X99 PR9-H |
| Compatible Devices | Personal Computer, Server |
| Memory Clock Speed | 2400 MHz |
| Package Dimensions | 9.84 x 8.31 x 2.13 inches |
| Compatible Processors | Intel E5 V3 V4 Series CPUs |
| RAM Memory Technology | DDR4 |
What Buyers Say
This Machinist X99 PR9-H motherboard often presents a mixed bag for users, with some reporting it's 'ok' for home servers and a good value in certain regions. However, a recurring theme is the potential for driver headaches, with one user experiencing non-functional Ethernet and audio, needing a USB Wi-Fi adapter to get online. The use of an HM55 chipset, an old laptop component, is a significant concern, and some users have faced 'no post' issues where a chip overheats. While it supports a decent amount of DDR4 RAM, the functional limitation to dual-channel memory despite four physical slots is a disappointment.
“Man, this board is cheap, but you really get what you pay for. My Ethernet didn't even work out of the box, had to hunt for drivers and use a USB Wi-Fi stick just to get online. Plus, only USB 2.0? Seriously? It's fine if you just need something to boot an old Xeon, but don't expect anything modern or easy.”
Common Praise
- Supports a wide range of Intel Xeon E5 V3/V4 and Core i7 LGA 2011-3 CPUs.
- Offers 128GB DDR4 RAM capacity across four slots.
- Includes an M.2 slot for NVME SSDs.
- The price point is very low, making it accessible for extreme budget builds.
- Some users report it running 'rock solid' for years in home server applications.
Common Complaints
- The HM55 chipset is an outdated laptop chipset, not ideal for an X99 platform.
- Only has slow SATA 2.0 and USB 2.0 ports, lacking modern connectivity speeds.
- Functional limitation to dual-channel memory, despite having four physical DIMM slots.
- Significant driver compatibility issues, including non-functional Ethernet and audio for some users.
- BIOS has hidden memory timing controls and overclocking options that may not work.
- No user manual or CR2032 CMOS battery included in the package.
Ownership Tips
- Expect to spend time troubleshooting drivers, especially for network and audio, as they may not work out of the box.
- Consider purchasing a small fan for the VRM area if using a higher TDP CPU, as VRM temperatures can be a concern.
- Be prepared to source a CR2032 CMOS battery and download the user manual online, as they are not included.
- Don't rely on the onboard temperature sensors for accurate readings; use CPU-specific monitoring tools instead.
- If you plan on overclocking RAM, be aware that the stock BIOS might not allow it, and flashing a modified BIOS carries risks.
Frequently Asked Questions
What CPUs are compatible with this motherboard?
It supports Intel LGA2011-3 Socket CPU processors, including Intel i7 6950X/6900K/6850K/6800K/5960X/5930K/5820K, and Xeon E5 V3/V4 series CPUs like E5 1620/1680/2695/2696/4667/4669 V3 and E5 1607/2637/2690/2697/2699/4669 V4.
What type of RAM does it use and how much can it hold?
This motherboard uses DDR4 RAM and supports up to 128GB (4x32GB) at speeds of 2133MHz or 2400MHz. However, user reports suggest it functionally operates in dual-channel mode despite having four slots.
Does it have M.2 support for SSDs?
Yes, it has one M.2 slot that supports both NVME (PCIe protocol) and NGFF (SATA protocol) SSDs.
Are there any USB 3.0 ports?
No, the motherboard only features USB 2.0 ports (six on the back panel and two front panel headers). One internal header that looks like USB 3.0 is actually USB 2.0 specification.
Do I need to buy a separate CMOS battery or manual?
Yes, the package does not include a user manual or a CR2032 CMOS battery, so you will need to purchase the battery separately and download the manual online.
Buying Guide
When you're looking at motherboards like this, especially in the entry-level price band, you need to understand that you're making compromises. This isn't a board for a cutting-edge build. You're buying it to reuse older, powerful server CPUs like the Xeon E5 V3/V4 series. The key is managing your expectations regarding modern features and ease of use. You'll likely need to be comfortable with some DIY troubleshooting.
LGA 2011-3 Socket
This socket dictates which CPUs you can use. It's for Intel's older high-end desktop (HEDT) and server processors, specifically the Xeon E5 V3/V4 series and some Core i7s. If you have one of these chips, this is your entry point; otherwise, you'll need a compatible CPU.
Intel HM55 Chipset
This is a big one. The chipset is like the motherboard's control center. HM55 is an old laptop chipset, not designed for X99. It means you're getting very basic, older features like slow SATA 2.0 and USB 2.0, and it might limit overall performance or compatibility compared to a proper X99 (C612) chipset. Think of it like putting an old car engine in a newer car chassis – it works, but not optimally.
DDR4 Max 128GB (4*32GB)
This tells you the maximum amount and type of memory the board supports. 128GB is a lot, especially for server tasks, but the reported functional limitation to dual-channel memory means you won't get the full bandwidth of quad-channel, even with four sticks. It's like having a four-lane highway, but only two lanes are actually open.
M.2 Protocol
This means you can use modern, fast NVME SSDs, which is a huge plus for boot times and application loading compared to older SATA drives. It's one of the few modern features on this board that actually delivers on speed.
Alternatives
If you need faster storage (SATA 3.0), more USB 3.0 ports, or a more robust and stable platform with better BIOS features and driver support, look for an X99 motherboard with an Intel C612 chipset and native USB 3.0 connectivity.
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