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Gigabyte A520I AC vs MACHINIST X99 LGA 2011-V3 Motherboard Support

Updated August 2026 — Gigabyte A520I AC wins on price and size, MACHINIST X99 LGA 2011-V3 Motherboard Support wins on memory.

The Gigabyte A520I AC offers superior features for AMD users, while the MACHINIST X99 provides excellent value for Intel builds.

Why Gigabyte A520I AC is better

Advanced Features

Better support for AMD Ryzen processors

Connectivity

Includes Intel Dual Band AC WiFi and Bluetooth

Compact Size

Mini-ITX form factor ideal for small builds

Why MACHINIST X99 LGA 2011-V3 Motherboard Support is better

Price

Cheaper option at $76.99

Memory Capacity

Supports up to 128GB of RAM

Processor Compatibility

Supports a wider range of Intel processors

Overall score

Gigabyte A520I AC
85
MACHINIST X99 LGA 2011-V3 Motherboard Support
76

Specifications

SpecGigabyte A520I ACMACHINIST X99 LGA 2011-V3 Motherboard Support
SocketAM4LGA 2011-3
RAM Slots2 DIMMs4 DIMMs
M.2 Slots13
WiFiYesOptional
LAN1GbEGigabit

Dimension comparison

Gigabyte A520I ACMACHINIST X99 LGA 2011-V3 Motherboard Support

Overview of the Gigabyte A520I AC

The Gigabyte A520I AC is priced at $99.99, making it a solid choice for those looking to build a system with an AMD Ryzen processor. This Mini-ITX motherboard supports 3rd Gen AMD Ryzen processors with an AM4 socket and features a direct 6 phases digital PWM power design with 55A DrMOS. Its compact size makes it ideal for smaller builds while still offering robust performance features.

This motherboard also supports dual-channel DDR4 memory with 2 DIMMs, providing flexibility for memory upgrades. With a PCIe 3.0 x16 slot and a dedicated NVMe PCIe 3.0 x4 M.2 slot, the A520I AC allows for fast storage solutions. Additionally, the inclusion of Intel Dual Band AC WiFi and Bluetooth enhances connectivity options, making it a well-rounded choice for gamers and general users alike.

Overview of the MACHINIST X99

The MACHINIST X99 LGA 2011-V3 motherboard is available for $76.99, which is about 17% cheaper than the Gigabyte A520I AC. This motherboard supports Intel Xeon E5 V3/V4 series processors and Core i7 5th and 6th generation CPUs, providing a broader compatibility range for users who might already own compatible Intel processors.

The X99 offers a more extensive memory capability with 4-channel DDR4 slots, allowing for up to 128GB of RAM using 32GB modules. Additionally, it features three NVMe M.2 slots and one PCIe 3.0 x16 slot, giving users plenty of options for expansion. With its robust heat dissipation design, the MACHINIST X99 is tailored for high-performance tasks, making it a strong contender for workstation builds.

Performance Capabilities: Gigabyte A520I AC

The performance capabilities of the Gigabyte A520I AC are impressive for its size and price. It is designed to optimize the performance of AMD Ryzen processors and features an optimized VRM heatsink, ensuring efficient power delivery. The direct 6 phases digital PWM with 55A DrMOS contributes to its stability, especially during demanding tasks.

The motherboard's ability to support dual-channel DDR4 memory enables better bandwidth, which is crucial for gaming and content creation. With its PCIe 3.0 x16 slot and a fast NVMe PCIe 3.0 x4 M.2 slot, users can expect quick load times and improved overall system responsiveness. The inclusion of multiple display outputs (2 HDMI and a DisplayPort) allows for versatile monitor setups, benefiting gamers and multitaskers alike.

Performance Capabilities: MACHINIST X99

In contrast, the MACHINIST X99 motherboard excels in performance for users looking to maximize their Intel processor capabilities. It supports a wide range of Intel Xeon E5 processors and Core i7 CPUs, leading to high-performance computing tasks suitable for both gaming and professional applications.

The four-channel DDR4 memory capability is a significant advantage, enabling users to install up to 128GB of RAM, which is a considerable asset for memory-intensive tasks like video editing and 3D rendering. With three NVMe M.2 slots, the X99 allows for various high-speed storage configurations, ensuring that data transfer speeds are optimal. Its robust design, including a dedicated cooling system, ensures stability during extended usage, making it ideal for workstation environments.

Connectivity Options: Gigabyte A520I AC

The connectivity options on the Gigabyte A520I AC are comprehensive for a Mini-ITX motherboard. It includes Intel Dual Band AC WiFi and Bluetooth, enhancing wireless connectivity and convenience for users who prefer a clutter-free setup. The presence of a blazing fast 1GbE LAN port ensures that wired connections are equally fast, which is vital for online gaming or streaming.

Additionally, the motherboard supports a variety of display outputs, including two HDMI ports and a DisplayPort, catering to users with multiple monitor setups. This range of connectivity options makes it a versatile choice for users who require both wired and wireless solutions while supporting high-resolution displays.

Connectivity Options: MACHINIST X99

The MACHINIST X99 LGA 2011-V3 motherboard also offers a variety of connectivity options, although its primary focus is on wired connections. The built-in Gigabit LAN interface provides stable and fast internet access, which is essential for online gaming and streaming. The motherboard includes a dedicated WiFi M.2 slot, allowing users to easily add WiFi capabilities if needed.

While it lacks the same number of display outputs as the Gigabyte A520I AC, it still provides adequate options for users who primarily work with conventional monitor setups. The focus on M.2 NVMe slots enhances storage options, allowing for the installation of high-speed drives for optimal performance.

Price Comparison: Gigabyte A520I AC vs. MACHINIST X99

When it comes to pricing, the Gigabyte A520I AC retails for $99.99, while the MACHINIST X99 is priced at $76.99. This makes the MACHINIST X99 approximately 17% cheaper than the Gigabyte A520I AC. For users on a tighter budget or those who already have compatible Intel processors, the MACHINIST X99 provides excellent value without sacrificing performance.

However, the Gigabyte A520I AC justifies its higher price with its advanced features designed specifically for AMD processors, optimized power delivery, and superior connectivity options. Buyers should consider their specific needs, such as processor compatibility and desired features, when evaluating which motherboard provides better value for their investment.

Which should you buy?

Choosing between the Gigabyte A520I AC and the MACHINIST X99 ultimately depends on your specific needs and preferences. If you're building a system around an AMD Ryzen processor and prioritize features like dual-channel memory and advanced wireless connectivity, the Gigabyte A520I AC is a robust option worth the extra cost. On the other hand, if you're inclined towards Intel processors and require extensive memory support for demanding applications, the MACHINIST X99 offers excellent value at a lower price. Consider your processor choice, intended use, and budget to make the best decision for your build.