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ASRock AMD B850i Lightning WiFi 6E Socket AM5 vs Gigabyte A520I AC

Updated August 2026 — ASRock AMD B850i Lightning WiFi 6E Socket AM5 leads on power and connectivity.

The ASRock AMD B850i Lightning offers superior performance and features compared to the Gigabyte A520I AC, making it the better choice for high-end builds.

Why ASRock AMD B850i Lightning WiFi 6E Socket AM5 is better

Processor Support

Supports latest AMD Ryzen 9000/8000/7000 series.

Memory Speed

Supports DDR5 memory up to 8200+ MHz.

Networking

Features Killer 2.5G LAN and WiFi 6E.

Why Gigabyte A520I AC is better

Price

More affordable at $99.99.

Basic Functionality

Sufficient for casual users.

Legacy Support

Compatible with older 3rd Gen Ryzen processors.

Overall score

ASRock AMD B850i Lightning WiFi 6E Socket AM5
85
Gigabyte A520I AC
70

Specifications

SpecASRock AMD B850i Lightning WiFi 6E Socket AM5Gigabyte A520I AC
ProcessorRyzen 9000/8000/70003rd Gen Ryzen
MemoryDDR5 8200+ MHzDDR4
StorageDual M.2 PCIe 5.01 M.2 PCIe 3.0
LANKiller 2.5G1GbE
WiFiWiFi 6EIntel Dual Band AC

Dimension comparison

ASRock AMD B850i Lightning WiFi 6E Socket AM5Gigabyte A520I AC

Overview of the ASRock AMD B850i Lightning and Gigabyte A520I AC

The ASRock AMD B850i Lightning is priced at $179.99, while the Gigabyte A520I AC is significantly cheaper at $99.99, making it about 44% less expensive. However, the two motherboards cater to different user needs and preferences, particularly in terms of compatibility with processors and overall features.

The ASRock model supports the latest AMD Ryzen 9000/8000/7000 series processors, while the Gigabyte board is compatible with the 3rd Gen AMD Ryzen processors using the AM4 socket. This fundamental difference in processor support is critical for consumers looking to build or upgrade their systems.

Design and Form Factor

The ASRock AMD B850i Lightning features a Mini-ITX compact design measuring 170x170mm, suitable for small form factor builds. In contrast, the Gigabyte A520I AC also adopts a Mini-ITX form factor, making both motherboards suitable for tight spaces.

Both designs are ideal for users looking to create a compact gaming or workstation setup, but the ASRock's more advanced design allows for better performance and power delivery, which could be essential for high-performance builds.

Power Delivery and VRM

The ASRock AMD B850i Lightning boasts a premium power delivery system with a 10+1+1 phase design and a 110A Smart Power Stage. This allows for stable performance even under heavy loads, catering to overclockers and heavy users alike. On the other hand, the Gigabyte A520I AC features a Direct 6 Phases Digital PWM with 55A DrMOS.

While both motherboards provide solid power delivery, the ASRock model's more advanced system offers better headroom for performance tuning, making it a better choice for those who prioritize overclocking and high-performance computing.

Memory Support

In terms of memory, the ASRock AMD B850i Lightning supports dual-channel DDR5 configurations, accommodating speeds up to 8200+ (OC) MHz across two DIMM slots. This is a significant advantage for users looking to maximize memory performance and speed.

Conversely, the Gigabyte A520I AC supports dual-channel DDR4 memory with two DIMM slots. While still capable, DDR4 is generally slower compared to DDR5, which could impact performance in memory-intensive applications.

Storage and Expansion Options

The ASRock model includes dual ultra-fast storage options with both Blazing M.2 (PCIe Gen5x4) and Hyper M.2 (PCIe Gen4x4) slots, allowing for maximum storage performance and versatility. In contrast, the Gigabyte A520I AC has one NVMe PCIe 3.0 x4 M.2 slot and a PCIe 3.0 x16 slot for graphics cards.

The ASRock clearly offers more advanced storage capabilities, making it the better choice for users looking to leverage the latest storage technologies for faster load times and improved system responsiveness.

Networking Features

Networking capabilities differ significantly between the two motherboards. The ASRock AMD B850i Lightning features Killer 2.5G LAN and WiFi 6E with Bluetooth, providing premium wired and wireless connectivity. This is particularly beneficial for gamers and streamers who require low latency and high-speed internet connections.

On the other hand, the Gigabyte A520I AC includes Intel Dual Band AC WiFi and Bluetooth, along with a Blazing Fast 1GbE LAN connection. While sufficient for general use, it does not match the performance offered by the ASRock model, especially for high-demand networking environments.

Compatibility and Support

The ASRock AMD B850i Lightning is designed for the latest AMD Ryzen processors, ensuring its longevity and relevance in high-performance computing. It also requires a compatible small form factor case, which is a consideration for potential users.

The Gigabyte A520I AC supports older 3rd Gen AMD Ryzen processors, which may limit its appeal to those wanting the latest technology. However, it is a solid choice for budget-conscious users or those upgrading from previous generation systems.

Which should you buy?

Choosing between the ASRock AMD B850i Lightning and the Gigabyte A520I AC ultimately depends on your specific needs and budget. If you’re looking for cutting-edge performance, advanced features, and support for the latest AMD processors, the ASRock model is worth the investment at $179.99.

However, if you are on a tighter budget and only require basic functionality for older processors, the Gigabyte A520I AC at $99.99 is an excellent choice. It offers solid performance for casual users, making it a more accessible option for everyday computing tasks.