MSI Pro B840M-B Motherboard, mATX – Supports AMD Ryzen 9000/8000/7000 Processors, AM5 – DDR5 Memory Boost (8000+ MT/s OC), PCIe 4.0 x16, M.2 Gen4, 2.5G LAN

The MSI PRO B840M-B is engineered for the 2026 computing landscape. Built on the AMD B840 chipset, it serves as a robust successor to the A620, providing superior power delivery and stability for the AMD Ryzen™ 9000 series processors. This motherboard is “AI-Ready,” featuring Core Boost technology and a 6-layer PCB with 2oz thickened copper to ensure consistent performance during heavy computational tasks, large data transfers, and AI-driven creative workflows.

Speed is the defining characteristic of the PRO B840M-B. It supports DDR5 memory with overclocking speeds reaching a staggering 8000+ MT/s (OC). MSI’s Memory Boost technology utilizes a fully-isolated circuit to deliver pure data signals, minimizing latency and maximizing bandwidth. With support for AMD EXPO™ profiles and a specialized High-Efficiency Mode in the BIOS, users can unlock the full potential of their RAM with a single click, essential for high-speed gaming and professional renderin

Connectivity is handled by a Realtek 2.5Gbps LAN controller, delivering 2.5x the speed of standard Gigabit Ethernet—perfect for NAS backups and high-bandwidth internet. Storage is equally fast with Dual Lightning Gen 4 M.2 slots (64Gbps). To simplify the building process, MSI has integrated EZ DIY features, including the EZ M.2 Clip II and EZ PCIe Clip II, allowing you to install SSDs and heavy GPUs without the need for traditional screws or complex locking mechanisms.

The primary PCIe 4.0 x16 slot is reinforced with MSI Steel Armor, which is secured to the motherboard with extra solder points to support the weight of heavy modern graphics cards while shielding against electromagnetic interference. The Frozr AI Cooling system monitors temperatures in real-time, automatically adjusting system fans for a silent yet cool workstation environment.