Description
The ASUS PRIME B840M-A WIFI is designed for users who want a modern AM5 motherboard without paying for a load of pointless high-end extras they may never use. Built around the AMD B840 chipset, it supports AMD Ryzen 7000, 8000, and 9000 Series desktop processors, making it suitable for a wide range of builds including mainstream gaming PCs, work systems, and home productivity machines. Its micro-ATX form factor allows it to fit into more compact cases while still offering enough features and expansion to build a capable modern desktop.
Memory support is handled through four DDR5 DIMM slots in a dual-channel configuration, giving the board better upgrade flexibility than cheaper two-slot designs. This makes it easier to start with a smaller memory kit and expand later without replacing everything. For storage, the board includes multiple M.2 slots for high-speed NVMe SSDs as well as SATA ports for larger storage drives, making it practical for users who want a fast boot drive, game library storage, and extra space for files or media.
Connectivity is one of the stronger points of this board. Built-in WiFi 6E provides fast wireless networking on supported networks, while the 2.5Gb Ethernet port gives it a better wired networking option than older entry-level boards stuck on standard Gigabit speeds. This makes it a good fit for users who game online, transfer large files, or just want more modern networking without needing separate add-in cards.
The board also includes modern display outputs for use with supported processors that have integrated graphics, along with PCIe 4.0 support for the main graphics slot. ASUS rounds things out with practical thermal and build features such as VRM cooling, chipset cooling, multiple fan headers, and lighting support for users who want a cleaner custom build. Overall, this is a sensible motherboard for anyone building on AMD’s AM5 platform and wanting a compact board with current-generation features, decent storage flexibility, and proper networking.
Specifications
Chipset: AMD B840
Socket: AMD AM5
CPU Support:
AMD Ryzen 9000 Series desktop processors
AMD Ryzen 8000 Series desktop processors
AMD Ryzen 7000 Series desktop processors
Form Factor:
Micro-ATX
Memory Support:
4 x DDR5 DIMM slots
Dual-channel memory architecture
Supports memory overclocking
AEMP memory tuning support
Expansion Slots:
1 x PCIe 4.0 x16 slot
Additional PCIe slots for expansion cards
Storage:
3 x M.2 slots
4 x SATA 6Gb/s ports
Networking:
WiFi 6E
2.5Gb Ethernet
Display Outputs:
1 x DisplayPort
1 x HDMI
USB Connectivity:
Rear USB Type-A connectivity
Front USB Type-C support
Cooling and Design Features:
8+2+1 phase power design
VRM heatsink
Chipset heatsink
Multiple fan headers
AIO pump header
Aura Sync lighting support
