Asus Prime B840M-A WIFI AM5 DDR5 mATX Motherboard

Asus Prime B840M-A WIFI - Description

AM5 DDR5 mATX Motherboard

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

Performance:

The motherboard features an AM5 socket supporting AMD Ryzen™ desktop processors and offers robust expansion with one PCIe 4.0 x16 slot (operating at x16 mode with SafeSlot Core+), and two PCIe 3.0 x16 slots (operating at x1 mode). It utilizes an 8+2+1 phase digital power design for stable power delivery and includes four DDR5 DIMM slots with dual-channel support. For storage, it offers three M.2 slots: two support PCIe 4.0 x4 (M.2_1 and M.2_2), and one supports PCIe 3.0 x4 (M.2_3), ensuring fast and flexible SSD connectivity.

Cooling:

The motherboard is equipped with comprehensive cooling features, including a VRM heatsink and a chipset heatsink for efficient heat dissipation. It provides multiple fan headers: one CPU fan header, one CPU OPT fan header, one AIO pump fan header, and a total of three chassis fan headers, ensuring optimal airflow and cooling support for various system configurations.

Flexibility:

This motherboard offers versatile connectivity with multiple ports and headers, including four USB 2.0 Type-A ports, two USB 10Gbps Type-A ports, one USB 5Gbps Type-C® port, and an additional USB 5Gbps header and connector for extra ports. It also includes two DisplayPorts, one HDMI™ port, and a BIOS FlashBack™ button. 

Customization:

The motherboard supports RGB lighting customization with a total of three Addressable Gen 2 headers, allowing connection to compatible RGB devices for synchronized lighting effects and advanced personalization.

AI Solutions:

ASUS AI Advisor brings expert-level insights into system tuning and optimization, making advanced motherboard features accessible and easy to understand.

AI Advisor:

ASUS AI Advisor helps users easily discover and understand the features and capabilities of ASUS motherboards through a clear and user-friendly interface.

Digital Power Design:

With its 8+2+1 phase power solution using discrete MOSFETs, the PRIME B840M-A WIFI ensures stable and efficient power delivery to support high-performance AMD CPUs under load.

Six-layer PCB design:

This multi-layered board helps dissipate heat from voltage regulators more effectively, enhancing system stability and providing greater overclocking potential for the CPU.

Power Saving:

Optimize energy efficiency through customizable settings that adjust CPU power limits, Aura lighting brightness, and fan profiles. Users can also enable Windows' built-in Power Saver plan for further electricity savings.

Digi+ VRM control:

Provides real-time adjustments for voltage regulation, including droop control, frequency switching, and power efficiency settings for better system tuning.

Enhanced Memory & Storage Performance

DDR5 Optimization:

Whether you're using basic or high-speed DDR5 RAM, the PRIME B840M-A WIFI offers extensive tuning options. For non-EXPO™ modules, ASUS AEMP automatically detects and applies optimized memory profiles. For advanced users, full EXPO™ support and detailed UEFI settings are available for fine-tuning.

Three M.2 slots (up to 64 Gbps):

With three M.2 slots — two supporting PCIe 4.0 (up to 64 Gbps) and one PCIe 3.0 — the motherboard enables faster boot times and application loading speeds.

Cooling

Cooler by design:

Thoughtfully engineered with multiple heatsinks and hybrid fan headers, the PRIME B840M-A WIFI maintains optimal temperatures and system stability even during heavy computing tasks.

Smart Cooling precision

ASUS Fan Xpert 2+:

ASUS Fan Xpert 2+ software offers full control over system fans. Its Auto-Tuning mode automatically adjusts settings with a single click, while the Extreme Quiet mode lowers chassis fan speeds below default minimums for near-silent operation during light workloads. Manual fan tuning is also possible via UEFI BIOS.

Cooler compatibility:

ASUS AIO coolers are designed to deliver high performance, excellent overclocking support, striking visuals, and customizable features—perfectly complementing the latest motherboards for building your ideal gaming PC.

Flexibility

Empowering connections:

This motherboard provides a wide array of connection options including built-in WiFi 6E, a PCIe 4.0 slot, and multiple USB ports—including Type-C®—for fast and flexible device integration.

WiFi 6E:

Equipped with WiFi 6E technology, this board taps into the new 6 GHz frequency band, offering triple the bandwidth of traditional 2.4/5 GHz bands. This results in faster wireless speeds, reduced congestion, and improved performance in environments with heavy wireless traffic.

Realtek 2.5 Gb Ethernet:

The integrated Realtek 2.5 Gb Ethernet port minimizes CPU usage and delivers high TCP and UDP throughput, ensuring smooth and rapid data transfers.

Front USB 5Gbps Type-C®:

A front-panel USB 5Gbps Type-C® connector enables lightning-fast file transfers at up to 5Gbps speeds.

Customization

Personalization:

The PRIME B840M-A WIFI enhances usability across the board—from simplifying BIOS navigation for beginners to providing advanced RGB lighting controls for a tailored system look.

UEFI BIOS:

The UEFI interface combines user-friendly setup tools for newcomers with deep customization features for experienced users.

ASUS GlideX:

Enjoy seamless multi-device screen sharing and control between PCs, tablets, and smartphones via wired or wireless connections, supporting cross-platform compatibility.

ASUS DriverHub:

Simplify driver maintenance with automatic detection and one-click updates, keeping your system running smoothly and efficiently.

Armoury Crate:

Manage ASUS hardware, customize Aura Sync RGB lighting, and stay updated with product news—all from a unified control center.

Aura Sync:

Experience full RGB lighting synchronization across compatible components for a visually stunning, cohesive build.

Addressable Gen 2 RGB headers:

Three Addressable Gen 2 RGB headers automatically detect the number of LEDs on connected devices, adjusting lighting effects accordingly for perfect synchronization.

DIY friendly:

The PRIME B840M-A WIFI motherboard includes EZ PC DIY features that make building a PC faster and easier, offering a more convenient experience for DIY users.

Q-Antenna:

Quickly and securely attach your WiFi antenna thanks to Q-Antenna technology. No more fiddling with screws—just snap it into place for reliable connectivity.

Pre-Mounted I/O Shield:

The factory-installed I/O shield protects rear ports, streamlines installation, improves system aesthetics, and makes the build process easier for DIY enthusiasts.

BIOS FlashBack:

Update your BIOS without needing a CPU or memory installed. Simply insert a FAT32-formatted USB drive containing the BIOS file into the dedicated FlashBack™ port and press a button.

SafeSlot Core+:

ASUS SafeSlot Core+ is a reinforced stainless-steel PCIe slot that protects against damage. Its secure hooks and strengthened solder points provide durable support for heavy graphics cards.

Q-LED Core:

During system startup, the Q-LED Core displays color-coded indicators to help diagnose boot issues quickly and accurately.

Build for the most advanced pc for gaming and creating:

When speed matters most, ASUS motherboards deliver. With support for ultra-fast dual-channel DDR5 memory, AMD EXPO™ technology, and PCIe 4.0 for both GPUs and NVMe storage, you can power through intensive games and creative projects alike—backed by the performance of ASUS engineering and AMD Ryzen™ 9000, 8000, and 7000 Series processors.

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