Gigabyte B840M Eagle WiFi6 AM5 Micro-ATX DDR5 Motherboard
GIGABYTE
Gigabyte B840M Eagle WiFi6 AM5 Micro-ATX DDR5 Motherboard
The Gigabyte B840M Eagle WiFi6 is a Micro-ATX motherboard for AMD Ryzen 7000, 8000, and 9000 series processors, combining DDR5 memory support with integrated Wi-Fi 6 and 2.5GbE networking. It suits builders balancing performance and compact form factor, solving the constraint of fitting a full-featured board into smaller cases without sacrificing connectivity.
Why this product
Wi-Fi 6 and 2.5GbE LAN
Integrated Realtek Wi-Fi 6 (802.11ax) with dual-band support up to 2.4 Gbps and 5 Gbps, plus Bluetooth 5.3, combines with a 2.5 Gigabit Ethernet port for fast wired or wireless connectivity.
DDR5 memory with overclocking
Supports DDR5 modules up to 7600 MT/s (overclocked) and AMD EXPO for optimized performance, with a maximum of 128 GB across two DIMM slots.
Dual M.2 NVMe storage
One PCIe 4.0 M.2 slot for maximum speed and one PCIe 3.0 slot, plus four SATA connectors with RAID 0, 1, and 10 support.
Four fan headers with dual curves
Total of four PWM/DC fan headers with independent dual fan curve mode for flexible cooling management across CPU and system fans.
Compact Micro-ATX form factor
Measures 244 × 244 mm, fitting smaller and mid-range cases while retaining a full feature set including RGB and ARGB headers.
- Form FactorMicro-ATX (244 × 244 mm)
- SocketAMD AM5
- ChipsetAMD B840
- Memory SupportDDR5 up to 7600 MT/s (O.C.), 128 GB max
- NetworkingWi-Fi 6 (802.11ax), 2.5GbE LAN, Bluetooth 5.3
- Storage2 M.2 (1× PCIe 4.0, 1× PCIe 3.0), 4× SATA
- GPU Slots1× PCIe 4.0 x16 (CPU), 1× PCIe 3.0 x4
- SKUGIG-1888
- EAN4719331868970
- Fits AMD Socket AM5 processors: Ryzen 9000, 8000, and 7000 series. Check Gigabyte's official CPU support list for your specific model.
- Supports DDR5 DIMM modules in non-ECC, unbuffered configurations (1Rx8, 2Rx8, 1Rx16) with speeds from 4400 to 7600 MT/s.
- Accepts standard ATX power supplies via 24-pin main connector and 8-pin CPU power, plus standard tower coolers via dedicated CPU fan headers.
- PCIe slot support varies by CPU: Ryzen 9000/7000 run the x16 slot at PCIe 4.0 x16, Ryzen 8000-Phoenix 1 at x8, and Phoenix 2 at x4.
- Memory overclocking and XMP/EXPO performance may vary; consult the qualified vendor list (QVL) for compatibility confirmation.
Best for
- Compact builds and smaller cases that need full AM5 compatibility without sacrificing storage or connectivity.
- Builders prioritizing Wi-Fi 6 and 2.5GbE networking without adding discrete cards or USB adapters.
- DDR5 and fast NVMe storage enthusiasts wanting EXPO support and dual M.2 slots within a Micro-ATX footprint.
- Users who need RGB and ARGB lighting control with three LED headers built into the board.
Trade-offs
- Builders requiring more than one PCIe x16 GPU slot; this board offers only one full-length slot.
- Those needing extensive expansion; only one additional PCIe 3.0 x4 slot beyond the main GPU slot.
- Systems requiring more than four SATA drives; the board provides exactly four SATA connectors.
- Users who prefer Wired-only networking; Wi-Fi 6 cannot be disabled and adds cost even if not needed.
X3D Turbo Mode · D5 Bionic Corsa · Zenith-Memory · Steady Power · THERMAL · DIY-FRIENDLY · CONNECTIVITY · ULTRA DURABLE · SOFTWARE
EAGLE motherboards boost DDR5 memory performance and offer top-notch compatibility using various advanced methods.
Eagle Series with steady power keeps your AI operation smooth. Delivers consistent, high-powered performance to elevate your overclocking to the next level. Unlock the full power of your multi-core CPU for unmatched performance. Optimized for integrated GPU performance and memory management within the CPU. Deliver reliable power to your CPU-connected PCIe lanes for uninterrupted performance.
Advanced full-metal thermal design and durable heatsinks to keep your system cool and efficient. With up to 4 times the surface area of traditional coolers, this advanced design significantly boosts MOSFET cooling performance.
Experience ultimate connectivity with next-generation network, storage, and Wi-Fi solutions, delivering lightning-fast data transfer speeds. Supercharge your gaming with 2.5GbE LAN — achieve lightning-fast speeds, minimal lag, and unbeatable performance to elevate your gaming setup and dominate the competition.
The Wireless solution 802.11ax Wi-Fi 6 enables gigabit wireless performance, provides smooth video streaming, better gaming experience, few dropped connections and speeds up to 2.4Gbps and 5Gbps. Moreover, Bluetooth 5 provides 4X range over BT 4.2 and with faster transmission.
These high quality capacitors help deliver high resolution and high fidelity audio to provide the most realistic sound effects.
- 2X Copper PCB
- Premium Choke and Capacitor
- 24 pin ATX Power Connector
- 8 pin CPU with UD Solid Pin
- 1 x PCIe 4.0 M.2 Slot
- 1 x PCIe 3.0 M.2 Slot
- 1 x PCIe 4.0 x16 slot
- 1 x PCIe 3.0 x4 slot
- 5 W/mk Thermal Pad
- Integrated IO Shield
- Total 4* PWM / DC Fan Headers
- Dual Fan Curve Mode
- 8-CH HD Audio
- High-End Audio Capacitor
- 1 x RGB LED Header
- 2 x ARGB LED Headers
- Debug LEDs
* Memory overclocking and XMP/EXPO support may vary. Please refer to the qualified vendor list (QVL) for details and note that product features may vary by model.
* The information provided is for reference; please prioritize your specific setup and specifications.
General
| Brand | Gigabyte |
|---|---|
| Model | B840M Eagle WiFi6 |
| Chipset | AMD B840 |
Networking
| LAN Standard | Realtek 2.5GbE (2.5 Gbps/1 Gbps/100 Mbps) |
|---|---|
| Wi-Fi Standard | 802.11ax Wi-Fi 6 (2.4 GHz / 5 GHz) |
| Wi-Fi Throughput | Up to 2.4 Gbps (2.4 GHz) and 5 Gbps (5 GHz) |
| Bluetooth | Bluetooth 5.3 |
| Wi-Fi Antenna | 2× SMA connectors (2T2R) |
Performance & Memory
| CPU Socket | AMD Socket AM5 |
|---|---|
| Supported CPUs | AMD Ryzen 9000, 8000, and 7000 series processors |
| Memory Type | DDR5 DIMM |
| Memory Slots | 2 |
| Max Memory | 128 GB |
| Memory Speeds | DDR5 4400 to 7600 MT/s |
| Memory Features | AMD EXPO support |
Ports & Power
| PCIe x16 Slot | 1× PCIe 4.0 x16 (from CPU) |
|---|---|
| PCIe x4 Slot | 1× PCIe 3.0 x4 |
| M.2 Slots | 1× PCIe 4.0 (CPU), 1× PCIe 3.0 (Chipset) |
| SATA Ports | 4× SATA 6 Gb/s |
| Rear USB Ports | 2× USB 3.2 Gen 1, 4× USB 2.0/1.1 |
| Internal USB Headers | 1× USB Type-C 3.2 Gen 1, 1× USB 3.2 Gen 1, 2× USB 2.0/1.1 |
| Display Output | 1× DisplayPort (HDMI 2.1), 1× HDMI (HDMI 2.1) |
| Audio Jacks | 3× on rear panel |
| Fan Headers | 4 total: 1× CPU, 1× CPU/pump, 1× system, 1× system/pump (PWM/DC, dual curve mode) |
| RGB Headers | 1× RGB, 2× ARGB Gen2 |
| Power Connectors | 1× 24-pin ATX, 1× 8-pin CPU |
Audio & Cooling
| Audio Codec | Realtek ALC892/ALC897 |
|---|---|
| Audio Channels | 8-CH HD |
| Thermal Pad | 5 W/mk |
Physical
| Form Factor | Micro-ATX |
|---|---|
| Dimensions | 244 × 244 mm |
| PCB Layers | 2× Copper PCB |
Software
| BIOS Features | Q-Flash, Q-Flash Plus, Smart Backup |
|---|---|
| Supported OS | Windows 10 64-bit, Windows 11 64-bit |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.