Gigabyte B840 Eagle WiFi 6E AM5 ATX Motherboard - DDR5
GIGABYTE
Gigabyte B840 Eagle WiFi 6E AM5 ATX Motherboard - DDR5
The Gigabyte B840 Eagle WiFi 6E AM5 ATX Motherboard - DDR5 is designed for builders who want AMD Ryzen 9000, 8000 and 7000 series platform performance without moving to a flagship chipset. It addresses the common pain points of limited connectivity, slow storage, and memory headroom by pairing Wi-Fi 6E, 2.5GbE LAN, three M.2 slots, and DDR5 support up to 8200 MHz (O.C.) on a full-size ATX layout.
Why this product
X3D Turbo Mode for one-click gaming gains
GIGABYTE's BIOS feature applies unique optimisation parameters so that Ryzen 9000 non-X3D processors can reach gaming performance levels closer to their X3D counterparts, with no manual tuning required.
DDR5 memory up to 8200 MHz (O.C.)
Four DIMM slots support up to 256 GB of DDR5 with AMD EXPO and XMP profiles, and the D5 Bionic Corsa and Zenith-Memory technologies are designed to improve stability and performance at higher frequencies.
Three M.2 slots for fast NVMe storage
Two PCIe 4.0 x4 M.2 slots and one PCIe 3.0 M.2 slot give builders room for a primary drive and two additional SSDs, with M.2 Thermal Guard included to manage drive temperatures.
Wi-Fi 6E and 2.5GbE for fast network options
The onboard Wi-Fi 6E (802.11ax) covers 2.4, 5 and 6 GHz bands alongside Bluetooth 5, while the 2.5GbE LAN port delivers a wired connection with headroom beyond standard Gigabit.
Advanced thermal and power design
An 8+2+2 digital VRM with VRM Thermal Armor Advanced and a 2X Copper PCB help maintain stable power delivery under sustained load, and six PWM/DC fan headers let builders manage airflow across the system.
Q-Flash Plus for BIOS updates without a CPU
Store a renamed BIOS file on a FAT32 USB drive, insert it into the Q-Flash Plus port and press the button — the board updates itself without a processor or memory installed.
- SocketAMD AM5
- ChipsetAMD B840
- Memory4× DDR5, up to 256 GB, up to 8200 MHz (O.C.)
- Storage2× PCIe 4.0 M.2, 1× PCIe 3.0 M.2, 4× SATA 6 Gb/s
- WirelessWi-Fi 6E (802.11ax), Bluetooth 5
- LAN2.5GbE
- Form FactorATX, 30.5 cm × 24.4 cm
- Warranty3 years
- SKUGIG-1843
- EAN4719331876975
- Fits AMD Socket AM5 — supports Ryzen 9000, Ryzen 8000 and Ryzen 7000 series processors (check GIGABYTE's current CPU support list for specific models).
- Accepts standard DDR5 DIMM modules; up to 64 GB per slot and 256 GB total across four slots.
- Standard ATX form factor (30.5 cm × 24.4 cm) — fits any case rated for ATX motherboards.
- Integrated I/O shield is pre-installed, so no separate rear-panel bracket is needed.
- Memory overclocking, XMP and EXPO support may vary by module; consult GIGABYTE's Qualified Vendor List (QVL) before purchasing RAM.
- Does not support AMD AM4 processors — this socket is AM5 only.
Best for
- AMD Ryzen 9000/8000/7000 builders who want a feature-rich B840 board with Wi-Fi 6E and 2.5GbE without paying for a higher chipset.
- Gamers who want to extract more performance from non-X3D Ryzen processors using the built-in X3D Turbo Mode BIOS feature.
- Storage-heavy builds that need multiple NVMe drives, given the three M.2 slots plus four SATA 6 Gb/s connectors.
- Content creators and heavy multitaskers who need a large DDR5 capacity — up to 256 GB across four slots.
- Builders who want lighting control, with one RGB and three ARGB headers alongside six fan headers for a fully managed system.
Trade-offs
- Intel platform builds — this board uses AMD Socket AM5 exclusively and is incompatible with any Intel processor.
- DDR4 memory owners — only DDR5 modules are supported; existing DDR4 kits cannot be used.
- ECC registered memory configurations — the board supports only non-ECC Un-buffered DIMM modules.
- Compact or small-form-factor cases — at 30.5 cm × 24.4 cm, this is a full ATX board and will not fit Micro-ATX or Mini-ITX enclosures.
- Buyers needing a secondary GPU slot at PCIe 4.0 bandwidth — the second expansion slot runs at PCIe 3.0 x4, not PCIe 4.0.
Unleash New Era Gaming Performance with One-Click Activation. X3D Turbo Mode's unique optimization parameters allow even Ryzen™ 9000 X3D gaming Performance enhance & Ryzen™ 9000 non-X3D processors to achieve similar gaming performance levels as their Ryzen™ X3D counterparts. Experience smoother gameplay, higher frame rates, and reduced latency with GIGABYTE's BIOS innovation- X3D Turbo Mode.
EAGLE motherboards boost DDR5 memory performance and offer top-notch compatibility using various advanced methods. * 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.
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.
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. Wi-Fi 6E bring you the Ultimate VR experience!
Ultra-Fast Storage: 3*M.2 slots, including 2* PCIe 4.0 x4. Efficient Thermal: VRM Thermal Armor Advanced & M.2 Thermal Guard.
Download the motherboard's BIOS file, rename it to 'gigabyte.bin', and store it on a FAT32-formatted USB drive. Insert the drive into the Q-FLASH PLUS USB port. Press the Q-FLASH PLUS button to trigger automatic BIOS updating.
General
| Brand | GIGABYTE |
|---|---|
| Chipset | AMD B840 |
| Socket | AMD AM5 |
| Supported CPUs | AMD Ryzen 9000 / 8000 / 7000 Series |
| Form Factor | ATX |
| Dimensions | 30.5 cm × 24.4 cm |
| Operating System | Windows 11 64-bit, Windows 10 64-bit |
| Warranty | 3 years |
Performance
| Memory Slots | 4× DDR5 DIMM |
|---|---|
| Max Memory | 256 GB (64 GB per DIMM) |
| Memory Speed | Up to 8200 MHz (O.C.); standard: 4800 / 5200 MT/s |
| Memory Profile Support | AMD EXPO, XMP |
| Memory Architecture | Dual channel |
| Power Phase | 8+2+2 digital VRM |
| PCB | 2X Copper PCB |
| Expansion Slots | 1× PCIe 4.0 x16, 1× PCIe 3.0 x4, 2× PCIe 3.0 x1 |
Networking
| Standard | Wi-Fi 6E (802.11ax) |
|---|---|
| Frequency Bands | 2.4 GHz, 5 GHz, 6 GHz |
| Bluetooth | Bluetooth 5 |
| LAN | 2.5GbE |
Ports & Connectivity
| M.2 Slots | 2× PCIe 4.0 x4, 1× PCIe 3.0 |
|---|---|
| SATA | 4× SATA 6 Gb/s |
| USB (rear) | Includes USB-C 3.2 Gen 2 |
| Display Output | 1× DisplayPort 1.4 (up to 3840×2160@144 Hz), 1× HDMI 2.1 (up to 4096×2160@60 Hz) |
| Audio | Realtek 8-channel HD Audio with high-end audio capacitor |
| Fan Headers | 6× PWM/DC |
| RGB Headers | 1× RGB, 3× ARGB |
| Q-Flash Plus | Yes — BIOS update without CPU or memory installed |
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.