Gigabyte B840M D2H AM5 Micro-ATX DDR5 Motherboard
GIGABYTE
Gigabyte B840M D2H AM5 Micro-ATX DDR5 Motherboard
The Gigabyte B840M D2H is a budget-friendly AM5 micro-ATX motherboard for builders pairing Ryzen 7000, 8000 or 9000 series processors with DDR5 memory. It handles gaming and productivity builds on a compact footprint with solid core features: PCIe 4.0 storage support, 2.5 GbE networking, and dual M.2 slots.
Why this product
Compact micro-ATX form factor
Fits smaller PC cases and ITX builds without sacrificing core features like dual M.2 slots and four SATA ports.
PCIe 4.0 NVMe support
One M.2 slot runs at PCIe 4.0 x4 speeds for fast storage; a second slot offers PCIe 3.0 x2 for expandability.
DDR5 and EXPO memory ready
Supports AMD EXPO and XMP memory profiles up to DDR5-7600 (overclocked), with 2 DIMM slots up to 128 GB total.
2.5 GbE wired networking
Realtek controller delivers faster Ethernet than older gigabit standards, useful for file transfers and online gaming.
Solid power delivery for mid-range chips
5+2+2 phase VRM handles Ryzen 7000/8000/9000 series without heavy overclocking needs.
- Form FactorMicro-ATX
- SocketAMD AM5
- ChipsetAMD B840
- Memory SupportDDR5 up to 128 GB (DDR5-7600 OC)
- M.2 Slots2 (1× PCIe 4.0, 1× PCIe 3.0)
- SATA Ports4 × SATA 6 Gb/s
- NetworkingRealtek 2.5 GbE LAN
- Display OutputHDMI 2.1
- SKUGIG-1837
- EAN4719331868116
- Fits AMD Ryzen 9000, 8000 and 7000 series processors in the AM5 socket.
- Accepts DDR5 memory modules; supports both standard and AMD EXPO overclocked profiles.
- Accepts NVMe M.2 SSDs in both slots and SATA SSDs or hard drives in any of the four SATA ports.
- PCIe x16 slot can run at x16, x8 or x4 depending on CPU and whether the x4 slot is populated; check manual for your specific setup.
- Not compatible with AM4 processors or older Ryzen generations before 7000 series.
- Not compatible with DDR4 memory.
Best for
- Budget gaming builds with Ryzen 5 or 7 chips
- Small-form-factor PCs and compact case builds
- Creators who need dual fast storage but want to keep costs down
- Networked productivity workstations needing 2.5 GbE connectivity
Trade-offs
- Extreme overclocking: the 5+2+2 phase VRM is solid for stock and mild tuning but not built for sustained heavy overclocking.
- High-end GPU setups: the secondary PCIe slot runs at x4 and the primary can throttle to x8, limiting bandwidth for dual-GPU or high-end multi-card builds.
- Legacy storage upgrades: only four SATA ports; older systems with many drives may outgrow the capacity.
- Builders avoiding overclocking: the second M.2 slot tops out at PCIe 3.0 x2; buyers wanting all storage at PCIe 4.0 speeds should upgrade.
AMD Socket AM5 : Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Processors · Digital 5+2+2 phases VRM solution · Dual Channel DDR5 : 2*DIMMs with AMD EXPO™ Memory Module Support · EZ-Latch : PCIe x16 Slot with Quick Release Design · Friendly UI : Multi-Theme, AIO Fan Control, and Q-Flash Auto Scan in BIOS and SW · Ultra-Fast Storage : 2*M.2 slots, including 1* PCIe 4.0 x4 · Fast Networking : 2.5GbE LAN
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.
* The terms HDMI, HDMI High-Definition Multimedia Interface, HDMI Trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. * Product specifications and product appearance may differ from country to country.
General
| Brand | GIGABYTE |
|---|---|
| Model | B840M D2H |
| Form Factor | Micro-ATX |
CPU & Memory
| CPU Socket | AMD AM5 |
|---|---|
| Supported CPUs | AMD Ryzen 9000, 8000, 7000 series |
| Memory Type | DDR5 |
| Memory Slots | 2 × DIMM |
| Maximum Memory | 128 GB |
| Memory Speeds | DDR5-4400 to DDR5-7600 (overclocked) |
| Memory Profiles | AMD EXPO, XMP |
| VRM Phases | 5+2+2 |
Storage & Expansion
| M.2 Slots | 2 |
|---|---|
| M.2 Slot 1 (CPU) | PCIe 4.0 x4, type 2580/2280 |
| M.2 Slot 2 (Chipset) | PCIe 3.0 x2, type 2280 |
| SATA Ports | 4 × 6 Gb/s |
| RAID Support | RAID 0, 1, 5, 10 (NVMe); RAID 0, 1, 10 (SATA) |
| PCIe Slots | 1 × PCIe 4.0 x16 (CPU, runs x16/x8/x4), 1 × PCIe 3.0 x4 |
Connectivity & I/O
| Rear USB 3.2 Gen 1 | 2 ports |
|---|---|
| Rear USB 2.0 | 4 ports |
| LAN | Realtek 2.5 GbE |
| Display Outputs | 1 × HDMI 2.1 |
| Audio Jacks | 3 |
| Fan Headers | 3 (CPU, CPU/pump, system) |
| RGB Headers | 2 × Addressable RGB Gen2, 1 × RGB strip |
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.