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Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX

Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
36 mo.
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
R2,819
The GIGABYTE B840M DS3H WIFI6 micro ATX motherboard supports AMD Ryzen 9000 series processors using Socket AM5 and is built on the AMD B840 chipset. Designed for compact yet powerful PC builds, it provides an 8+2+2 phase VRM layout, four DDR5 memory slots supporting up to 256 GB at high frequencies,... Read More
Stock 1 Code 1253546 Brand GIGABYTE Model B840M DS3H WF6 Warranty 3 Years

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Estimated delivery Friday, October 2
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The GIGABYTE B840M DS3H WIFI6 micro ATX motherboard supports AMD Ryzen 9000 series processors using Socket AM5 and is built on the AMD B840 chipset. Designed for compact yet powerful PC builds, it provides an 8+2+2 phase VRM layout, four DDR5 memory slots supporting up to 256 GB at high frequencies, dual PCIe 4.0 M.2 slots for fast NVMe storage, integrated Wi‑Fi 6 and 2.5 GbE LAN for reliable network connectivity.

Advantages

This motherboard combines a robust VRM design with DDR5 memory support to deliver stable power and high memory bandwidth for gaming and productivity. The dual PCIe 4.0 M.2 slots enable high-speed storage configurations, while the built‑in Wi‑Fi 6 and 2.5GbE LAN provide flexible, fast networking options. The Micro ATX form factor balances compact size with expandability, offering multiple slots and ports suitable for a range of system builds.

Suitable for

  • Gaming systems using AMD Ryzen 9000 CPUs
  • Compact productivity and content-creation PCs
  • Home or small-office setups requiring fast wired and wireless networking
  • High-speed NVMe storage configurations (dual PCIe 4.0 M.2)

Key specifications

  • Form factor: Micro ATX
  • Chipset: AMD B840
  • Socket: AM5 (supports AMD Ryzen 9000 series)
  • Power design: 8+2+2 phase VRM
  • Memory: 4 × DDR5 slots, up to 256 GB, up to 8200 MHz (depending on CPU and kit)
  • Storage: Dual PCIe 4.0 M.2 slots
  • Expansion: 1 × PCIe x16 slot
  • Networking: Integrated Wi‑Fi 6 and 2.5GbE LAN
  • Weight: 1.13 kg

How to use

Install the motherboard into a compatible Micro ATX case, mount an AM5-compatible Ryzen 9000 CPU and attach an appropriate CPU cooler. Populate DDR5 memory modules across the four DIMM slots following the motherboard manual for optimal channel configuration. Connect NVMe SSDs to the PCIe 4.0 M.2 slots for high-speed storage, and install a graphics card in the PCIe x16 slot if required. Connect power supply cables, front-panel connectors, and network antennas for Wi‑Fi 6. Complete setup by installing an operating system and chipset drivers from GIGABYTE.

Recommendations

For best performance and stability, use a high-quality power supply and a compatible AM5 CPU cooler. Populate memory in matched DDR5 kits and consult the motherboard QVL for validated memory modules. Ensure BIOS is updated to the latest version for full Ryzen 9000 compatibility and optimal memory support.
Key Highlights
  • X3D Turbo Mode to unleash new era gaming performance
  • AMD Socket AM5: Supports AMD Ryzen 9000 / 8000 / 7000 Series Processors
  • Digital 8+2+2 phases VRM solution
  • Dual Channel DDR5: 4*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
  • WIFI EZ-Plug: Quick and easy design for Wi-Fi antenna installation
  • Fast Networking: 2.5GbE LAN & Wi-Fi 6 802.11ax
  • AMD Socket AM5 AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
  • PC micro ATX AMD B840 Realtek ALC897 7.1 channels
  • DDR5-SDRAM 4 DIMM Maximum internal memory: 256 GB
  • HDD & SSD M.2, PCI Express 4.0, SATA III RAID support Number of storage drives supported: 6
  • BIOS type: UEFI AMI 256 Mbit ACPI version: 5.0 Clear CMOS jumper
  • 2.5 Gigabit Ethernet Wi-Fi Wi-Fi 6 (802.11ax) Bluetooth 5.3
Specifications
1st M.2 highest PCI Express generation
4.0
1st M.2 largest key size
2580
2nd M.2 highest PCI Express generation
4.0
2nd M.2 largest key size
25110
ACPI version
5.0
Antenna included
Yes
ATX Power connector (24-pin)
Yes
Audio chip
Realtek ALC897
Audio output channels
7.1 channels
Batteries included
Yes
Battery technology
Lithium-Manganese Dioxide (LiMnO2)
Battery type
CR2032
Battery weight
3 g
BIOS memory size
256 Mbit
BIOS type
UEFI AMI
Bluetooth
Yes
Bluetooth version
5.3
Bundled software
Norton® Internet Security (OEM version)
Clear CMOS jumper
Yes
Compatible processor series
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Component for
PC
Cooling type
Passive
Country of origin
China
CPU fan connector
Yes
Depth
244 mm
Desktop Management Interface (DMI) version
2.7
DirectX version
12.0
DisplayPort version
1.4
DisplayPorts quantity
2
DVI-D ports quantity
0
ECC сompatibility
Non-ECC
EPS power connector (8-pin)
Yes
Ethernet interface type
2.5 Gigabit Ethernet
Ethernet LAN
Yes
Ethernet LAN (RJ-45) ports
1
Front panel audio connector
Yes
Front panel connector
Yes
HDCP
Yes
HDMI ports quantity
1
HDMI version
2.1
Headphone outputs
1
Height
35 mm
LAN controller
Realtek RTL8125
Line-in
Yes
Lithium weight per battery
0.07 g
Maximum internal memory
256 GB
Maximum internal memory per slot
64 GB
Maximum resolution
4096 x 2160 pixels
Memory channels
Dual-channel
Memory slots type
DIMM
Microphone in
Yes
Motherboard chipset
AMD B840
Motherboard chipset family
AMD
Motherboard form factor
micro ATX
Number of battery cells
1
Number of chassis fan connectors
2
Number of CPU fan connectors
2
Number of EPS power connectors (8-pin)
1
Number of HDDs supported
4
Number of M.2 (M) slots
2
Number of memory slots
4
Number of RGB LED pin headers
3
Number of SATA III connectors
4
Number of storage drives supported
6
Number of water pump connectors
2
Package depth
268 mm
Package height
68 mm
Package weight
1.23 kg
Package width
270 mm
Parallel processing technology support
Not supported
PC health monitoring
Fan, Temperature, Voltage, Water cooling
PCI Express x16 (Gen 3.x) slots
1
PCI Express x16 (Gen 4.x) slots
1
Power source type
ATX
Processor manufacturer
AMD
Processor socket
Socket AM5
Product colour
Dark brown
Products per shipping (inner) case
1 pc(s)
PS/2 ports quantity
1
RAID levels
0, 1, 5, 10
RAID support
Yes
RGB LED pin header
Yes
Screws included
Yes
Supported memory clock speed (max)
8200 MHz
Supported memory clock speeds
8200,8000,7950,7900,7800,7600,7400,7200,7000,6800,6666,6600,6400,6200,6000,5600,5200,4800,4400 MHz
Supported memory types
DDR5-SDRAM
Supported processor sockets
Socket AM5
Supported storage drive interfaces
M.2, PCI Express 4.0, SATA III
Supported storage drive types
HDD & SSD
System Management BIOS (SMBIOS) version
2.7
Top Wi-Fi standard
Wi-Fi 6 (802.11ax)
TPM connector
Yes
Unbuffered memory
Yes
USB 2.0 connectors
2
USB 2.0 ports quantity
4
USB 3.2 Gen 1 (3.1 Gen 1) connectors
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
1
USB 3.2 Gen 2 (3.1 Gen 2) connectors
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
0
VGA (D-Sub) ports quantity
0
Warranty period
3 year(s)
Weight
1.13 kg
Wi-Fi
Yes
Wi-Fi standards
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Width
244 mm
WiFi-AP antenna jack
2
Windows operating systems supported
Windows 10 x64, Windows 11 x64
WLAN controller model
Realtek RTL8851BE

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Price history over the last 6 months
Motherboard GIGABYTE B840M DS3H WIFI6, AMD B550, Socket AM5, Micro ATX
Current
R2,819
Lowest
R2,635
Highest
R2,942
Change 24H
+R180   +7%
Week
+R184   +7%
Month
+R85   +3%

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