Gigabyte B840M D2H
Gigabyte B840M D2H Specifications Review
Gigabyte B840M D2H by Gigabyte is a Micro-ATX form factor motherboard based on the mid-range AMD B840 chipset and AM5 socket, providing a balanced set of features and connectivity. It is designed to support DDR5 memory, with 2 slots, a maximum capacity of 128 GB, and an overclocking speed of up to 7600 MHz.
VRM Quality
The Gigabyte B840M D2H has a basic VRM configuration, delivering 60 A across 5 phases. Best for low-power CPUs (≤65 W TDP). Using high-wattage chips or overclocking could cause severe thermal issues and instability. Recommended for budget builds, office workstations, and media PCs.
See the VRM Appropriate CPU Specification Table at the bottom of this page for recommended CPU options.
Expansion and Storage Overview
The Gigabyte B840M D2H offers a simplified expansion and storage configuration with PCIe 4.0 support, meaning it uses PCI Express 4.0, fast enough for modern GPUs and high-speed NVMe SSDs. It also includes 2 x16 slots . These PCIe slots are used to connect expansion cards — with the x16 slots typically reserved for graphics cards, while x8, x4, and x1 slots are used for devices like capture cards, sound cards, or network adapters.
For storage, this motherboard provides 2 M.2 slots and 4 SATA ports. M.2 slots are high-speed connectors for modern NVMe SSDs, which are much faster than older storage, while SATA ports are used for traditional hard drives and 2.5-inch SSDs. Together, they allow you to mix fast primary storage with larger, more affordable drives for bulk data.
Connectivity Overview
This motherboard has essential connectivity features with wired Realtek® 2.5GbE LAN chip (2.5 Gbps/1 Gbps/100 Mbps) Ethernet . USB connectivity covers basic needs. Please refer to the specification table for details.
For video output, this motherboard includes HDMI version 2.1 . These video outputs are intended for integrated graphics and will only function if your CPU includes integrated GPU capabilities.
Audio Quality
The motherboard includes a standard audio chipset (Realtek® ALC892/ALC897) that covers basic needs for casual listening. While adequate for everyday use with mainstream headphones or desktop speakers, discerning users may want to add a USB DAC or sound card for improved fidelity, especially for music production or high-end headphones.
Overall Quality and Value
Gigabyte B840M D2H is basic and functional, carrying an overall quality score of 42.20. It is designed for budget-conscious builds or office setups where advanced features are not required, handling standard tasks effectively but lacking the polish or expandability of higher-tier models.
This motherboard has a solid 48.2% value efficiency, providing decent performance relative to its price. It represents a balanced option for users seeking fair capabilities without paying a premium.
General Information
| Manufacturer | Gigabyte |
|---|---|
| Motherboard Name | Gigabyte B840M D2H |
| Current Price Amazon | $166 |
| Amazon Price Updated | 1 day, 22 hours ago. |
| Motherboard Available | True |
| Chipset / Socket | AMD B840 / AM5 |
| Form Factor | Micro-ATX |
VRM Configuration
| CPU Power Phases (Amps) | 5 (60 A) |
|---|---|
| Power Design | 5+2+2 |
Memory Information
| Type / Slots | DDR5 / 2 slots |
|---|---|
| Max Capacity / Max OC | 128 GB / 7600 MHz |
PCIe Slot Configuration
| Supported Version | PCIe 4.0 | ||||
|---|---|---|---|---|---|
| Slot Size | Physical Slots | Gen4 | Gen3 |
|---|---|---|---|
| x16 | 2 | 1 | 1 |
Storage Configuration
| M.2 Slot Count | 2 slots |
|---|---|
| M.2 Supported Lengths | 2580, 2280 |
| SATA Ports | 4 |
Onboard Audio Features
| Audio Chipset | Realtek® ALC892/ALC897 |
|---|---|
| Analog Audio Jacks | 3 jacks |
Motherboard Display Outputs
| HDMI Output | HDMI - Version 2.1 (Max: 4096x2160@60 Hz) |
|---|
USB and Thunderbolt Connectivity
Rear USB Ports
| USB 2.0 Type-A (480 Mbps) | 4 |
|---|---|
| USB 3.2 Gen 1 Type-A (5 Gbps) | 2 |
Internal USB Headers
| USB 2.0 Header (480 Mbps) | 4 |
|---|---|
| USB 3.2 Gen 1 Header (5 Gbps) | 2 |
Networking Information
| Ethernet | Chipset: Realtek® 2.5GbE LAN chip (2.5 Gbps/1 Gbps/100 Mbps) LAN Ports: 1 |
|---|---|
| Wi-Fi |
Module: Not Included |
| Bluetooth | Supported: No |
Button Features
| Buttons |
Q-Flash Plus |
|---|
Quality & Features
Additional Information
| CPU Support | AMD Socket AM5, support for: AMD Ryzen™ 9000 Series Processors/ AMD Ryzen™ 8000 Series Processors/ AMD Ryzen™ 7000 Series Processors (Go to GIGABYTE's website for the latest CPU support list.) |
|---|---|
| OS Support | Support for Windows 11 64-bitSupport for Windows 10 64-bit |
| RAM | Supports non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules. Also supports AMD EXtended Profiles for Overclocking (AMD EXPO™). The CPU and memory configuration may affect the supported memory types, data rate (speed), and number of DRAM modules; refer to the manufacturer's website for the Memory Support List. |
| Display | Integrated Graphics Processor with AMD Radeon™ Graphics support. The HDMI port supports HDCP 2.3, HDR, and native HDMI 2.1 TMDS compatible ports. Graphics specifications may vary depending on CPU support. |
| Expansion | The primary PCIEX16 slot's operating mode is CPU-dependent: AMD Ryzen 9000/7000 Series support PCIe 4.0 x16 mode; AMD Ryzen 8000 Series-Phoenix 1 Processors support PCIe 4.0 x8 mode; AMD Ryzen 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4 mode. The second physical x16 slot (PCIEX4) is connected to the chipset and runs at PCIe 3.0 x4 speed. |
| Storage |
M.2 Slot Details:
RAID 5 for NVMe SSDs is only available on AMD Ryzen 9000 Series Processors. |
| Audio | High Definition Audio. Supports 2/4/5.1/7.1-channel configurations. The functionality of an audio jack can be changed using the audio software; 7.1-channel audio requires configuration via the audio software. |
| Buttons | The board includes a reset jumper and a Clear CMOS jumper. |
| Dimensions | Micro ATX Form Factor; 24.4cm x 24.4cm |
Note: The specifications and descriptions above are extracted by AI to present the official manufacturer data in a clearer and more natural way for easier understanding. However, this AI-processed information may contain inaccuracies. Please verify all details by consulting the official manufacturer's information provided below.
Gigabyte B840M D2H Compared to Motherboards with Similar Performance and Features
Motherboard Quality & Features per Price Table
| Motherboard (Desc) | Price (Desc) | Overall_Q (Desc) | VRM_Q (Desc) | Chipset (Desc) | Exp_Str (Desc) | Connect (Desc) | Audio (Desc) | Q&F/Price (Desc) |
|---|---|---|---|---|---|---|---|---|
|
$171
|
↑
0.0%
|
45.6%
|
14.0%
|
69.0%
|
55.0%
|
45.0%
|
45.0%
|
50.7%
|
|
|
$170
|
0.0%
|
44.4%
|
24.0%
|
68.0%
|
34.0%
|
56.0%
|
40.0%
|
49.6%
|
|
|
$130
|
0.0%
|
43.6%
|
22.0%
|
71.0%
|
51.0%
|
34.0%
|
40.0%
|
63.7%
|
|
|
$120
|
0.0%
|
42.6%
|
14.0%
|
74.0%
|
51.0%
|
34.0%
|
40.0%
|
67.5%
|
|
|
$166
|
↑
4.4%
|
42.2%
|
14.0%
|
65.0%
|
55.0%
|
32.0%
|
45.0%
|
48.2%
|
|
|
$139❗
|
↓
-2.2%
|
40.4%
|
20.0%
|
71.0%
|
37.0%
|
34.0%
|
40.0%
|
55.2%
|
|
|
$240❗
|
0.0%
|
40.2%
|
24.0%
|
40.0%
|
45.0%
|
44.0%
|
48.0%
|
31.8%
|
|
|
$0
|
0.0%
|
38.4%
|
16.0%
|
42.0%
|
54.0%
|
35.0%
|
45.0%
|
N/A | |
|
$236❗
|
↓
-39.3%
|
36.6%
|
24.0%
|
34.0%
|
34.0%
|
51.0%
|
40.0%
|
29.5%
|
Motherboard Comparison and Detail Specifications Table
| Specification |
No image available |
Perf Chart | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Price |
$171
|
↑
0.0%
|
$170
|
0.0%
|
$130
|
0.0%
|
$120
|
0.0%
|
$166
|
↑
4.4%
|
$139❗
|
↓
-2.2%
|
$240❗
|
0.0%
|
$0
|
0.0%
|
$236❗
|
↓
-39.3%
|
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| Manufacturer | GIGABYTE | ASRock | MSI | GIGABYTE | Gigabyte | MSI | parts-quick | ASUS | CJWDPDSWEZ | ||||||||||||||||||||||||||||||||||||||||||
| Chip/Socket | AMD B840 / AM5 | B650I / AM5 | AMD B840 / AM5 | B650M / AM5 | AMD B840 / AM5 | B650M / AM5 | A620M / AM5 | A620M / AM5 | A620I / AM5 | ||||||||||||||||||||||||||||||||||||||||||
| Form | Micro-ATX | Mini-ITX | Micro-ATX | Micro-ATX | Micro-ATX | Micro-ATX | Micro-ATX | Micro-ATX | Mini-ITX | ||||||||||||||||||||||||||||||||||||||||||
| CPU Phases | 5 (60 A) | 8 (60 A) | 7 (60 A) | 5 (60 A) | 5 (60 A) | 7 (55 A) | 8 (60 A) | 6 (50 A) | 8 (60 A) | ||||||||||||||||||||||||||||||||||||||||||
| PWR Design | 5 + 2 + 1 | 8+2+1 | 7 + 2 +1 | 5+2+2 | 5+2+2 | 7+2+1 | 8+2+1 | 6+1+1 | 8+2+1 | ||||||||||||||||||||||||||||||||||||||||||
| Mem Slots | 2 / DDR5 | 2 / DDR5 | 2 / DDR5 | 4 / DDR5 | 2 / DDR5 | 2 / DDR5 | 4 / DDR5 | 4 / DDR5 | 2 / DDR5 | ||||||||||||||||||||||||||||||||||||||||||
| Max Mem | 128 GB / 7600 MHz | 128 GB / 7200 MHz | 128 GB / 8000 MHz | 256 GB / 8000 MHz | 128 GB / 7600 MHz | 128 GB / 6800 MHz | 256 GB / 8000 MHz | 192 GB / 7600 MHz | 128 GB / 7200 MHz | ||||||||||||||||||||||||||||||||||||||||||
| PCIe | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | ||||||||||||||||||||||||||||||||||||||||||
| PCIe Slots | 1x16 Gen4 | 1x16 Gen3 | 1x16 Gen4 | 1x16 Gen4 | 1x1 Gen3 | 1x16 Gen4 | 1x1 Gen3 | 1x16 Gen4 | 1x16 Gen3 | 1x16 Gen4 | 1x1 Gen3 | 1x16 Gen4 | 1x1 Gen3 | 1x16 Gen4 | 2x1 Gen3 | 1x16 Gen4 | ||||||||||||||||||||||||||||||||||||||||||
| M.2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | ||||||||||||||||||||||||||||||||||||||||||
| SATA | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | ||||||||||||||||||||||||||||||||||||||||||
| Audio | Realtek® ALC892/ALC897 | Realtek ALC897 | Realtek ALC897 | Realtek® Audio CODEC | Realtek® ALC892/ALC897 | Realtek® ALC897 Codec | Realtek® ALC892/ALC897 | Realtek® ALC892/ALC897 | Realtek ALC897 Audio Codec | ||||||||||||||||||||||||||||||||||||||||||
| S/PDIF | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ✔️ | ❌ | ❌ | ||||||||||||||||||||||||||||||||||||||||||
| HDMI | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ||||||||||||||||||||||||||||||||||||||||||
| DP | ✔️ (1.4) | ❌ | ❌ | ✔️ (1.4) | ❌ | ✔️ (1.4) | ✔️ (1.4) | ✔️ (1.4) | ❌ | ||||||||||||||||||||||||||||||||||||||||||
| LAN | Realtek® 2.5GbE LAN chip… (1 ports) | 2.5 Gigabit LAN 10/100/1… (1 ports) | Realtek ® 8125D 2.5G LAN (1 ports) | Realtek® 2.5GbE LAN chip… (1 ports) | Realtek® 2.5GbE LAN chip… (1 ports) | Realtek® 8125BG 2.5G (1 ports) | Realtek® GbE LAN chip (1… (1 ports) | 1 x Realtek 1Gb Ethernet (2 ports) | 2.5 Gigabit LAN 10/100/1… (1 ports) | ||||||||||||||||||||||||||||||||||||||||||
| Wi-Fi | Wi-Fi Wi-Fi 6 | Wi-Fi Wi-Fi 6E | ❌ | ❌ | ❌ | ❌ | Wi-Fi Wi-Fi 6E | ❌ | Wi-Fi Wi-Fi 6E | ||||||||||||||||||||||||||||||||||||||||||
| BT | v5.3 | v5.2 | ❌ | ❌ | ❌ | ❌ | v5.2 | ❌ | v5.2 | Rear USB |
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| Front USB |
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VRM Appropriate CPU Specification Table
| CPU | Price | App_Performance | Game_Performance | TDP/Max | C/SC/T | L2/L3 Cache | Base/Boost | Code Name | GPU |
|---|---|---|---|---|---|---|---|---|---|
| No compatible CPU available. The motherboard's VRM is too weak to be recommended with any CPU in the database. | |||||||||
Official Manufacturer Data
Memory:
2 x DDR5 DIMM sockets supporting up to 128 GB (64 GB single DIMM capacity) of system memory
Dual channel memory architecture
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for AMD EXtended Profiles for Overclocking (AMD EXPO™) and Extreme Memory Profile (XMP) memory modules
(The CPU and memory configuration may affect the supported memory types, data rate (speed), and number of DRAM modules, please refer to "Memory Support List" on GIGABYTE's website for more information.)
Graphics:
- 1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz
* Support for HDMI 2.1 version, HDCP 2.3, and HDR.
** Support for native HDMI 2.1 TMDS compatible ports.
(Graphics specifications may vary depending on CPU support.)
Storage:
AMD Ryzen™ 9000/7000 Series Processors support PCIe 4.0 x4/x2 SSDs
AMD Ryzen™ 8000 Series-Phoenix 1 Processors support PCIe 4.0 x4/x2 SSDs
AMD Ryzen™ 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4/x2 SSDs
1 x M.2 connector (M2C_SB), integrated in the Chipset, supporting Socket 3, M key, type 2280 PCIe 3.0 x2 SSDs
4 x SATA 6Gb/s connectors
RAID 0, RAID 1, RAID 5, and RAID 10 support for NVMe SSD storage devices
* RAID 5 is only available on AMD Ryzen™ 9000 Series Processors.
RAID 0, RAID 1, and RAID 10 support for SATA storage devices
Expansion Slots:
AMD Ryzen™ 9000/7000 Series Processors support PCIe 4.0 x16 mode
AMD Ryzen™ 8000 Series-Phoenix 1 Processors support PCIe 4.0 x8 mode
AMD Ryzen™ 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4 mode
* The PCIEX16 slot can only support a graphics card or an NVMe SSD. If only one graphics card is to be installed, be sure to install it in the PCIEX16 slot.
Chipset:
- 1 x PCI Express x16 slot, supporting PCIe 3.0 and running at x4 (PCIEX4)
USB:
- 2 x USB 3.2 Gen 1 ports on the back panel
CPU+USB 2.0 Hub:
- 4 x USB 2.0/1.1 ports on the back panel
Chipset:
- 2 x USB 3.2 Gen 1 ports available through the internal USB header
- 4 x USB 2.0/1.1 ports available through the internal USB headers
Internal I/O:
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x CPU fan/water cooling pump header
1 x system fan header
2 x addressable RGB Gen2 LED strip headers
1 x RGB LED strip header
4 x SATA 6Gb/s connectors
2 x M.2 Socket 3 connectors
1 x front panel header
1 x front panel audio header
1 x USB 3.2 Gen 1 header
2 x USB 2.0/1.1 headers
1 x Trusted Platform Module header (For the GC-TPM2.0 SPI/GC-TPM2.0 SPI 2.0/GC-TPM2.0 SPI V2 module only)
1 x reset jumper
1 x Clear CMOS jumper
Back Panel I/O:
2 x USB 3.2 Gen 1 ports
4 x USB 2.0/1.1 ports
1 x HDMI port*
1 x Q-Flash Plus button
1 x RJ-45 port
3 x audio jacks
* Actual support may vary by CPU.
Audio:
High Definition Audio
2/4/5.1/7.1-channel
* You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings.
Special Features:
* Available applications in GCC may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications.
Support for Q-Flash
Support for Q-Flash Plus
Support for Smart Backup
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