OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

GIGABYTE B840M D2H Review | 107 Data compared

double-arrow
  • Avg. price: ~£95
  • CPU socket: AM5
  • Chipset: AMD B840
  • Form factor: microATX

GIGABYTE B840M D2H review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

5.7

Overall score

What it is: An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best motherboards on the market.

Score components:

90.0%

5.8

Technical Score

10.0%

5.2

User score

Good
5.8

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

5.9

Memory

16.0%

8.4

Platform & Features

16.0%

6.3

Storage

15.0%

7.3

Network

13.0%

1.6

Ports & USB

8.0%

3.2

Expansion

8.0%

5.2

Power & Cooling

5.0%

7.1

Audio

Good
5.2

User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

6.8

User reviews

30.0%

1.3

Popularity

User score:
United Kingdom
amazon
3.4
(3)
United States
Amazon_logo.png
3.4
(3)

(Reviews last updated: May 2026)

Good
  • 5.7
    Gaming

    Score components:

    28.0%

    5.3

    VRM phases

    22.0%

    5.5

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    6.1

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
  • gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h
gigabyte-b840m-d2h

Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Gigabyte B840M D2H is a budget-friendly Micro-ATX motherboard built on the AMD B840 chipset, featuring an AM5 socket that supports AMD Ryzen 7000, 8000, and 9000 series processors. Key specifications include a digital 5+2+2 phase VRM for stable power delivery, two DDR5 DIMM slots supporting up to 128GB of memory at overclocked speeds up to 7600 MT/s, and dual M.2 slots (one PCIe 4.0 and one PCIe 3.0). For connectivity, it offers 2.5GbE LAN, an HDMI 2.1 port for 4K video, and USB 3.2 Gen 1 ports. Main pros include its 'EZ-Latch' quick-release design for PCIe slots, Q-Flash Plus for easy BIOS updates without a CPU, and the performance-boosting X3D Turbo Mode. Notable cons include the lack of PCIe 5.0 support for graphics or storage, no built-in Wi-Fi, and the limited expansion capability of having only two RAM slots.

Technical Specifications of GIGABYTE B840M D2H

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

5.9

Memory

16.0%

8.4

Platform & Features

16.0%

6.3

Storage

15.0%

7.3

Network

13.0%

1.6

Ports & USB

8.0%

3.2

Expansion

8.0%

5.2

Power & Cooling

5.0%

7.1

Audio

5.8
GIGABYTE B840M D2H has a technical score of 5.8 points, which is lower than that of 61.8% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

6.8

User reviews

30.0%

1.3

Popularity

User score:
United Kingdom
amazon
3.4
(3)
United States
Amazon_logo.png
3.4
(3)

(Reviews last updated: May 2026)

5.2
GIGABYTE B840M D2H has a user score of 5.16 points, which is lower than that of 98.2% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the motherboard.
When it matters: When you prefer a motherboard that has already been bought and reviewed by many other users.
1.3
GIGABYTE B840M D2H has a popularity of 1.3 points, which is lower than 75.3% of products in this category.
Ratio quality/price

What it is: An indicator that combines the motherboard's overall rating with its cost.

When it matters: When you are looking for a motherboard that offers a strong balance of features, performance, and price.

Score components:

60.0%

5.7

Overall score

40.0%

10

Price

7.0
GIGABYTE B840M D2H has a quality-to-price ratio of 7 points, which is lower than 62.2% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: MEDIUM

Gigabyte
CPU socket
What it is: The socket type the motherboard is built to support.
When it matters: When you need the motherboard to match a specific CPU.

Importance: HIGH

AM5
GIGABYTE B840M D2H uses the AM5 CPU socket, which is more advanced than that of 85.8% of motherboards and equal to that of 14.2% of motherboards.
CPU platform

Importance: MEDIUM

AMD
Chipset
What it is: The chipset that defines the motherboard platform and many of its features.
When it matters: When you compare platform features, connectivity, and CPU support.

Importance: HIGH

AMD B840
GIGABYTE B840M D2H uses the AMD B840 chipset, which is more advanced than that of 83.7% of motherboards and equal to that of 0.5% of motherboards.
Form factor
What it is: The physical size standard of the motherboard, such as ATX or Micro-ATX.
When it matters: When you need the board to fit a specific case size.

Importance: HIGH

microATX
GIGABYTE B840M D2H has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
Show more
DDR memory version
What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
When it matters: When you need the board to match a certain memory platform.

Importance: HIGH

Good value: DDR5

DDR5
GIGABYTE B840M D2H uses DDR5 memory, which is newer than that of 64.7% of motherboards and equal to that of 35.3% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: HIGH

Good value: >=4

2
GIGABYTE B840M D2H has 2 Memory slots, which is fewer than 78.6% of motherboards and equal to 21.4% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

128 GB
GIGABYTE B840M D2H supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 32.1% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: MEDIUM

2
GIGABYTE B840M D2H supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.5% of motherboards.
Maximum RAM speed
What it is: The highest officially supported memory speed for the motherboard.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=6400 MT/s

5,200 MT/s
GIGABYTE B840M D2H supports memory speeds up to 5200 MT/s, which is higher than that of 60.8% of motherboards and equal to that of 1.7% of motherboards.
Show more
N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

2
GIGABYTE B840M D2H has 2 M.2 sockets, which is more than 30.8% of motherboards and equal to 34.6% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: HIGH

1x PCIe 4.0 x4, 1x PCIe 3.0 x2
GIGABYTE B840M D2H offers 1x PCIe 4.0x4, 1x PCIe 3.0x2 for M.2 slot interfaces, which is faster than that of 64.9% of motherboards and equal to that of 0.1% of motherboards.
N. of SATA 3 connectors
What it is: The number of SATA 6Gb/s connectors on the motherboard.
When it matters: When you plan to connect multiple SATA drives.

Importance: MEDIUM

Good value: >=6

4
GIGABYTE B840M D2H has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.3% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: MEDIUM

0/1/5/10
GIGABYTE B840M D2H supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
RAID 5 requires Ryzen 9000 series CPU
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: LOW

yes
GIGABYTE B840M D2H supports NVMe RAID. 40.3% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: HIGH

Good value: >=1

0
GIGABYTE B840M D2H has 0 PCIe 5.0x16 slots, which is equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: HIGH

Good value: >=1

1
GIGABYTE B840M D2H has 1 PCIe 4.0x16 slots, which is more than 55.6% of motherboards and equal to 35.3% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: MEDIUM

0
GIGABYTE B840M D2H has 0 PCIe 3.0x16 slots, which is fewer than 59.5% of motherboards and equal to 40.5% of motherboards.
runs at x4 mode
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

x16/x0/x4
GIGABYTE B840M D2H uses x16/x0/x4 for PCIe slot electrical configuration, which is more flexible than that of 50.3% of motherboards and equal to that of 4.3% of motherboards.
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: MEDIUM

no
GIGABYTE B840M D2H does not support PCIe bifurcation. 61% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
What it is: The total number of rear USB ports available on the motherboard.
When it matters: When you use many USB devices directly from the back of the PC.

Importance: MEDIUM

Good value: >=8

6
GIGABYTE B840M D2H has 6 USB ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 32.9% of motherboards.
Total USB ports (including headers)
What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
When it matters: When you want to know the board's full USB expansion potential.

Importance: MEDIUM

Good value: >=14

11
GIGABYTE B840M D2H has 11 USB ports (including headers), which is fewer than 89% of motherboards and equal to 3% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

0
GIGABYTE B840M D2H has 0 USB-C ports (rear I/O), which is fewer than 64.6% of motherboards and equal to 35.4% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: MEDIUM

Good value: >=2

0
GIGABYTE B840M D2H has 0 USB-C ports (including headers), which is fewer than 69.6% of motherboards and equal to 30.4% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: HIGH

Good value: >=1

0
GIGABYTE B840M D2H has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

2.5 Gbps
GIGABYTE B840M D2H supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.2% of motherboards and equal to that of 41.5% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

?
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: LOW

1
GIGABYTE B840M D2H has 1 RJ45 ports, which is equal to 85.6% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: MEDIUM

no
GIGABYTE B840M D2H does not support Wi-Fi connectivity. 49.1% of motherboards support this feature.
Wi-Fi version
What it is: The supported Wi-Fi generation, such as Wi-Fi 6 or Wi-Fi 7.
When it matters: When you care about wireless speed and router compatibility.

Importance: MEDIUM

Good value: Wi-Fi 6E (802.11ax)

N/A
Show more
Audio codec
What it is: The onboard audio codec used by the motherboard.
When it matters: When sound quality from the built-in audio matters to you.

Importance: MEDIUM

Realtek ALC897
GIGABYTE B840M D2H uses the Realtek ALC897 audio codec, which is less advanced than that of 50.8% of motherboards and equal to that of 29.3% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
GIGABYTE B840M D2H offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: MEDIUM

Good value: >=120 dB

?
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

no
GIGABYTE B840M D2H does not support a headphone amp. 63% of motherboards support this feature.
N. of 3.5mm audio jacks
What it is: The number of rear 3.5mm audio jacks on the motherboard.
When it matters: When you want more analog audio connection options.

Importance: LOW

Good value: >=5

3
GIGABYTE B840M D2H has 3 3.5mm audio jacks, which is fewer than 50.3% of motherboards and equal to 38.2% of motherboards.
Show more
VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: HIGH

Good value: >=12

5+2+2
GIGABYTE B840M D2H has 5+2+2 VRM phases, which is fewer than 71.2% of motherboards and equal to 0.7% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: HIGH

Good value: >=2

1
GIGABYTE B840M D2H has 1 CPU power connectors, which is equal to 54.5% of motherboards.
N. of fan headers
What it is: The number of headers available for case or CPU fans.
When it matters: When your build uses several fans.

Importance: MEDIUM

Good value: >=6

3
GIGABYTE B840M D2H has 3 fan headers, which is fewer than 76.7% of motherboards and equal to 15% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: MEDIUM

yes
GIGABYTE B840M D2H has a pump header. 23.1% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

2 A
GIGABYTE B840M D2H supports up to 2 A on the pump header, which is higher than that of 43.3% of motherboards and equal to that of 33.4% of motherboards.
Show more

GIGABYTE B840M D2H vs the average motherboard

  • Newer CPU socket
    GIGABYTE B840M D2H has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
    What it is: The socket type the motherboard is built to support.
    When it matters: When you need the motherboard to match a specific CPU.

    Importance: HIGH

    GIGABYTE B840M D2H has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.AM5 vs LGA 1151
  • Newer DDR memory generation
    GIGABYTE B840M D2H has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
    What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
    When it matters: When you need the board to match a certain memory platform.

    Importance: HIGH

    Good value: DDR5

    GIGABYTE B840M D2H has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.DDR5 vs DDR4
  • 1 more PCIe x4 slots
    GIGABYTE B840M D2H has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.
    What it is: The number of PCIe x4 slots on the motherboard.
    When it matters: When you need more mid-bandwidth expansion slots.

    Importance: MEDIUM

    GIGABYTE B840M D2H has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.1 vs 0
  • Includes dual BIOS
    GIGABYTE B840M D2H has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
    What it is: Shows whether the motherboard includes two BIOS chips for redundancy or recovery.
    When it matters: When BIOS safety and recovery matter to you.

    Importance: LOW

    GIGABYTE B840M D2H has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 1 more PCIe 4.0x16 slots
    GIGABYTE B840M D2H has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
    When it matters: When you want more room for modern expansion cards.

    Importance: HIGH

    Good value: >=1

    GIGABYTE B840M D2H has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.1 vs 0
  • More flexible PCIe lane configuration
    GIGABYTE B840M D2H has more flexible PCIe lane configuration than the average motherboard (x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
    What it is: The actual lane wiring used by the motherboard PCIe slots.
    When it matters: When you need to know how much bandwidth each slot really gets.

    Importance: HIGH

    GIGABYTE B840M D2H has more flexible PCIe lane configuration than the average motherboard (x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x0/x4 vs x16/x1
  • 61 mm shorter
    GIGABYTE B840M D2H is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    What it is: The physical height of the motherboard.
    When it matters: When you check case fit or compare board size.

    Importance: LOW

    GIGABYTE B840M D2H is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.244 mm vs 305 mm
  • 68.4% cheaper
    GIGABYTE B840M D2H is cheaper than the average motherboard (£95 vs £160).
    GIGABYTE B840M D2H is cheaper than the average motherboard (£95 vs £160).£95 vs £160
  • Newer CPU socket
    GIGABYTE B840M D2H has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Includes dual BIOS
    GIGABYTE B840M D2H has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 4 newer release date
    GIGABYTE B840M D2H has a newer release date than the average motherboard (2,025 vs 2,021). The average motherboard was released in 2,021.
  • Newer DDR memory generation
    GIGABYTE B840M D2H has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
  • 54.1% higher overclocked RAM speed
    GIGABYTE B840M D2H has a higher overclocked RAM speed than the average motherboard (7,600 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • 1 more PCIe x4 slots
    GIGABYTE B840M D2H has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.
  • 1 more PCIe 4.0x16 slots
    GIGABYTE B840M D2H has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • More flexible PCIe lane configuration
    GIGABYTE B840M D2H has more flexible PCIe lane configuration than the average motherboard (x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 2 more USB 2.0 ports
    GIGABYTE B840M D2H has more USB 2.0 ports than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • 61 mm shorter
    GIGABYTE B840M D2H is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.

Total
Overall
Platform & Features
Memory
Expansion
Ports & USB
Power & Cooling
  • Less versatile form factor
    GIGABYTE B840M D2H has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • More basic motherboard chipset
    GIGABYTE B840M D2H has more basic motherboard chipset than the average motherboard (AMD B840 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • 2 fewer memory slots
    GIGABYTE B840M D2H has fewer memory slots than the average motherboard (2 vs 4). The average motherboard has 4 memory slot/s.
  • Slower M.2 slot interfaces
    GIGABYTE B840M D2H has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
  • No PCIe bifurcation support
    GIGABYTE B840M D2H does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • No multi-GPU support
    GIGABYTE B840M D2H does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 1 fewer PCIe x1 slots
    GIGABYTE B840M D2H has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 fewer PCIe 3.0x16 slots
    GIGABYTE B840M D2H has fewer PCIe 3.0x16 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
    runs at x4 mode
  • 2 fewer rear USB ports
    GIGABYTE B840M D2H has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 4 fewer total USB connections
    GIGABYTE B840M D2H has fewer total USB connections than the average motherboard (11 vs 15). The average motherboard has 15 total USB connections.
  • 1 fewer rear USB-C ports
    GIGABYTE B840M D2H has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 1 fewer USB 3.2 Gen2 ports
    GIGABYTE B840M D2H has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 2 fewer USB 3.2 Gen1 ports
    GIGABYTE B840M D2H has fewer USB 3.2 Gen1 ports than the average motherboard (2 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 fewer total USB-C connections
    GIGABYTE B840M D2H has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
  • No Wi-Fi antenna included
    GIGABYTE B840M D2H does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No headphone amp support
    GIGABYTE B840M D2H does not support a headphone amp, while the average motherboard does. 63% of motherboards support a headphone amp.
  • More basic audio codec
    GIGABYTE B840M D2H has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 2 fewer 3.5mm audio jacks
    GIGABYTE B840M D2H has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • No optical S/PDIF out
    GIGABYTE B840M D2H does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • 2 fewer ARGB headers
    GIGABYTE B840M D2H has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • 2 fewer fan headers
    GIGABYTE B840M D2H has fewer fan headers than the average motherboard (3 vs 5). The average motherboard has 5 fan header/s.
  • No onboard RGB lighting
    GIGABYTE B840M D2H does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • Fewer VRM phases
    GIGABYTE B840M D2H has fewer VRM phases than the average motherboard (5+2+2 vs 10). The average motherboard has 10 VRM phase/s.
  • 2 fewer memory slots
    GIGABYTE B840M D2H has fewer memory slots than the average motherboard (2 vs 4). The average motherboard has 4 memory slot/s.
    What it is: The number of RAM slots on the motherboard.
    When it matters: When you want more room for future memory upgrades.

    Importance: HIGH

    Good value: >=4

    GIGABYTE B840M D2H has fewer memory slots than the average motherboard (2 vs 4). The average motherboard has 4 memory slot/s.2 vs 4
  • 2 fewer rear USB ports
    GIGABYTE B840M D2H has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    What it is: The total number of rear USB ports available on the motherboard.
    When it matters: When you use many USB devices directly from the back of the PC.

    Importance: MEDIUM

    Good value: >=8

    GIGABYTE B840M D2H has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • 4 fewer total USB connections
    GIGABYTE B840M D2H has fewer total USB connections than the average motherboard (11 vs 15). The average motherboard has 15 total USB connections.
    What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
    When it matters: When you want to know the board's full USB expansion potential.

    Importance: MEDIUM

    Good value: >=14

    GIGABYTE B840M D2H has fewer total USB connections than the average motherboard (11 vs 15). The average motherboard has 15 total USB connections.11 vs 15
  • No PCIe bifurcation support
    GIGABYTE B840M D2H does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
    What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
    When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

    Importance: MEDIUM

    GIGABYTE B840M D2H does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 1 fewer rear USB-C ports
    GIGABYTE B840M D2H has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
    What it is: The total number of rear USB-C ports on the motherboard.
    When it matters: When you want more USB-C devices connected without adapters.

    Importance: MEDIUM

    Good value: >=1

    GIGABYTE B840M D2H has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.0 vs 1
  • No Wi-Fi antenna included
    GIGABYTE B840M D2H does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
    What it is: Shows whether the external Wi-Fi antenna is included with the motherboard package.
    When it matters: When the board has Wi-Fi and you want it ready to use right away.

    Importance: LOW

    GIGABYTE B840M D2H does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • Slower M.2 slot interfaces
    GIGABYTE B840M D2H has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
    When it matters: When you want to check which drives each M.2 slot can use.

    Importance: HIGH

    GIGABYTE B840M D2H has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.1x PCIe 4.0x4, 1x PCIe 3.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 1 fewer USB 3.2 Gen2 ports
    GIGABYTE B840M D2H has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-A ports on the motherboard.
    When it matters: When you want faster USB-A ports for storage or accessories.

    Importance: MEDIUM

    Good value: >=2

    GIGABYTE B840M D2H has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.0 vs 1
Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

Graphic comparison of GIGABYTE B840M D2H and

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
3.4
3 Reviews
United States
Amazon_logo.png
3.4
3 Reviews

(Reviews last updated: May 2026)

What customers like about GIGABYTE B840M D2H?

  • Supports the latest AMD Ryzen 9000, 8000, and 7000 series processors on the AM5 socket
  • Includes a 2.5GbE LAN for faster networking compared to standard gigabit ethernet
  • Features a user-friendly 'EZ-Latch' design for easier PCIe card removal
  • Q-Flash Plus allows for BIOS updates without needing a CPU, RAM, or graphics card installed
  • Includes X3D Turbo Mode to help optimize gaming performance for Ryzen processors
  • Compact Micro ATX form factor is ideal for smaller PC builds

What customers dislike about GIGABYTE B840M D2H?

  • Lacks PCIe 5.0 support for both graphics cards and M.2 drives, limiting future-proofing for next-gen hardware
  • Only provides two DDR5 DIMM slots, which restricts maximum memory capacity and future upgrade paths compared to four-slot boards
  • Does not support Precision Boost Overdrive (PBO) for manual performance maximization, unlike the B850 chipset
  • Limited VRM setup (5+2+2 phases) may not be ideal for sustained heavy workloads on high-end Ryzen 9 processors
  • Limited expansion options due to fewer PCIe lanes and internal headers

Video reviews

Compare GIGABYTE B840M D2H with

VS
VS

Compare