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ASUS B840M Max Gaming AX Review | 107 Data compared

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  • Avg. price in UK: ~£130
  • Avg. price in US: ~$170
  • CPU socket: AM5
  • Chipset: AMD B840
  • Form factor: microATX

ASUS B840M Max Gaming AX review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

7.7

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%

7.7

Technical Score

10.0%

?

User score

Very good
7.7

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%

10

Memory

16.0%

9.0

Platform & Features

16.0%

7.6

Storage

15.0%

9.3

Network

13.0%

4.5

Ports & USB

8.0%

3.8

Expansion

8.0%

6.7

Power & Cooling

5.0%

7.2

Audio

Very good
?

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%

?

User reviews

30.0%

?

Popularity

  • 6.9
    Gaming

    Score components:

    28.0%

    6.0

    VRM phases

    22.0%

    7.8

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    9.4

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

  • No image
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Best prices in UK

    N/A~ £130

Best rankings

?

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

Verdict

The ASUS B840M MAX GAMING AX is a micro-ATX motherboard built on the AMD B840 chipset and Socket AM5, specifically engineered to support AMD Ryzen 9000, 8000, and 7000 series processors. Key specifications include an 8+2+1 phase digital power design, four DDR5 DIMM slots supporting up to 256GB of memory at overclocked speeds of 7600+ MT/s, and a versatile storage array featuring three M.2 slots (two PCIe 4.0 and one PCIe 3.0) alongside six SATA 6Gb/s ports. Its primary pros include high-speed networking with Realtek 2.5Gb Ethernet and Wi-Fi 6, advanced cooling via massive VRM heatsinks and Fan Xpert 2+ software, and a DIY-friendly pre-mounted I/O shield. However, notable cons include the lack of PCIe 5.0 support for both graphics and storage, the absence of USB4 or high-wattage USB-C charging, and limited expansion with only PCIe 3.0 x1 speeds on secondary full-length slots.

Technical Specifications of ASUS B840M Max Gaming AX

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%

?

Memory

16.0%

?

Platform & Features

16.0%

?

Storage

15.0%

?

Network

13.0%

?

Ports & USB

8.0%

?

Expansion

8.0%

?

Power & Cooling

5.0%

?

Audio

7.7
ASUS B840M Max Gaming AX has a technical score of 7.72 points, which is higher than that of 76.1% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
ASUS B840M Max Gaming AX has a popularity of 1 points, which is lower than 77.9% 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%

7.7

Overall score

40.0%

9.8

Price

8.4
ASUS B840M Max Gaming AX has a quality-to-price ratio of 8.4 points, which is higher than 82.3% 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

Asus
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
ASUS B840M Max Gaming AX 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
ASUS B840M Max Gaming AX 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
ASUS B840M Max Gaming AX 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.
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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
ASUS B840M Max Gaming AX 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

4
ASUS B840M Max Gaming AX has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% 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

256 GB
ASUS B840M Max Gaming AX supports up to 256 GB of memory, which is more than 82.8% of motherboards and equal to 16.5% 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
ASUS B840M Max Gaming AX 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

7,600 MT/s
ASUS B840M Max Gaming AX supports memory speeds up to 7600 MT/s, which is higher than that of 80.9% of motherboards and equal to that of 2.4% of motherboards.
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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

3
ASUS B840M Max Gaming AX has 3 M.2 sockets, which is more than 65.4% of motherboards and equal to 18.6% 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

2x PCIe 4.0 x4, 1x PCIe 3.0 x2
ASUS B840M Max Gaming AX offers 2x PCIe 4.0x4, 1x PCIe 3.0x2 for M.2 slot interfaces, which is faster than that of 73.5% of motherboards and equal to that of 0.2% 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

6
ASUS B840M Max Gaming AX has 6 SATA 3 connectors, which is more than 52.6% of motherboards and equal to 32.1% 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
ASUS B840M Max Gaming AX 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
ASUS B840M Max Gaming AX supports NVMe RAID. 40.3% of motherboards support this feature.
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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
ASUS B840M Max Gaming AX 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
ASUS B840M Max Gaming AX has 1 PCIe 4.0x16 slots, which is more than 55.6% of motherboards and equal to 35.3% of motherboards.
runs at x4 mode
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

3
ASUS B840M Max Gaming AX has 3 PCIe 3.0x16 slots, which is more than 82.8% of motherboards and equal to 11.1% of motherboards.
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/x1/x1/x1, x8/x4
ASUS B840M Max Gaming AX uses x16/x1/x1/x1, x8/x4 for PCIe slot electrical configuration, which is less flexible than that of 60.7% of motherboards.
Depends on CPU.
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

yes
ASUS B840M Max Gaming AX supports PCIe bifurcation. 39.1% of motherboards support this feature.
x8/x8.
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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

7
ASUS B840M Max Gaming AX has 7 USB ports (rear I/O), which is fewer than 59.8% of motherboards and equal to 4.4% 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

16
ASUS B840M Max Gaming AX has 16 USB ports (including headers), which is more than 61.8% of motherboards and equal to 10.2% 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

1
ASUS B840M Max Gaming AX has 1 USB-C ports (rear I/O), which is more than 35.4% of motherboards and equal to 48.8% 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

2
ASUS B840M Max Gaming AX has 2 USB-C ports (including headers), which is more than 51.8% of motherboards and equal to 32.8% 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
ASUS B840M Max Gaming AX has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
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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
ASUS B840M Max Gaming AX 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
ASUS B840M Max Gaming AX 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

yes
ASUS B840M Max Gaming AX supports Wi-Fi connectivity. 50.9% 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)

Wi-Fi 6 (802.11ax)
ASUS B840M Max Gaming AX supports Wi-Fi 6 (802.11ax), which is newer than that of 60.4% of motherboards and equal to that of 11.6% of motherboards.
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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 7.1 Surround Sound High Definition Audio CODEC
ASUS B840M Max Gaming AX uses the Realtek 7.1 Surround Sound High Definition Audio CODEC audio codec, which is less advanced than that of 99.1% of motherboards and equal to that of 0.8% 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
ASUS B840M Max Gaming AX 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

?
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
ASUS B840M Max Gaming AX 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

8+2+1
ASUS B840M Max Gaming AX has 8+2+1 VRM phases, which is fewer than 51.6% of motherboards and equal to 2.2% 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
ASUS B840M Max Gaming AX 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

6
ASUS B840M Max Gaming AX has 6 fan headers, which is more than 50.3% of motherboards and equal to 22.3% 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
ASUS B840M Max Gaming AX 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

1 A
ASUS B840M Max Gaming AX supports up to 1 A on the pump header, which is lower than that of 58.4% of motherboards and equal to that of 15.9% of motherboards.
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ASUS B840M Max Gaming AX vs the average motherboard

  • Newer CPU socket
    ASUS B840M Max Gaming AX 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

    ASUS B840M Max Gaming AX 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
  • 2x more maximum memory capacity
    ASUS B840M Max Gaming AX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    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

    ASUS B840M Max Gaming AX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.256 GB vs 128 GB
  • Newer DDR memory generation
    ASUS B840M Max Gaming AX 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

    ASUS B840M Max Gaming AX has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.DDR5 vs DDR4
  • 1 more M.2 sockets
    ASUS B840M Max Gaming AX has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
    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

    ASUS B840M Max Gaming AX has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.3 vs 2
  • Integrated I/O shield
    ASUS B840M Max Gaming AX has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
    What it is: Shows whether the rear I/O shield comes pre-mounted on the motherboard instead of being installed separately.
    When it matters: When you want an easier motherboard installation process.

    Importance: LOW

    ASUS B840M Max Gaming AX has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
  • Includes dual BIOS
    ASUS B840M Max Gaming AX 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

    ASUS B840M Max Gaming AX has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 1 more PCIe 4.0x16 slots
    ASUS B840M Max Gaming AX has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    runs at x4 mode
    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

    ASUS B840M Max Gaming AX 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
  • Supports Wi-Fi
    ASUS B840M Max Gaming AX supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support 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

    ASUS B840M Max Gaming AX supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • Newer CPU socket
    ASUS B840M Max Gaming AX has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Integrated I/O shield
    ASUS B840M Max Gaming AX has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
  • Includes dual BIOS
    ASUS B840M Max Gaming AX has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 4 years newer release date
    ASUS B840M Max Gaming AX has a newer release date than the average motherboard (2,025 vs 2,021). The average motherboard was released in 2,021.
  • 2x more maximum memory capacity
    ASUS B840M Max Gaming AX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • Newer DDR memory generation
    ASUS B840M Max Gaming AX has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
  • 65.2% higher maximum RAM speed
    ASUS B840M Max Gaming AX has a higher maximum RAM speed than the average motherboard (7,600 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • Supports ECC memory
    ASUS B840M Max Gaming AX supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
  • 54.1% higher overclocked RAM speed
    ASUS B840M Max Gaming AX 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 M.2 sockets
    ASUS B840M Max Gaming AX has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
  • 2 more SATA 3 connectors
    ASUS B840M Max Gaming AX has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
  • 1 more PCIe 4.0x16 slots
    ASUS B840M Max Gaming AX has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 2 more PCIe 3.0x16 slots
    ASUS B840M Max Gaming AX has more PCIe 3.0x16 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
  • 1 more USB 3.2 Gen1 USB-C ports
    ASUS B840M Max Gaming AX has more USB 3.2 Gen1 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen1 USB-C port/s.
  • 1 more USB 3.2 Gen2 ports
    ASUS B840M Max Gaming AX has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 more total USB-C connections
    ASUS B840M Max Gaming AX has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
  • 1 more total USB connections
    ASUS B840M Max Gaming AX has more total USB connections than the average motherboard (16 vs 15). The average motherboard has 15 total USB connections.
  • 2 more USB 2.0 ports
    ASUS B840M Max Gaming AX has more USB 2.0 ports than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • Supports Wi-Fi
    ASUS B840M Max Gaming AX supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • Supports Bluetooth
    ASUS B840M Max Gaming AX supports Bluetooth, while the average motherboard does not. 47% of motherboards support Bluetooth.
  • 1 more ARGB headers
    ASUS B840M Max Gaming AX has more ARGB headers than the average motherboard (3 vs 2). The average motherboard has 2 ARGB header/s.
  • 61 mm shorter
    ASUS B840M Max Gaming AX is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
  • 1 more fan headers
    ASUS B840M Max Gaming AX has more fan headers than the average motherboard (6 vs 5). The average motherboard has 5 fan header/s.

Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling
  • No automatic overclocking
    ASUS B840M Max Gaming AX does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
    memory auto-OC only
  • Less versatile form factor
    ASUS B840M Max Gaming AX has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • More basic motherboard chipset
    ASUS B840M Max Gaming AX has more basic motherboard chipset than the average motherboard (AMD B840 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • Slower M.2 slot interfaces
    ASUS B840M Max Gaming AX has slower M.2 slot interfaces than the average motherboard (2x 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 multi-GPU support
    ASUS B840M Max Gaming AX does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
    Single PCIe x16 slot only.
  • 1 fewer PCIe x1 slots
    ASUS B840M Max Gaming AX has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 4 fewer USB 3.2 Gen1 ports
    ASUS B840M Max Gaming AX has fewer USB 3.2 Gen1 ports than the average motherboard (0 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    rear USB-C is faster than Gen 1
  • 1 fewer rear USB ports
    ASUS B840M Max Gaming AX has fewer rear USB ports than the average motherboard (7 vs 8). The average motherboard has 8 rear USB port/s.
  • 1 fewer PS/2 ports
    ASUS B840M Max Gaming AX has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
  • More basic audio codec
    ASUS B840M Max Gaming AX has more basic audio codec than the average motherboard (Realtek 7.1 Surround Sound High Definition Audio CODEC vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 2 fewer 3.5mm audio jacks
    ASUS B840M Max Gaming AX 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
    ASUS B840M Max Gaming AX does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • 1 fewer RGB headers
    ASUS B840M Max Gaming AX has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 1 A lower pump header current limit
    ASUS B840M Max Gaming AX has a lower pump header current than the average motherboard (1 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic audio codec
    ASUS B840M Max Gaming AX has more basic audio codec than the average motherboard (Realtek 7.1 Surround Sound High Definition Audio CODEC vs Realtek ALC898). The average motherboard uses Realtek ALC898 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

    ASUS B840M Max Gaming AX has more basic audio codec than the average motherboard (Realtek 7.1 Surround Sound High Definition Audio CODEC vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.Realtek 7.1 Surround Sound High Definition Audio CODEC vs Realtek ALC898
  • 4 fewer USB 3.2 Gen1 ports
    ASUS B840M Max Gaming AX has fewer USB 3.2 Gen1 ports than the average motherboard (0 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    rear USB-C is faster than Gen 1
    What it is: The number of rear USB 3.2 Gen1 Type-A ports on the motherboard.
    When it matters: When you want more standard USB ports with faster transfer speeds.

    Importance: MEDIUM

    Good value: >=4

    ASUS B840M Max Gaming AX has fewer USB 3.2 Gen1 ports than the average motherboard (0 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.0 vs 4
  • No multi-GPU support
    ASUS B840M Max Gaming AX does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
    Single PCIe x16 slot only.
    What it is: Shows whether the board can run more than one graphics card in a supported multi-GPU configuration.
    When it matters: When you plan to run more than one graphics card.

    Importance: LOW

    ASUS B840M Max Gaming AX does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 1 fewer rear USB ports
    ASUS B840M Max Gaming AX has fewer rear USB ports than the average motherboard (7 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

    ASUS B840M Max Gaming AX has fewer rear USB ports than the average motherboard (7 vs 8). The average motherboard has 8 rear USB port/s.7 vs 8
  • Slower M.2 slot interfaces
    ASUS B840M Max Gaming AX has slower M.2 slot interfaces than the average motherboard (2x 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

    ASUS B840M Max Gaming AX has slower M.2 slot interfaces than the average motherboard (2x 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.2x PCIe 4.0x4, 1x PCIe 3.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 2 fewer 3.5mm audio jacks
    ASUS B840M Max Gaming AX has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 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

    ASUS B840M Max Gaming AX has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.3 vs 5
  • No automatic overclocking
    ASUS B840M Max Gaming AX does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
    memory auto-OC only
    What it is: Support for automatic CPU or memory overclocking features.
    When it matters: When you want easier performance tuning without manual tweaking.

    Importance: MEDIUM

    ASUS B840M Max Gaming AX does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
  • 4.17x less popular
    ASUS B840M Max Gaming AX is less popular than the average motherboard (1.00 vs 4.165).
    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.
    ASUS B840M Max Gaming AX is less popular than the average motherboard (1.00 vs 4.165).1 vs 4.17
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Third-party reviews

What customers like about ASUS B840M Max Gaming AX?

  • Stable 8+2+1 phase power design with discrete MOSFETs for efficient delivery
  • Triple M.2 slot configuration, with two slots supporting PCIe 4.0 (64 Gbps)
  • Strong memory overclocking support, reaching up to 7600+ MT/s (OC)
  • Modern wireless connectivity with built-in Wi-Fi 6 support and Bluetooth 5.3
  • Effective cooling features including VRM and M.2 heatsinks with Fan Xpert 2+ control
  • DIY-friendly additions like BIOS FlashBack and the M.2 Q-Latch for tool-free installation

What customers dislike about ASUS B840M Max Gaming AX?

  • Limited to PCIe 4.0 speeds, lacking the newer PCIe 5.0 support found on higher-tier chipsets
  • Restricted expansion options with only one PCIe x16 slot and no additional PCIe x1 slots
  • Maximum memory capacity is capped at 192GB, which is lower than some competing 256GB models
  • Rear I/O connectivity is somewhat basic, notably lacking a rear USB-C port in some configurations
  • Does not support Wi-Fi 6E or Wi-Fi 7, sticking to the standard Wi-Fi 6 version

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