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MSI B450 Gaming Pro Carbon AC Review | 107 Data compared

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  • Avg. price in UK: ~£150
  • Avg. price in US: ~$130
  • CPU socket: AM4
  • Chipset: AMD B450
  • Form factor: ATX

MSI B450 Gaming Pro Carbon AC review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

6.5

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%

6.1

Technical Score

10.0%

9.6

User score

Good
6.1

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%

6.8

Memory

16.0%

7.4

Platform & Features

16.0%

5.9

Storage

15.0%

6.8

Network

13.0%

3.2

Ports & USB

8.0%

3.2

Expansion

8.0%

7.3

Power & Cooling

5.0%

9.2

Audio

Good
9.6

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%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(762)

(Reviews last updated: May 2026)

Exceptional
  • 4.1
    Gaming

    Score components:

    28.0%

    4.5

    VRM phases

    22.0%

    5.5

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    3.6

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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

Verdict

The MSI B450 Gaming Pro Carbon AC is a premium ATX motherboard featuring the AMD B450 chipset and AM4 socket, supporting up to 64GB of dual-channel DDR4 memory overclocked to 3466 MHz. It distinguishes itself with high-end characteristics including an 8+4 pin power connector for enhanced VRM performance, integrated Intel 9260 802.11ac Wi-Fi, and the Realtek ALC1220 audio codec for superior sound. Main pros include its robust thermal design with extended heatsinks, dual M.2 slots (one with M.2 Shield), and convenient BIOS Flashback+ button for easy updates without a CPU. However, notable cons include the loss of two SATA ports when using the primary M.2 slot and a somewhat limited number of USB ports on the rear I/O compared to some competitors.

Technical Specifications of MSI B450 Gaming Pro Carbon AC

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%

6.8

Memory

16.0%

7.4

Platform & Features

16.0%

5.9

Storage

15.0%

6.8

Network

13.0%

3.2

Ports & USB

8.0%

3.2

Expansion

8.0%

7.3

Power & Cooling

5.0%

9.2

Audio

6.1
MSI B450 Gaming Pro Carbon AC has a technical score of 6.15 points, which is lower than that of 53.9% 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%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(762)

(Reviews last updated: May 2026)

9.6
MSI B450 Gaming Pro Carbon AC has a user score of 9.58 points, which is higher than that of 99.9% 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.
10
MSI B450 Gaming Pro Carbon AC has a popularity of 10 points, which is higher than 79.9% 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%

6.5

Overall score

40.0%

9.7

Price

7.5
MSI B450 Gaming Pro Carbon AC has a quality-to-price ratio of 7.5 points, which is higher than 54% 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

MSI
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

AM4
MSI B450 Gaming Pro Carbon AC uses the AM4 CPU socket, which is more advanced than that of 38.5% of motherboards and equal to that of 13.3% 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 B450
MSI B450 Gaming Pro Carbon AC uses the AMD B450 chipset, which is less advanced than that of 54.8% of motherboards and equal to that of 1.8% 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

ATX
MSI B450 Gaming Pro Carbon AC has the ATX form factor, which is more versatile than that of 47.8% of motherboards and equal to that of 52.2% 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

DDR4
MSI B450 Gaming Pro Carbon AC uses DDR4 memory, which is newer than that of 13.6% of motherboards and equal to that of 51% 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
MSI B450 Gaming Pro Carbon AC 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

128 GB
MSI B450 Gaming Pro Carbon AC supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 32.1% of motherboards.
requires BIOS update for full capacity
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
MSI B450 Gaming Pro Carbon AC 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

3,466 MT/s
MSI B450 Gaming Pro Carbon AC supports memory speeds up to 3466 MT/s, which is lower than that of 60.9% of motherboards and equal to that of 0.6% 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

2
MSI B450 Gaming Pro Carbon AC 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 3.0 x4/SATA, 1x PCIe 2.0 x4
MSI B450 Gaming Pro Carbon AC offers 1x PCIe 3.0x4/SATA, 1x PCIe 2.0x4 for M.2 slot interfaces, which is slower than that of 63.4% of motherboards and equal to that of 0.3% 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
MSI B450 Gaming Pro Carbon AC has 6 SATA 3 connectors, which is more than 52.6% of motherboards and equal to 32.1% of motherboards.
some SATA ports disabled with certain M.2 use
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

0/1/10
MSI B450 Gaming Pro Carbon AC supports RAID levels 0/1/10, which is narrower than 68.3% of motherboards and equal to 23.2% of motherboards.
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
MSI B450 Gaming Pro Carbon AC 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
MSI B450 Gaming Pro Carbon AC 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

0
MSI B450 Gaming Pro Carbon AC has 0 PCIe 4.0x16 slots, which is equal to 55.6% 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

1
MSI B450 Gaming Pro Carbon AC has 1 PCIe 3.0x16 slots, which is more than 40.6% of motherboards and equal to 26.7% 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/x4/x1, x16/x0/x4
MSI B450 Gaming Pro Carbon AC uses x16/x4/x1, x16/x0/x4 for PCIe slot electrical configuration, which is more flexible than that of 79.3% of motherboards.
Depends on slot/M.2 population.
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
MSI B450 Gaming Pro Carbon AC 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
MSI B450 Gaming Pro Carbon AC 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

12
MSI B450 Gaming Pro Carbon AC has 12 USB ports (including headers), which is fewer than 72.4% of motherboards and equal to 16.6% 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
MSI B450 Gaming Pro Carbon AC 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

1
MSI B450 Gaming Pro Carbon AC has 1 USB-C ports (including headers), which is more than 30.5% of motherboards and equal to 21.3% 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
MSI B450 Gaming Pro Carbon AC 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

1 Gbps
MSI B450 Gaming Pro Carbon AC supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.1% 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

Intel I211-AT
MSI B450 Gaming Pro Carbon AC uses the Intel I211-AT LAN controller, which is less advanced than that of 66.6% of motherboards and equal to that of 3.2% of motherboards.
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
MSI B450 Gaming Pro Carbon AC 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
MSI B450 Gaming Pro Carbon AC 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 5 (802.11ac)
MSI B450 Gaming Pro Carbon AC supports Wi-Fi 5 (802.11ac), which is newer than that of 49.7% of motherboards and equal to that of 10.7% of motherboards.
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 ALC1220
MSI B450 Gaming Pro Carbon AC uses the Realtek ALC1220 audio codec, which is more advanced than that of 65.1% of motherboards and equal to that of 13% 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
MSI B450 Gaming Pro Carbon AC 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

120 dB
MSI B450 Gaming Pro Carbon AC has an audio SNR of 120 dB, which is higher than that of 55% of motherboards and equal to that of 41.5% of motherboards.
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

yes
MSI B450 Gaming Pro Carbon AC supports a headphone amp. 37% 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

5
MSI B450 Gaming Pro Carbon AC has 5 3.5mm audio jacks, which is more than 49.8% of motherboards and equal to 36.8% 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

4+2
MSI B450 Gaming Pro Carbon AC has 4+2 VRM phases, which is fewer than 88.6% of motherboards and equal to 5.8% 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

2
MSI B450 Gaming Pro Carbon AC has 2 CPU power connectors, which is more than 54.6% of motherboards and equal to 45.3% 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
MSI B450 Gaming Pro Carbon AC 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
MSI B450 Gaming Pro Carbon AC 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
MSI B450 Gaming Pro Carbon AC 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

MSI B450 Gaming Pro Carbon AC vs the average motherboard

  • 1 more CPU power connectors
    MSI B450 Gaming Pro Carbon AC has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 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

    MSI B450 Gaming Pro Carbon AC has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.2 vs 1
  • 1 more USB 3.2 Gen2 USB-C ports
    MSI B450 Gaming Pro Carbon AC has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-C ports on the motherboard.
    When it matters: When you want faster rear USB-C connectivity.

    Importance: HIGH

    Good value: >=1

    MSI B450 Gaming Pro Carbon AC has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.1 vs 0
  • Supports Wi-Fi
    MSI B450 Gaming Pro Carbon AC 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

    MSI B450 Gaming Pro Carbon AC supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • More flexible PCIe lane configuration
    MSI B450 Gaming Pro Carbon AC has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1, x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
    Depends on slot/M.2 population.
    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

    MSI B450 Gaming Pro Carbon AC has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1, x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.x16/x4/x1, x16/x0/x4 vs x16/x1
  • 1 more PCIe 2.0x16 slots
    MSI B450 Gaming Pro Carbon AC has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.
    What it is: The number of PCIe 2.0 x16 physical slots on the motherboard.
    When it matters: When you compare older full-length expansion options.

    Importance: LOW

    MSI B450 Gaming Pro Carbon AC has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.1 vs 0
  • Newer CPU socket
    MSI B450 Gaming Pro Carbon AC has newer CPU socket than the average motherboard (AM4 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

    MSI B450 Gaming Pro Carbon AC has newer CPU socket than the average motherboard (AM4 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.AM4 vs LGA 1151
  • 2 more PCIe x1 slots
    MSI B450 Gaming Pro Carbon AC has more PCIe x1 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    What it is: The number of PCIe x1 slots on the motherboard.
    When it matters: When you want space for smaller add-in cards.

    Importance: MEDIUM

    Good value: >=2

    MSI B450 Gaming Pro Carbon AC has more PCIe x1 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe x1 slot/s.3 vs 1
  • Supports Bluetooth
    MSI B450 Gaming Pro Carbon AC supports Bluetooth, while the average motherboard does not. 47% of motherboards support Bluetooth.
    What it is: Shows whether the motherboard includes built-in Bluetooth for wireless peripherals and accessories.
    When it matters: When you want to connect wireless peripherals without an adapter.

    Importance: LOW

    MSI B450 Gaming Pro Carbon AC supports Bluetooth, while the average motherboard does not. 47% of motherboards support Bluetooth.
  • Newer CPU socket
    MSI B450 Gaming Pro Carbon AC has newer CPU socket than the average motherboard (AM4 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Broader Windows support
    MSI B450 Gaming Pro Carbon AC has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • 2 more SATA 3 connectors
    MSI B450 Gaming Pro Carbon AC has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
  • More flexible PCIe lane configuration
    MSI B450 Gaming Pro Carbon AC has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1, x16/x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 1 more PCIe 2.0x16 slots
    MSI B450 Gaming Pro Carbon AC has more PCIe 2.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 2.0x16 slot/s.
  • 2 more PCIe x1 slots
    MSI B450 Gaming Pro Carbon AC has more PCIe x1 slots than the average motherboard (3 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 more USB 3.2 Gen2 USB-C ports
    MSI B450 Gaming Pro Carbon AC has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
  • Supports Wi-Fi
    MSI B450 Gaming Pro Carbon AC supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • Supports Bluetooth
    MSI B450 Gaming Pro Carbon AC supports Bluetooth, while the average motherboard does not. 47% of motherboards support Bluetooth.
  • Better audio codec
    MSI B450 Gaming Pro Carbon AC has better audio codec than the average motherboard (Realtek ALC1,220 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 5 dB higher audio SNR
    MSI B450 Gaming Pro Carbon AC has a higher audio SNR than the average motherboard (120 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • 1 more CPU power connectors
    MSI B450 Gaming Pro Carbon AC has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
  • 1 more RGB headers
    MSI B450 Gaming Pro Carbon AC has more RGB headers than the average motherboard (2 vs 1). The average motherboard has 1 RGB header/s.
  • 1 more fan headers
    MSI B450 Gaming Pro Carbon AC has more fan headers than the average motherboard (6 vs 5). The average motherboard has 5 fan header/s.

Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling
  • More basic motherboard chipset
    MSI B450 Gaming Pro Carbon AC has more basic motherboard chipset than the average motherboard (AMD B450 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • 24.7% lower maximum RAM speed
    MSI B450 Gaming Pro Carbon AC has a lower maximum RAM speed than the average motherboard (3,466 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 29.7% lower overclocked RAM speed
    MSI B450 Gaming Pro Carbon AC has a lower overclocked RAM speed than the average motherboard (3,466 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • Slower M.2 slot interfaces
    MSI B450 Gaming Pro Carbon AC has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA, 1x PCIe 2.0x4 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.
  • Fewer RAID options
    MSI B450 Gaming Pro Carbon AC has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
  • No PCIe bifurcation support
    MSI B450 Gaming Pro Carbon AC does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 2 fewer rear USB ports
    MSI B450 Gaming Pro Carbon AC has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 3 fewer total USB connections
    MSI B450 Gaming Pro Carbon AC has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.
  • 2 fewer USB 3.2 Gen1 ports
    MSI B450 Gaming Pro Carbon AC 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.
  • Older HDMI version
    MSI B450 Gaming Pro Carbon AC has older HDMI version than the average motherboard (1.4 vs 2.1). The average motherboard supports HDMI 2.1.
  • 60% lower LAN speed
    MSI B450 Gaming Pro Carbon AC has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
  • Older Bluetooth version
    MSI B450 Gaming Pro Carbon AC has older Bluetooth version than the average motherboard (5 vs 5.4). The average motherboard supports Bluetooth 5.4.
  • Fewer VRM phases
    MSI B450 Gaming Pro Carbon AC has fewer VRM phases than the average motherboard (4+2 vs 10). The average motherboard has 10 VRM phase/s.
  • 1 fewer ARGB headers
    MSI B450 Gaming Pro Carbon AC has fewer ARGB headers than the average motherboard (1 vs 2). The average motherboard has 2 ARGB header/s.
    plus 1 Corsair-specific header
  • 61 mm wider
    MSI B450 Gaming Pro Carbon AC is wider than the average motherboard (305 mm vs 244 mm). The average motherboard width is 244 mm.
  • 60% lower LAN speed
    MSI B450 Gaming Pro Carbon AC has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
    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

    MSI B450 Gaming Pro Carbon AC has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.1 Gbps vs 2.5 Gbps
  • More basic motherboard chipset
    MSI B450 Gaming Pro Carbon AC has more basic motherboard chipset than the average motherboard (AMD B450 vs Intel B860). The average motherboard uses Intel B860 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

    MSI B450 Gaming Pro Carbon AC has more basic motherboard chipset than the average motherboard (AMD B450 vs Intel B860). The average motherboard uses Intel B860 chipset.AMD B450 vs Intel B860
  • Slower M.2 slot interfaces
    MSI B450 Gaming Pro Carbon AC has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA, 1x PCIe 2.0x4 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

    MSI B450 Gaming Pro Carbon AC has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA, 1x PCIe 2.0x4 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 3.0x4/SATA, 1x PCIe 2.0x4 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 2 fewer rear USB ports
    MSI B450 Gaming Pro Carbon AC 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

    MSI B450 Gaming Pro Carbon AC has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • No PCIe bifurcation support
    MSI B450 Gaming Pro Carbon AC 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

    MSI B450 Gaming Pro Carbon AC does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 3 fewer total USB connections
    MSI B450 Gaming Pro Carbon AC has fewer total USB connections than the average motherboard (12 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

    MSI B450 Gaming Pro Carbon AC has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.12 vs 15
  • Fewer VRM phases
    MSI B450 Gaming Pro Carbon AC has fewer VRM phases than the average motherboard (4+2 vs 10). The average motherboard has 10 VRM phase/s.
    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

    MSI B450 Gaming Pro Carbon AC has fewer VRM phases than the average motherboard (4+2 vs 10). The average motherboard has 10 VRM phase/s.4+2 vs 10
  • Fewer RAID options
    MSI B450 Gaming Pro Carbon AC has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    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

    MSI B450 Gaming Pro Carbon AC has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.0/1/10 vs 0/1/5/10
Total
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling

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Third-party reviews

United Kingdom
amazon
4.7
762 Reviews

(Reviews last updated: May 2026)

What customers like about MSI B450 Gaming Pro Carbon AC?

  • Superior VRM configuration for a B450 board, providing excellent power delivery and thermal efficiency
  • High-quality integrated features including fast Intel Wi-Fi and Bluetooth connectivity
  • Excellent audio solution utilizing the ALC1220 codec and Nahimic 3 software
  • Sleek, professional all-black design with tasteful, minimal RGB lighting
  • Convenient Flash BIOS button allowing for BIOS updates without a CPU installed
  • Dual M.2 slots, including one with a 'M.2 Shield' thermal heatsink to prevent throttling

What customers dislike about MSI B450 Gaming Pro Carbon AC?

  • BIOS storage limitations led to a 'Lite' version (GSE-Lite) for Ryzen 3000/5000 support, losing the high-end 'Click BIOS 5' interface
  • Occasional long boot times and stability issues reported when used with newer Zen 2/3 processors
  • Using the second M.2 slot or certain PCIe slots can disable several SATA ports due to shared bandwidth
  • Higher power consumption at idle compared to similar mid-range motherboards
  • Lack of advanced BIOS features like Voltage Offset for Precision Boost Overdrive (PBO) in earlier versions

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