OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Motherboards Methodology v1.0
Motherboards Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo Motherboards Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore Motherboards Methodology v1.0

BIOSTAR B450MX S Review | 107 Data compared

Avg. price:~£130CPU socket:AM4Chipset:AMD B450Form factor:microATX

BIOSTAR B450MX S Review: Compare 107 technical specifications and user reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

5.1

Overall score

Score
5.1/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 80% of models
Score components

90%

4.8

Technical score

10%

8.0

User score

â–¼Worse than 80% of motherboards
4.8

Technical score

Technical score
4.8/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components

19%

6.8

Memory

16%

7.4

Platform & Features

16%

4.5

Storage

15%

3.3

Network

13%

1.9

Ports & USB

8%

3.0

Expansion

8%

4.2

Power & Cooling

5%

6.5

Audio

â–¼Worse than 82% of motherboards
8.0

User score

User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 64% of models
Score components

70%

9.6

User ratings

30%

4.2

Number of reviews

Based on 22 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 64% of motherboards
  • biostar-b450mx-s
  • biostar-b450mx-s
  • biostar-b450mx-s
  • biostar-b450mx-s
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biostar-b450mx-s
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biostar-b450mx-s

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Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of motherboard BIOSTAR B450MX S

Technical score
Technical score
4.8/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components:

19%

6.8

Memory

16%

7.4

Platform & Features

16%

4.5

Storage

15%

3.3

Network

13%

1.9

Ports & USB

8%

3.0

Expansion

8%

4.2

Power & Cooling

5%

6.5

Audio

4.8
User score
User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 64% of models
Score components

70%

9.6

User ratings

30%

4.2

Number of reviews

Based on 22 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
8.0
Popularity
Popularity
4.2/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 69% of models
Popularity:
BIOSTAR B450MX S has a popularity score of 4.2 points, which is lower than that of 68.7% of products in this category.
4.2
Value for money
Value for money
6.6/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 79% of models
Score components:

60%

5.1

Overall score

40%

9.8

Price

6.6
Brand name
Biostar
CPU socket
AM4
CPU socket
AM4
â–¼ Worse than 48% of models
This motherboard 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
AMD
CPU platform
AMD
â–¼ Worse than 68% of models
This motherboard is built for the AMD CPU platform, which is less common than that of 68.5% of motherboards and equal to that of 31.5% of motherboards.
Chipset
AMD B450
Chipset
AMD B450
â–¼ Worse than 55% of models
This motherboard 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
microATX
Form factor
microATX
â–¼ Worse than 52% of models
This motherboard 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
DDR4
DDR memory version
DDR4
â–¼ Worse than 36% of models
This motherboard uses DDR4 memory, which is newer than that of 13.5% of motherboards and equal to that of 50.8% of motherboards.
Memory slots
4
Memory slots
4
â–² Better than 21% of models
Market range: <2 – >4
This motherboard has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
128 GB
Maximum memory capacity
128 GB
â–² Better than 40% of models
Market range: <32 GB – >256 GB
This motherboard supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 31.9% of motherboards.
Memory channels
2
Memory channels
2
â–¼ Worse than 7% of models
This motherboard supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.6% of motherboards.
Maximum RAM speed
2,667 MT/s
Maximum RAM speed
2,667 MT/s
â–¼ Worse than 78% of models
Market range: <2k MT/s – >8k MT/s
This motherboard supports memory speeds up to 2,667 MT/s, which is lower than that of 78% of motherboards and equal to that of 1% of motherboards.
maximum depends on CPU configuration
Show more
N. of M.2 sockets
1
N. of M.2 sockets
1
â–¼ Worse than 69% of models
Market range: <0 – >4
This motherboard has 1 M.2 sockets, which is fewer than 69.3% of motherboards and equal to 19.1% of motherboards.
M.2 slot interface per slot
1x PCIe 3.0 x4/SATA
M.2 slot interface per slot
1x PCIe 3.0 x4/SATA
â–¼ Worse than 74% of models
This motherboard offers 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is slower than that of 74.3% of motherboards and equal to that of 10.4% of motherboards.
N. of SATA 3 connectors
4
N. of SATA 3 connectors
4
â–¼ Worse than 48% of models
Market range: <4 – >8
This motherboard has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.2% of motherboards.
Supported RAID levels
0/1/10
Supported RAID levels
0/1/10
â–¼ Worse than 68% of models
This motherboard supports RAID levels 0/1/10, which is narrower than 68.1% of motherboards and equal to 23.3% of motherboards.
NVMe RAID support
no
NVMe RAID support
no
â–¼ Worse than 60% of models
This motherboard does not support NVMe RAID. 59.8% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
0
N. of PCIe 5.0 x16 slots
0
â–¼ Worse than 31% of models
Market range: <0 – >1
This motherboard has 0 PCIe 5.0x16 slots, which is fewer than 31.5% of motherboards and equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
0
N. of PCIe 4.0 x16 slots
0
â–¼ Worse than 45% of models
Market range: <0 – >1
This motherboard has 0 PCIe 4.0x16 slots, which is fewer than 44.5% of motherboards and equal to 55.5% of motherboards.
N. of PCIe 3.0 x16 slots
1
N. of PCIe 3.0 x16 slots
1
â–² Better than 40% of models
Market range: <0 – >3
This motherboard has 1 PCIe 3.0x16 slots, which is more than 40.5% of motherboards and equal to 26.8% of motherboards.
PCIe slot electrical configuration
x16/x4/x1
PCIe slot electrical configuration
x16/x4/x1
â–² Better than 78% of models
This motherboard uses x16/x4/x1 for PCIe slot electrical configuration, which is more flexible than that of 77.7% of motherboards and equal to that of 5.9% of motherboards.
PCIe bifurcation support
no
PCIe bifurcation support
no
â–¼ Worse than 60% of models
This motherboard does not support PCIe bifurcation. 59.7% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
6
Total USB ports (rear I/O)
6
â–¼ Worse than 64% of models
Market range: <6 – >10
This motherboard has 6 USB ports (rear I/O), which is fewer than 64.3% of motherboards and equal to 32.7% of motherboards.
Total USB ports (including headers)
12
Total USB ports (including headers)
12
â–¼ Worse than 73% of models
Market range: <11 – >19
This motherboard has 12 USB ports (including headers), which is fewer than 72.6% of motherboards and equal to 16.3% of motherboards.
Total USB-C ports (rear I/O)
0
Total USB-C ports (rear I/O)
0
â–¼ Worse than 65% of models
Market range: <0 – >2
This motherboard 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)
0
Total USB-C ports (including headers)
0
â–¼ Worse than 70% of models
Market range: <0 – >3
This motherboard has 0 USB-C ports (including headers), which is fewer than 69.7% of motherboards and equal to 30.3% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
N. of USB 3.2 Gen2x2 ports (USB-C)
0
â–¼ Worse than 18% of models
Market range: <0 – >1
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18.3% of motherboards and equal to 81.7% of motherboards.
Show more
LAN speed
1 Gbps
LAN speed
1 Gbps
â–¼ Worse than 51% of models
Market range: <1 Gbps – >2.5 Gbps
This motherboard supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.2% of motherboards.
LAN controller
Killer + Intel + Realtek
LAN controller
Killer + Intel + Realtek
â–¼ Worse than 65% of models
This motherboard uses the Killer + Intel + Realtek LAN controller, which is less advanced than that of 64.6% of motherboards and equal to that of 28.7% of motherboards.
N. of RJ45 ports
1
N. of RJ45 ports
1
â–¼ Worse than 14% of models
Market range: <1 – >2
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
no
Wi-Fi connectivity
no
â–¼ Worse than 50% of models
This motherboard does not support Wi-Fi connectivity. 50.1% of motherboards support this feature.
Wi-Fi version
N/A
Show more
Audio codec
Realtek ALC887
Audio codec
Realtek ALC887
â–¼ Worse than 89% of models
This motherboard uses the Realtek ALC887 audio codec, which is less advanced than that of 89% of motherboards and equal to that of 7.8% of motherboards.
Audio channels
7.1
Audio channels
7.1
â–² Better than 5% of models
This motherboard offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
95 dB
Audio SNR
95 dB
â–¼ Worse than 82% of models
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 95 dB, which is lower than that of 82.5% of motherboards and equal to that of 10.6% of motherboards.
Headphone amp support
yes
Headphone amp support
yes
â–² Better than 41% of models
This motherboard supports a headphone amp. 40.8% of motherboards support this feature.
N. of 3.5mm audio jacks
3
N. of 3.5mm audio jacks
3
â–¼ Worse than 50% of models
Market range: <2 – >6
This motherboard has 3 3.5mm audio jacks, which is fewer than 50.4% of motherboards and equal to 38.1% of motherboards.
Show more
VRM phases
4+2
VRM phases
4+2
â–¼ Worse than 88% of models
This motherboard has 4+2 VRM phases, which is fewer than 88.4% of motherboards and equal to 5.4% of motherboards.
N. of CPU power connectors
1
N. of CPU power connectors
1
â–¼ Worse than 45% of models
Market range: <1 – >2
This motherboard has 1 CPU power connectors, which is fewer than 45.5% of motherboards and equal to 54.5% of motherboards.
N. of fan headers
3
N. of fan headers
3
â–¼ Worse than 77% of models
Market range: <3 – >8
This motherboard has 3 fan headers, which is fewer than 77.1% of motherboards and equal to 14.8% of motherboards.
Pump header
no
Pump header
no
â–¼ Worse than 78% of models
This motherboard does not have a pump header. 78.1% of motherboards include this feature.
Pump header max current
0 A
Pump header max current
0 A
â–¼ Worse than 76% of models
Market range: <0 A – >3 A
This motherboard supports up to 0 A on the pump header, which is lower than that of 76% of motherboards and equal to that of 24% of motherboards.
Show more

BIOSTAR B450MX S vs the average motherboard

246810TotalPlatform & FeaturesMemoryStorageExpansionPorts & USBNetworkAudioPower & Cooling
  • Newer CPU socket
    CPU socket
    AM4
    â–¼ Worse than 48% of models
    This motherboard has newer CPU socket than the average motherboard (AM4 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM4 vs LGA 1,151
  • Includes VGA connector
    VGA connector
    yes
    â–² Better than 75% of models
    This motherboard has a VGA connector, while the average motherboard does not. 24.7% of motherboards include a VGA connector.
  • Broader Windows support
    Supported Windows versions
    Windows 11, Windows 10, Windows 7
    â–² Better than 84% of models
    This motherboard 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.
    Windows 11, Windows 10, Windows 7 vs Windows 11, Windows 10
  • 61 mm shorter
    Height
    244 mm
    â–² Better than 62% of models
    Market range: <170 mm – >320 mm
    This motherboard is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    244 mm vs 305 mm
  • More flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4/x1
    â–² Better than 78% of models
    This motherboard has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    x16/x4/x1 vs x16/x0/x4, x8/x8/x4
  • Newer CPU socket
    CPU socket
    AM4
    â–¼ Worse than 48% of models
    This motherboard has newer CPU socket than the average motherboard (AM4 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM4 vs LGA 1,151
  • Broader Windows support
    Supported Windows versions
    Windows 11, Windows 10, Windows 7
    â–² Better than 84% of models
    This motherboard 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.
    Windows 11, Windows 10, Windows 7 vs Windows 11, Windows 10
  • More flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4/x1
    â–² Better than 78% of models
    This motherboard has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    x16/x4/x1 vs x16/x0/x4, x8/x8/x4
  • Includes VGA connector
    VGA connector
    yes
    â–² Better than 75% of models
    This motherboard has a VGA connector, while the average motherboard does not. 24.7% of motherboards include a VGA connector.
  • 61 mm shorter
    Height
    244 mm
    â–² Better than 62% of models
    Market range: <170 mm – >320 mm
    This motherboard is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    244 mm vs 305 mm
  • 60% lower LAN speed
    LAN speed
    1 Gbps
    â–¼ Worse than 51% of models
    Market range: <1 Gbps – >2.5 Gbps
    This motherboard 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
    Chipset
    AMD B450
    â–¼ Worse than 55% of models
    This motherboard 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
    M.2 slot interface per slot
    1x PCIe 3.0 x4/SATA
    â–¼ Worse than 74% of models
    This motherboard has slower M.2 slot interfaces than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No NVMe RAID support
    NVMe RAID support
    no
    â–¼ Worse than 60% of models
    This motherboard does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 2 fewer rear USB ports
    Total USB ports (rear I/O)
    6
    â–¼ Worse than 64% of models
    Market range: <6 – >10
    This motherboard has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    6 vs 8
  • 1 fewer M.2 sockets
    N. of M.2 sockets
    1
    â–¼ Worse than 69% of models
    Market range: <0 – >4
    This motherboard has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
    1 vs 2
  • 1 fewer rear USB-C ports
    Total USB-C ports (rear I/O)
    0
    â–¼ Worse than 65% of models
    Market range: <0 – >2
    This motherboard 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 connectivity
    Wi-Fi connectivity
    no
    â–¼ Worse than 50% of models
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • 13.1% worse value for money
    BIOSTAR B450MX S has worse value for money than the average motherboard (6.56 vs 7.4).
    6.56 vs 7.41
  • 49.3% less popular
    BIOSTAR B450MX S is less popular than the average motherboard (4.19 vs 6.3).
    4.19 vs 6.26
  • More basic motherboard chipset
    Chipset
    AMD B450
    â–¼ Worse than 55% of models
    This motherboard 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
  • No BIOS flashback support
    BIOS flashback
    no
    â–¼ Worse than 51% of models
    This motherboard does not support BIOS flashback, while the average motherboard does. 50.9% of motherboards support BIOS flashback.
  • Fewer BIOS update options
    BIOS update methods
    UEFI utility, Windows app
    â–¼ Worse than 85% of models
    This motherboard has fewer BIOS update options than the average motherboard (UEFI utility, Windows app vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
    UEFI utility, Windows app vs UEFI utility, flashback, Windows app
  • No debug LED indicators
    Debug LED indicators
    no
    â–¼ Worse than 79% of models
    This motherboard does not have debug LED indicators, while the average motherboard does. 78.7% of motherboards include debug LED indicators.
  • Fewer useful accessories
    Included accessories
    2x SATA cables, I/O shield
    â–¼ Worse than 85% of models
    This motherboard has fewer useful accessories than the average motherboard (2x SATA cables, I/O shield vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable). The average motherboard comes with 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable.
    2x SATA cables, I/O shield vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable
  • No automatic overclocking
    Automatic overclocking
    no
    â–¼ Worse than 74% of models
    This motherboard does not support automatic overclocking, while the average motherboard does. 74.2% of motherboards support automatic overclocking.
  • Older CPU platform
    CPU platform
    AMD
    â–¼ Worse than 68% of models
    This motherboard uses the AMD CPU platform compared to Intel on the average motherboard. The average motherboard uses Intel CPU platform.
    AMD vs Intel
  • Less versatile form factor
    Form factor
    microATX
    â–¼ Worse than 52% of models
    This motherboard has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
    microATX vs ATX
  • No TPM connector
    TPM connector
    no
    â–¼ Worse than 88% of models
    This motherboard does not have a TPM connector, while the average motherboard does. 88% of motherboards include a TPM connector.
    Firmware TPM/PTT only.
  • 43.7% lower maximum RAM speed
    Maximum RAM speed
    2,667 MT/s
    â–¼ Worse than 78% of models
    Market range: <2k MT/s – >8k MT/s
    This motherboard has a lower maximum RAM speed than the average motherboard (2667 MT/s vs 4733 MT/s). The average motherboard supports RAM speed of 4733 MT/s.
    maximum depends on CPU configuration
    2,667 MT/s vs 4,733 MT/s
  • Slower M.2 slot interfaces
    M.2 slot interface per slot
    1x PCIe 3.0 x4/SATA
    â–¼ Worse than 74% of models
    This motherboard has slower M.2 slot interfaces than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No NVMe RAID support
    NVMe RAID support
    no
    â–¼ Worse than 60% of models
    This motherboard does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 1 fewer M.2 sockets
    N. of M.2 sockets
    1
    â–¼ Worse than 69% of models
    Market range: <0 – >4
    This motherboard has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
    1 vs 2
  • Fewer RAID options
    Supported RAID levels
    0/1/10
    â–¼ Worse than 68% of models
    This motherboard 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
  • No PCIe bifurcation support
    PCIe bifurcation support
    no
    â–¼ Worse than 60% of models
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • No multi-GPU support
    Multi-GPU support
    no
    â–¼ Worse than 55% of models
    This motherboard does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 2 fewer rear USB ports
    Total USB ports (rear I/O)
    6
    â–¼ Worse than 64% of models
    Market range: <6 – >10
    This motherboard has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    6 vs 8
  • 1 fewer rear USB-C ports
    Total USB-C ports (rear I/O)
    0
    â–¼ Worse than 65% of models
    Market range: <0 – >2
    This motherboard 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
  • 3 fewer total USB connections
    Total USB ports (including headers)
    12
    â–¼ Worse than 73% of models
    Market range: <11 – >19
    This motherboard has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.
    12 vs 15
  • 1 fewer USB 3.2 Gen2 ports
    N. of USB 3.2 Gen2 ports (USB-A)
    0
    â–¼ Worse than 63% of models
    Market range: <0 – >4
    This motherboard 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
  • 1 fewer DisplayPort outputs
    N. of DisplayPort outputs
    0
    â–¼ Worse than 54% of models
    Market range: <0 – >1
    This motherboard has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
    0 vs 1
  • Older HDMI version
    HDMI version
    1.4
    â–¼ Worse than 55% of models
    This motherboard has older HDMI version than the average motherboard (1.4 vs 2.1). The average motherboard supports HDMI 2.1.
    1.4 vs 2.1
  • 1 fewer total USB-C connections
    Total USB-C ports (including headers)
    0
    â–¼ Worse than 70% of models
    Market range: <0 – >3
    This motherboard has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
    0 vs 1
  • 60% lower LAN speed
    LAN speed
    1 Gbps
    â–¼ Worse than 51% of models
    Market range: <1 Gbps – >2.5 Gbps
    This motherboard 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
  • No Wi-Fi connectivity
    Wi-Fi connectivity
    no
    â–¼ Worse than 50% of models
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • No Wi-Fi antenna included
    Wi-Fi antenna included
    no
    â–¼ Worse than 51% of models
    This motherboard does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 20 dB lower audio SNR
    Audio SNR
    95 dB
    â–¼ Worse than 82% of models
    Market range: <95 dB – >120 dB
    This motherboard has a lower audio SNR than the average motherboard (95 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    95 dB vs 115 dB
  • More basic audio codec
    Audio codec
    Realtek ALC887
    â–¼ Worse than 89% of models
    This motherboard has more basic audio codec than the average motherboard (Realtek ALC887 vs Realtek ALC897). The average motherboard uses Realtek ALC897 audio codec.
    Realtek ALC887 vs Realtek ALC897
  • 2 fewer 3.5mm audio jacks
    N. of 3.5mm audio jacks
    3
    â–¼ Worse than 50% of models
    Market range: <2 – >6
    This motherboard 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 optical S/PDIF out
    Optical S/PDIF out (TOSLINK)
    no
    â–¼ Worse than 56% of models
    This motherboard does not have optical S/PDIF out, while the average motherboard does. 55.8% of motherboards include optical S/PDIF out.
  • Fewer VRM phases
    VRM phases
    4+2
    â–¼ Worse than 88% of models
    This motherboard has fewer VRM phases than the average motherboard (4+2 vs 10). The average motherboard has 10 VRM phase/s.
    4+2 vs 10
  • 2 fewer ARGB headers
    N. of ARGB headers (3-pin)
    0
    â–¼ Worse than 62% of models
    Market range: <0 – >3
    This motherboard has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
    0 vs 2
  • 2.5 fewer fan headers
    N. of fan headers
    3
    â–¼ Worse than 77% of models
    Market range: <3 – >8
    This motherboard has fewer fan headers than the average motherboard (3 vs 5.5). The average motherboard has 5.5 fan header/s.
    3 vs 5.5
  • No pump header
    Pump header
    no
    â–¼ Worse than 78% of models
    This motherboard does not have a pump header, while the average motherboard does. 78.1% of motherboards include a pump header.
  • No onboard RGB lighting
    Onboard RGB lighting
    no
    â–¼ Worse than 50% of models
    This motherboard does not have onboard RGB lighting, while the average motherboard does. 50.4% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    N. of RGB headers (4-pin)
    0
    â–¼ Worse than 69% of models
    Market range: <0 – >2
    This motherboard has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
    0 vs 1
  • 2 A lower pump header current limit
    Pump header max current
    0 A
    â–¼ Worse than 76% of models
    Market range: <0 A – >3 A
    This motherboard has a lower pump header current than the average motherboard (0 A vs 2 A). The average motherboard provides pump header current of 2 A.
    0 A vs 2 A

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Third-party reviews

Based on 22 buyer reviews from online shops.
Reviews last updated: May 2026 · How we calculate this
Read buyer reviews on Amazon →

What we like about BIOSTAR B450MX S

  • High value for money, frequently cited as an excellent option for budget-conscious gaming builds
  • Supports up to 128GB of DDR4 memory across 4 DIMM slots, which is rare for many ultra-budget B450 boards
  • Solid build quality for its price point with organized component placement and durable construction
  • Good connectivity options for home entertainment, including HDMI, DVI-D, and VGA outputs
  • Includes features like M.2 support and RAID 0, 1, and 10 for flexible storage configurations
  • Ease of BIOS updates using the BIO-Flasher tool

What we don't like about BIOSTAR B450MX S

  • The UEFI BIOS interface is often described as clunky, dated, or less user-friendly compared to major competitors
  • Reports of memory compatibility issues, specifically difficulties running certain high-speed RAM (e.g., 3200MHz) or XMP profiles failing
  • VRM thermal concerns; users recommend additional cooling or avoiding high-TDP CPUs (like 8-core Ryzen chips) due to small heatsinks
  • Limited overclocking headroom and a locked current limit (reportedly around 130W) that can lead to CPU throttling on high-end processors
  • Lacks modern premium features such as integrated Wi-Fi or USB-C 20Gbps ports

Verdict

The Biostar B450MX-S is a Micro ATX motherboard based on the AMD B450 chipset, supporting AM4 socket processors including 1st, 2nd, and 3rd Gen Ryzen CPUs. Key specifications include four DIMM slots for up to 128GB of DDR4 memory with overclocking speeds up to 4333MHz, a PCIe 3.0 x16 slot, and a high-speed M.2 slot (32Gb/s) for NVMe SSDs. Its main pros are the budget-friendly price point, versatile 4-slot memory capacity which is rare in entry-level boards, and a comprehensive rear I/O featuring HDMI 4K support and USB 3.2 Gen1 ports. However, notable cons include a lack of modern USB Type-C ports, the absence of PCIe 4.0 support, and limited fan headers for advanced cooling setups.

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