OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Motherboards Methodology v3.0
Motherboards Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Motherboards Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Motherboards Methodology v3.0

ASUS Prime B450M-A II review: 109 specs compared

Avg. price:~£60CPU socket:AM4Chipset:AMD B450Form factor:microATX

ASUS Prime B450M-A II Review: Compare 109 technical specifications, 1 expert and video reviews and 1 best-of list to see how this product ranks in the Motherboards category and whether it is worth buying.

ASUS Prime B450M-A II
5.7/10

Overall score

Score
5.7/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, expert reviews, best-of lists, owners and ratings from across the web.
How we count it
Parts: Technical score 40%, Reviews score 20%, List score 20%, Sentiment score 10%, User score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 91% of models
Score components

40%

5.0

Technical score

20%

5.0

Reviews score

20%

5.0

List score

10%

8.2

Sentiment score

10%

9.3

User score

▼Worse than 91% of motherboards
7.0

Value for money

Value for money
7.0/ 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
▼
<55-66-77-88-99-10
▼ Worse than 91% of models
Score components

70%

5.7

Overall score

30%

10

Price

▼Worse than 91%
5.0

Technical score

Technical score
5.0/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 74% of models
Score components

19%

7.1

Memory

16%

7.7

Platform

16%

4.4

Storage

15%

3.0

Network

13%

2.8

Ports

8%

2.9

Expansion

8%

4.4

Power & Cooling

5%

6.5

Audio

▼Worse than 74%
5.0

Reviews score

Reviews score
5.0/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
Share: Reviews count 20% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 87% of models

5.0

Mark 7.6 is below the typical mark 8.3 of this category, so it cannot lift the score above the technical score

80%

8.2

Average grade

20%

5.0

Popularity

Grades by review (1)
1 video review, counting half as much as a written test. Reviews count 20% of the overall score.
Ratings from across the web count in the User score, not in this score.
▼Worse than 87%
9.3

User score

User score
9.3/ 10
✕
What it is
How happy buyers are with this model, based on ratings from across the web.
How we count it
Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
Share: User score counts 10% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
★ Better than 91% of models

70%

8.9

Rating

30%

10

Popularity

★Better than 91%
5.0

List score

List score
5.0/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 20% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (1)
List score: in 1 of 65 lists (2%)
▲Better than 88%
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Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What owners say about the ASUS Prime B450M-A II

Based on 64 owners sharing their experience in online comments

44%positive8%mixed48%negative

Owners value Ryzen compatibility and cool operation, but many struggle with video failures, boot problems, and unreliable BIOS settings.

What owners dislike

  • Some owners report no display and a flashing yellow LED after assembly, with the screen staying black even after BIOS and RAM changes.9
  • Some owners report the board does not power on, with an orange LED blinking and no response, and say a replacement was needed.5
  • Some owners report no video after installing newer Ryzen chips, even after a BIOS update, and some get a compatibility error.5
  • Some owners report black screens or freezes after enabling DOCP or running RAM at 3200 MHz, and say the BIOS can freeze.4
  • Some owners report SATA ports 5 and 6 are not detected, while the other ports work fine.4
  • Some owners report a BIOS update removed Windows 7 support or left the board showing a firmware failure message on restart.3
  • Some owners say RGB lighting does not work through Armoury Crate, and the board has only limited RGB connectors.3
  • Some owners report crashes or stutters in games such as Forza Horizon 5 and Fortnite.3
  • Some owners say Asus and Terabyte support was slow or unhelpful after problems appeared.3

Points mentioned by at least 3 owners, most mentioned first.

Loading category ranking...

Motherboards model ranking

Ranked #1406 of 2,078 models in Motherboards (Overall score)

Technical Specifications of motherboard ASUS Prime B450M-A II

Technical score
Technical score
5.0/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 74% of models
Score components:

19%

7.1

Memory

16%

7.7

Platform

16%

4.4

Storage

15%

3.0

Network

13%

2.8

Ports

8%

2.9

Expansion

8%

4.4

Power & Cooling

5%

6.5

Audio

5.0
Reviews score
5.0
User score
9.3
List score
5.0
Value for money
Value for money
7.0/ 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
▼
<55-66-77-88-99-10
▼ Worse than 91% of models
Score components:

70%

5.7

Overall score

30%

10

Price

7.0
CPU socket
AM4
This motherboard uses AM4, which is more up-to-date than 38.2% of Motherboards and the same as 13.3% of Motherboards.
CPU platform
AMD
Chipset
AMD B450
This motherboard uses AMD B450, which is less capable than 55.4% of Motherboards and as capable as 1.8% of Motherboards.
Form factor
microATX
Integrated graphics support
yes
This motherboard supports integrated graphics. 10.2% of motherboards support this feature.
Rear outputs: HDMI + DVI + VGA.
Show more
DDR memory version
DDR4
This motherboard uses DDR4, which is more modern than 13.4% of Motherboards and the same as 50.4% of Motherboards.
Memory slots
4
Market range: <2 – >4
This motherboard has 4 Memory slots, which is more than 21.9% of motherboards and equal to 72% of motherboards.
Maximum memory capacity
128 GB
Market range: <32 GB – >256 GB
This motherboard supports up to 128 GB of memory, which is more than 40.1% of motherboards and equal to 31.9% of motherboards.
Memory channels
2
Maximum RAM speed
4,400 MT/s
Market range: <2.1k MT/s – >8k MT/s
This motherboard supports memory speeds up to 4,400 MT/s, which is lower than that of 51.4% of motherboards and equal to that of 3% of motherboards.
Show more
N. of M.2 sockets
1
Market range: <0 – >4
This motherboard has 1 M.2 sockets, which is fewer than 69.5% of motherboards and equal to 18.9% of motherboards.
M.2 slot interface per slot
1x PCIe 3.0 x4/SATA
This motherboard offers M.2 slots: 1x PCIe 3.0x4/SATA, which is slower than 74.3% of Motherboards and the same as 10.4% of Motherboards.
N. of SATA 3 connectors
6
Market range: <4 – >8
This motherboard has 6 SATA 3 connectors, which is more than 53.5% of motherboards and equal to 31.2% of motherboards.
Supported RAID levels
0/1/10
This motherboard RAID support: 0/1/10, which is less flexible than 67.6% of Motherboards and the same as 23.6% of Motherboards.
NVMe RAID support
yes
This motherboard supports NVMe RAID. 40.2% of motherboards support this feature.
AMD RAIDXpert2 support
Show more
N. of PCIe 5.0 x16 slots
0
Market range: <0 – >1
This motherboard has 0 PCIe 5.0x16 slots, which is fewer than 31.6% of motherboards and equal to 68.4% of motherboards.
N. of PCIe 4.0 x16 slots
0
Market range: <0 – >1
This motherboard has 0 PCIe 4.0x16 slots, which is fewer than 44.8% of motherboards and equal to 55.2% of motherboards.
N. of PCIe 3.0 x16 slots
1
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/x1/x1
This motherboard splits its PCIe lanes as x16/x1/x1, which is less generous than 59% of Motherboards and the same as 5.6% of Motherboards.
PCIe bifurcation support
no
This motherboard does not support PCIe bifurcation. 59.8% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
6
Market range: <6 – >10
This motherboard has 6 USB ports (rear I/O), which is fewer than 63.8% of motherboards and equal to 32.8% of motherboards.
Total USB ports (including headers)
12
Market range: <11 – >19
This motherboard has 12 USB ports (including headers), which is fewer than 72.4% of motherboards and equal to 16.2% of motherboards.
Total USB-C ports (rear I/O)
0
Market range: <0 – >2
This motherboard has 0 USB-C ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 35.8% of motherboards.
Total USB-C ports (including headers)
0
Market range: <0 – >3
This motherboard has 0 USB-C ports (including headers), which is fewer than 69.5% of motherboards and equal to 30.5% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
Market range: <0 – >1
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18% of motherboards and equal to 82% of motherboards.
10Gbps excluded.
Show more
LAN speed
1 Gbps
Market range: <1 Gbps – >2.5 Gbps
This motherboard supports LAN speeds up to 1 Gbps, which is lower than that of 51.1% of motherboards and equal to that of 48.9% of motherboards.
LAN controller
Realtek RTL8111H
This motherboard has a Realtek RTL8111H LAN controller, which is slower than 53% of Motherboards and equal to 7.3% of Motherboards.
N. of RJ45 ports
1
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
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 ALC887/897
This motherboard uses Realtek ALC887/897, which is lower-end than 97.3% of Motherboards and the same as 0.5% of Motherboards.
Audio channels
7.1
This motherboard offers 7.1 audio channels, which is more than 4.7% of motherboards and equal to 95.3% of motherboards.
Audio SNR
97 dB
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 97 dB, which is lower than that of 65.7% of motherboards and equal to that of 16.9% of motherboards.
Headphone amp support
yes
This motherboard supports a headphone amp. 41.2% of motherboards support this feature.
N. of 3.5mm audio jacks
3
Market range: <2 – >6
This motherboard has 3 3.5mm audio jacks, which is more than 11.3% of motherboards and equal to 39.3% of motherboards.
Show more
VRM phases
4+2
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
Market range: <1 – >2
This motherboard has 1 CPU power connectors, which is fewer than 45.2% of motherboards and equal to 54.9% of motherboards.
N. of fan headers
3
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
This motherboard does not have a pump header. 77.9% of motherboards include this feature.
Pump header max current
0 A
Market range: <0 A – >3 A
This motherboard supports up to 0 A on the pump header, which is lower than that of 76.2% of motherboards and equal to that of 23.8% of motherboards.
Show more

ASUS Prime B450M-A II vs the average motherboard

246810TotalPlatformMemoryStorageExpansionPortsNetworkAudioPower & Cooling
  • 1 more USB 3.2 Gen2 ports
    This motherboard 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.
    2 vs 1
  • More up-to-date socket
    This motherboard uses a more up-to-date socket than the average motherboard (AM4 vs LGA 1151).
    AM4 vs LGA 1,151
  • Supports ECC memory
    This motherboard supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
    ECC requires compatible CPU.
  • More capable LAN controller
    This motherboard has a faster LAN controller than the average motherboard (Realtek RTL8111H vs Killer + Intel + Realtek).
    Realtek RTL8111H vs Killer + Intel + Realtek
  • 25.7% higher user score
    User score
    9.3/ 10
    ✕
    What it is
    How happy buyers are with this model, based on ratings from across the web.
    How we count it
    Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
    Share: User score counts 10% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ★ Better than 91% of models

    70%

    8.9

    Rating

    30%

    10

    Popularity

    9.3 vs 7.4
  • 2.5x cheaper
    ASUS Prime B450M-A II is cheaper than the average motherboard (£60 vs £150).
    £60 vs £150
  • 2 more SATA 3 connectors
    This motherboard has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
    6 vs 4
  • 1 more PCIe x1 slots
    This motherboard has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    2 vs 1
  • 25.7% higher user score
    User score
    9.3/ 10
    ✕
    What it is
    How happy buyers are with this model, based on ratings from across the web.
    How we count it
    Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
    Share: User score counts 10% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ★ Better than 91% of models

    70%

    8.9

    Rating

    30%

    10

    Popularity

    9.3 vs 7.4
  • 2.5x cheaper
    ASUS Prime B450M-A II is cheaper than the average motherboard (£60 vs £150).
    £60 vs £150
  • More up-to-date socket
    This motherboard uses a more up-to-date socket than the average motherboard (AM4 vs LGA 1151).
    AM4 vs LGA 1,151
  • Supports ECC memory
    This motherboard supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
    ECC requires compatible CPU.
  • 2 more SATA 3 connectors
    This motherboard has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
    6 vs 4
  • 1 more PCIe x1 slots
    This motherboard has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    2 vs 1
  • 1 more USB 3.2 Gen2 ports
    This motherboard 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.
    2 vs 1
  • More capable LAN controller
    This motherboard has a faster LAN controller than the average motherboard (Realtek RTL8111H vs Killer + Intel + Realtek).
    Realtek RTL8111H vs Killer + Intel + Realtek
  • 60% lower LAN speed
    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 chipset
    This motherboard uses a more basic chipset than the average motherboard (AMD B450 vs Intel B860).
    AMD B450 vs Intel B860
  • Slower NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 35.9% lower list score
    List score
    5.0/ 10
    ✕
    What it is
    How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
    How we count it
    Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 20% of the overall score.
    Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
    Lists with this model (1)
    List score: in 1 of 65 lists (2%)
    5.0 vs 7.8
  • 2 fewer rear USB ports
    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
  • 31.5% lower review score
    Reviews score
    5.0/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
    Share: Reviews count 20% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▼ Worse than 87% of models

    5.0

    Mark 7.6 is below the typical mark 8.3 of this category, so it cannot lift the score above the technical score

    80%

    8.2

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 video review, counting half as much as a written test. Reviews count 20% of the overall score.
    Ratings from across the web count in the User score, not in this score.
    5.0 vs 7.3
  • No Wi-Fi connectivity
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • 1 fewer M.2 sockets
    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
  • 35.9% lower list score
    List score
    5.0/ 10
    ✕
    What it is
    How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
    How we count it
    Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 20% of the overall score.
    Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
    Lists with this model (1)
    List score: in 1 of 65 lists (2%)
    5.0 vs 7.8
  • 31.5% lower review score
    Reviews score
    5.0/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
    Share: Reviews count 20% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▼ Worse than 87% of models

    5.0

    Mark 7.6 is below the typical mark 8.3 of this category, so it cannot lift the score above the technical score

    80%

    8.2

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 video review, counting half as much as a written test. Reviews count 20% of the overall score.
    Ratings from across the web count in the User score, not in this score.
    5.0 vs 7.3
  • 9.7% worse value for money
    ASUS Prime B450M-A II has worse value for money than the average motherboard (7.02 vs 7.7).
    7.02 vs 7.7
  • More basic chipset
    This motherboard uses a more basic chipset than the average motherboard (AMD B450 vs Intel B860).
    AMD B450 vs Intel B860
  • No debug LED indicators
    This motherboard does not have debug LED indicators, while the average motherboard does. 78.7% of motherboards include debug LED indicators.
  • Slower NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 1 fewer M.2 sockets
    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
    This motherboard offers fewer RAID levels than the average motherboard (0/1/10 vs 0/1/5/10).
    0/1/10 vs 0/1/5/10
  • No PCIe bifurcation support
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • Less generous lane split
    This motherboard splits its PCIe lanes less generously than the average motherboard (x16/x1/x1 vs x16/x0/x4, x8/x8/x4).
    x16/x1/x1 vs x16/x0/x4, x8/x8/x4
  • 2 fewer rear USB ports
    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
    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
    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 DisplayPort outputs
    This motherboard has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
    other video outputs only
    0 vs 1
  • 1 fewer total USB-C connections
    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
    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
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • No Wi-Fi antenna included
    This motherboard does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 18 dB lower audio SNR
    This motherboard has a lower audio SNR than the average motherboard (97 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    97 dB vs 115 dB
  • Less capable onboard audio
    This motherboard has a lower-end audio codec than the average motherboard (Realtek ALC887/897 vs Realtek ALC897).
    Realtek ALC887/897 vs Realtek ALC897
  • No optical S/PDIF out
    This motherboard does not have optical S/PDIF out, while the average motherboard does. 55.4% of motherboards include optical S/PDIF out.
  • Fewer VRM phases
    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
    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
    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
    This motherboard does not have a pump header, while the average motherboard does. 77.9% of motherboards include a pump header.
  • 2 A lower pump header current limit
    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

7.0
YSR TECH
≈ estimated
14/04/2025
Unboxing · feature overview
Verdict
ASUS Prime B450M-A II is a simple board, but a good match for a budget Ryzen 5 build.
Hands-on video, no verdict

Third-party reviews

What customers like about ASUS Prime B450M-A II

  • Excellent value for money with broad CPU support, including Ryzen 5000 series out of the box
  • Features a BIOS Flashback button for easy updates without needing a CPU installed
  • Includes four RAM slots, which is uncommon for many budget micro-ATX boards
  • User-friendly and intuitive UEFI BIOS interface
  • Reliable and stable performance for budget gaming and productivity builds
  • Equipped with a VRM heatsink to improve cooling over the original version

What customers don't like about ASUS Prime B450M-A II

  • Limited to PCIe 3.0, lacking the faster PCIe 4.0 support found in newer chipsets
  • Only one M.2 slot for NVMe SSDs, which may limit future storage expansion
  • Limited number of chassis fan headers (only two), often requiring splitters for more fans
  • No built-in Wi-Fi or Bluetooth connectivity
  • SATA ports 5 and 6 are disabled when an M.2 SSD is in use
  • Lacks an ARGB (5V) header, though it does include a standard RGB (12V) header

Verdict

The ASUS Prime B450M-A II is a budget-friendly Micro-ATX motherboard featuring the AMD AM4 socket and B450 chipset, supporting 1st to 5th Gen Ryzen processors. Key technical specifications include four DDR4 DIMM slots for up to 128GB of RAM (overclocked to 4400MHz), a single M.2 slot with PCIe 3.0 x4 bandwidth, six SATA 6Gb/s ports, and a rear I/O offering two USB 3.2 Gen 2 Type-A ports alongside HDMI 2.0b, DVI-D, and VGA outputs. Its primary strengths are the inclusion of a BIOS FlashBack button for easy CPU-less updates, a user-friendly UEFI BIOS, and a VRM heatsink for improved thermal management compared to original non-II models. However, notable drawbacks include the lack of PCIe 4.0 support due to the older chipset, limited expansion with only one M.2 slot, and relatively sparse rear USB connectivity for modern setups.

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