OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

ASUS Prime B850 Plus Review | 107 Data compared

double-arrow
  • Avg. price in UK: ~£130
  • Avg. price in US: ~$190
  • CPU socket: AM5
  • Chipset: AMD B850
  • Form factor: ATX

ASUS Prime B850 Plus review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

8.3

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%

8.4

Technical Score

10.0%

7.9

User score

Excellent
8.4

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%

9.8

Memory

16.0%

9.2

Platform & Features

16.0%

7.8

Storage

15.0%

9.5

Network

13.0%

6.1

Ports & USB

8.0%

6.6

Expansion

8.0%

7.8

Power & Cooling

5.0%

8.3

Audio

Excellent
7.9

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%

4.5

Popularity

User score:
United Kingdom
amazon
4.7
(46)
amazon
4.6
(23)
amazon
5.0
(3)
United States
Amazon_logo.png
4.7
(33)
Amazon_logo.png
4.6
(23)

(Reviews last updated: May 2026)

Very good
  • 8.4
    Gaming

    Score components:

    28.0%

    6.0

    VRM phases

    22.0%

    7.8

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    10

    Maximum RAM speed

    15.0%

    10

    N. of PCIe 5.0 x16 slots

  • asus-prime-b850-plus
  • asus-prime-b850-plus
  • asus-prime-b850-plus
  • asus-prime-b850-plus
  • asus-prime-b850-plus
  • asus-prime-b850-plus
  • asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus
asus-prime-b850-plus

Best prices in UK

Best rankings

?

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

Verdict

The ASUS Prime B850-PLUS is an ATX motherboard designed for the AMD AM5 socket, supporting Ryzen 9000, 8000, and 7000 series processors. Key specifications include an 8+2+1 phase digital power design, support for up to 256GB of DDR5 memory at speeds exceeding 8000MT/s (OC), and a primary PCIe 5.0 x16 slot for high-end graphics cards. For storage, it provides three M.2 slots—one featuring PCIe 5.0 x4 speeds—alongside four SATA 6Gb/s ports. Connectivity highlights include a Realtek 2.5Gb Ethernet port, a rear USB 10Gbps Type-C port, and support for WiFi 6E on specific models. Main pros include its future-proof PCIe 5.0 support, robust VRM heatsinks for stable performance, and the user-friendly BIOS FlashBack feature. Cons include a relatively limited number of only four SATA ports and the absence of onboard debug LEDs for easier troubleshooting.

Technical Specifications of ASUS Prime B850 Plus

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%

9.8

Memory

16.0%

9.2

Platform & Features

16.0%

7.8

Storage

15.0%

9.5

Network

13.0%

6.1

Ports & USB

8.0%

6.6

Expansion

8.0%

7.8

Power & Cooling

5.0%

8.3

Audio

8.4
ASUS Prime B850 Plus has a technical score of 8.38 points, which is higher than that of 87.9% 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%

4.5

Popularity

User score:
United Kingdom
amazon
4.7
(46)
amazon
4.6
(23)
amazon
5.0
(3)
United States
Amazon_logo.png
4.7
(33)
Amazon_logo.png
4.6
(23)

(Reviews last updated: May 2026)

7.9
ASUS Prime B850 Plus has a user score of 7.92 points, which is lower than that of 54.5% 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.
4.5
ASUS Prime B850 Plus has a popularity of 4.5 points, which is higher than 52.3% of products in this category.
Ratio quality/price

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

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

Score components:

60.0%

8.3

Overall score

40.0%

9.8

Price

8.8
ASUS Prime B850 Plus has a quality-to-price ratio of 8.8 points, which is higher than 94.4% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: MEDIUM

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

Importance: HIGH

AM5
ASUS Prime B850 Plus uses the AM5 CPU socket, which is more advanced than that of 85.8% of motherboards and equal to that of 14.2% of motherboards.
CPU platform

Importance: MEDIUM

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

Importance: HIGH

AMD B850
ASUS Prime B850 Plus uses the AMD B850 chipset, which is more advanced than that of 89.1% of motherboards and equal to that of 3.9% 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
ASUS Prime B850 Plus 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

DDR5
ASUS Prime B850 Plus uses DDR5 memory, which is newer than that of 64.7% of motherboards and equal to that of 35.3% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: HIGH

Good value: >=4

4
ASUS Prime B850 Plus has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

256 GB
ASUS Prime B850 Plus supports up to 256 GB of memory, which is more than 82.8% of motherboards and equal to 16.5% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: MEDIUM

2
ASUS Prime B850 Plus 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

8,000 MT/s
ASUS Prime B850 Plus supports memory speeds up to 8000 MT/s, which is higher than that of 85% of motherboards and equal to that of 5.6% of motherboards.
Show more
N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

3
ASUS Prime B850 Plus has 3 M.2 sockets, which is more than 65.4% of motherboards and equal to 18.6% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: HIGH

1x PCIe 5.0 x4, 1x PCIe 4.0 x4, 1x PCIe 4.0 x2
ASUS Prime B850 Plus offers 1x PCIe 5.0x4, 1x PCIe 4.0x4, 1x PCIe 4.0x2 for M.2 slot interfaces, which is faster than that of 89% of motherboards and equal to that of 1.3% 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

4
ASUS Prime B850 Plus has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.3% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: MEDIUM

0/1/5/10
ASUS Prime B850 Plus supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% 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
ASUS Prime B850 Plus 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

1
ASUS Prime B850 Plus has 1 PCIe 5.0x16 slots, which is more than 68.6% of motherboards and equal to 26.6% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: HIGH

Good value: >=1

1
ASUS Prime B850 Plus has 1 PCIe 4.0x16 slots, which is more than 55.6% of motherboards and equal to 35.3% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: MEDIUM

2
ASUS Prime B850 Plus has 2 PCIe 3.0x16 slots, which is more than 67.4% of motherboards and equal to 15.4% of motherboards.
runs at x1 mode
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

?
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: MEDIUM

yes
ASUS Prime B850 Plus supports PCIe bifurcation. 39.1% of motherboards support this feature.
x8/x4.
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

8
ASUS Prime B850 Plus has 8 USB ports (rear I/O), which is more than 40.3% of motherboards and equal to 30.7% 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

17
ASUS Prime B850 Plus has 17 USB ports (including headers), which is more than 72.1% of motherboards and equal to 10.8% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

1
ASUS Prime B850 Plus has 1 USB-C ports (rear I/O), which is more than 35.4% of motherboards and equal to 48.8% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: MEDIUM

Good value: >=2

2
ASUS Prime B850 Plus has 2 USB-C ports (including headers), which is more than 51.8% of motherboards and equal to 32.8% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: HIGH

Good value: >=1

0
ASUS Prime B850 Plus has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
10Gbps excluded.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

2.5 Gbps
ASUS Prime B850 Plus supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.2% of motherboards and equal to that of 41.5% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

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

Importance: LOW

1
ASUS Prime B850 Plus has 1 RJ45 ports, which is equal to 85.6% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: MEDIUM

yes
ASUS Prime B850 Plus supports Wi-Fi connectivity. 50.9% of motherboards support this feature.
Wi-Fi 6E.
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 6E (802.11ax)
ASUS Prime B850 Plus supports Wi-Fi 6E (802.11ax), which is newer than that of 72.1% of motherboards and equal to that of 16.6% 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 ALC897
ASUS Prime B850 Plus uses the Realtek ALC897 audio codec, which is less advanced than that of 50.8% of motherboards and equal to that of 29.3% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
ASUS Prime B850 Plus 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
ASUS Prime B850 Plus 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
ASUS Prime B850 Plus 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

3
ASUS Prime B850 Plus has 3 3.5mm audio jacks, which is fewer than 50.3% of motherboards and equal to 38.2% of motherboards.
Show more
VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: HIGH

Good value: >=12

8+2+1
ASUS Prime B850 Plus has 8+2+1 VRM phases, which is fewer than 51.6% of motherboards and equal to 2.2% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: HIGH

Good value: >=2

2
ASUS Prime B850 Plus 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
ASUS Prime B850 Plus has 6 fan headers, which is more than 50.3% of motherboards and equal to 22.3% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: MEDIUM

yes
ASUS Prime B850 Plus has a pump header. 23.1% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

1 A
ASUS Prime B850 Plus supports up to 1 A on the pump header, which is lower than that of 58.4% of motherboards and equal to that of 15.9% of motherboards.
Show more

ASUS Prime B850 Plus vs the average motherboard

  • Newer CPU socket
    ASUS Prime B850 Plus has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
    What it is: The socket type the motherboard is built to support.
    When it matters: When you need the motherboard to match a specific CPU.

    Importance: HIGH

    ASUS Prime B850 Plus has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.AM5 vs LGA 1151
  • 2x more maximum memory capacity
    ASUS Prime B850 Plus has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    What it is: The largest total amount of RAM the motherboard supports.
    When it matters: When you plan a build with very high memory capacity.

    Importance: HIGH

    Good value: >=128 GB

    ASUS Prime B850 Plus has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.256 GB vs 128 GB
  • Newer DDR memory generation
    ASUS Prime B850 Plus has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
    What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
    When it matters: When you need the board to match a certain memory platform.

    Importance: HIGH

    Good value: DDR5

    ASUS Prime B850 Plus has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.DDR5 vs DDR4
  • 2 more USB 3.2 Gen2 ports
    ASUS Prime B850 Plus has more USB 3.2 Gen2 ports than the average motherboard (3 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-A ports on the motherboard.
    When it matters: When you want faster USB-A ports for storage or accessories.

    Importance: MEDIUM

    Good value: >=2

    ASUS Prime B850 Plus has more USB 3.2 Gen2 ports than the average motherboard (3 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.3 vs 1
  • 1 more PCIe 5.0x16 slots
    ASUS Prime B850 Plus has more PCIe 5.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 5.0x16 slot/s.
    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

    ASUS Prime B850 Plus has more PCIe 5.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 5.0x16 slot/s.1 vs 0
  • 1 more M.2 sockets
    ASUS Prime B850 Plus has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
    What it is: The number of M.2 slots available on the motherboard.
    When it matters: When you want room for more NVMe or M.2 drives.

    Importance: HIGH

    Good value: >=3

    ASUS Prime B850 Plus has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.3 vs 2
  • Integrated I/O shield
    ASUS Prime B850 Plus has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
    Pre-mounted I/O shield.
    What it is: Shows whether the rear I/O shield comes pre-mounted on the motherboard instead of being installed separately.
    When it matters: When you want an easier motherboard installation process.

    Importance: LOW

    ASUS Prime B850 Plus has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
  • 1 more CPU power connectors
    ASUS Prime B850 Plus 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

    ASUS Prime B850 Plus has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.2 vs 1
  • Newer CPU socket
    ASUS Prime B850 Plus has newer CPU socket than the average motherboard (AM5 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Integrated I/O shield
    ASUS Prime B850 Plus has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
  • Includes dual BIOS
    ASUS Prime B850 Plus has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • 4 newer release date
    ASUS Prime B850 Plus has a newer release date than the average motherboard (2,025 vs 2,021). The average motherboard was released in 2,021.
  • 2x more maximum memory capacity
    ASUS Prime B850 Plus has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • Newer DDR memory generation
    ASUS Prime B850 Plus has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
  • 73.9% higher maximum RAM speed
    ASUS Prime B850 Plus has a higher maximum RAM speed than the average motherboard (8,000 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 62.2% higher overclocked RAM speed
    ASUS Prime B850 Plus has a higher overclocked RAM speed than the average motherboard (8,000 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • 1 more M.2 sockets
    ASUS Prime B850 Plus has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
  • 1 more PCIe 5.0x16 slots
    ASUS Prime B850 Plus has more PCIe 5.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 5.0x16 slot/s.
  • 1 more PCIe 4.0x16 slots
    ASUS Prime B850 Plus has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 2 more USB 3.2 Gen2 ports
    ASUS Prime B850 Plus has more USB 3.2 Gen2 ports than the average motherboard (3 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 more USB 3.2 Gen2 USB-C ports
    ASUS Prime B850 Plus 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.
  • 2 more total USB connections
    ASUS Prime B850 Plus has more total USB connections than the average motherboard (17 vs 15). The average motherboard has 15 total USB connections.
  • 1 more USB 2.0 headers
    ASUS Prime B850 Plus has more USB 2.0 headers than the average motherboard (3 vs 2). The average motherboard has 2 USB 2.0 header/s.
  • 1 more USB4 or Thunderbolt headers
    ASUS Prime B850 Plus has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 1 more total USB-C connections
    ASUS Prime B850 Plus has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
  • Supports Wi-Fi
    ASUS Prime B850 Plus supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • 5 dB higher audio SNR
    ASUS Prime B850 Plus 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
    ASUS Prime B850 Plus has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
  • 1 more ARGB headers
    ASUS Prime B850 Plus has more ARGB headers than the average motherboard (3 vs 2). The average motherboard has 2 ARGB header/s.
  • 1 more fan headers
    ASUS Prime B850 Plus has more fan headers than the average motherboard (6 vs 5). The average motherboard has 5 fan header/s.

Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling
  • No multi-GPU support
    ASUS Prime B850 Plus does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 1 fewer PCIe x1 slots
    ASUS Prime B850 Plus has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 2 fewer USB 3.2 Gen1 ports
    ASUS Prime B850 Plus has fewer USB 3.2 Gen1 ports than the average motherboard (2 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 fewer PS/2 ports
    ASUS Prime B850 Plus has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
  • More basic audio codec
    ASUS Prime B850 Plus has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 2 fewer 3.5mm audio jacks
    ASUS Prime B850 Plus has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • No optical S/PDIF out
    ASUS Prime B850 Plus does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • 1 fewer RGB headers
    ASUS Prime B850 Plus has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 61 mm wider
    ASUS Prime B850 Plus is wider than the average motherboard (305 mm vs 244 mm). The average motherboard width is 244 mm.
  • 1 A lower pump header current limit
    ASUS Prime B850 Plus has a lower pump header current than the average motherboard (1 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • No multi-GPU support
    ASUS Prime B850 Plus does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
    What it is: Shows whether the board can run more than one graphics card in a supported multi-GPU configuration.
    When it matters: When you plan to run more than one graphics card.

    Importance: LOW

    ASUS Prime B850 Plus does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 2 fewer USB 3.2 Gen1 ports
    ASUS Prime B850 Plus 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.
    What it is: The number of rear USB 3.2 Gen1 Type-A ports on the motherboard.
    When it matters: When you want more standard USB ports with faster transfer speeds.

    Importance: MEDIUM

    Good value: >=4

    ASUS Prime B850 Plus 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.2 vs 4
  • More basic audio codec
    ASUS Prime B850 Plus has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
    What it is: The onboard audio codec used by the motherboard.
    When it matters: When sound quality from the built-in audio matters to you.

    Importance: MEDIUM

    ASUS Prime B850 Plus has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.Realtek ALC897 vs Realtek ALC898
  • 2 fewer 3.5mm audio jacks
    ASUS Prime B850 Plus has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
    What it is: The number of rear 3.5mm audio jacks on the motherboard.
    When it matters: When you want more analog audio connection options.

    Importance: LOW

    Good value: >=5

    ASUS Prime B850 Plus 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
  • 1 fewer RGB headers
    ASUS Prime B850 Plus has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
    What it is: The number of 4-pin RGB headers available on the motherboard.
    When it matters: When you want to connect more standard RGB lighting devices.

    Importance: LOW

    Good value: >=2

    ASUS Prime B850 Plus has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.0 vs 1
  • 1 fewer PS/2 ports
    ASUS Prime B850 Plus has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
    What it is: The number of PS/2 ports on the motherboard rear I/O.
    When it matters: When you want support for older keyboards or mice.

    Importance: LOW

    ASUS Prime B850 Plus has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.0 vs 1
  • 1 fewer PCIe x1 slots
    ASUS Prime B850 Plus has fewer PCIe x1 slots than the average motherboard (0 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

    ASUS Prime B850 Plus has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.0 vs 1
  • 61 mm wider
    ASUS Prime B850 Plus is wider than the average motherboard (305 mm vs 244 mm). The average motherboard width is 244 mm.
    What it is: The physical width of the motherboard.
    When it matters: When you check case fit or compare board size.

    Importance: LOW

    ASUS Prime B850 Plus is wider than the average motherboard (305 mm vs 244 mm). The average motherboard width is 244 mm.305 mm vs 244 mm
Total
Expansion
Ports & USB
Audio
Power & Cooling

Graphic comparison of ASUS Prime B850 Plus and

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.7
46 Reviews
amazon
4.6
23 Reviews
amazon
5.0
3 Reviews
United States
Amazon_logo.png
4.7
33 Reviews
Amazon_logo.png
4.6
23 Reviews

(Reviews last updated: May 2026)

What customers like about ASUS Prime B850 Plus?

  • Reliable stability and ease of setup for first-time builders
  • Excellent WiFi 6E performance with near-gigabit wireless speeds
  • EXPO memory profiles work immediately without manual tweaking
  • Efficient VRM cooling that maintains stable temperatures under load
  • Intuitive and well-organized UEFI BIOS interface
  • Accurate and responsive fan control through Q-Fan software
  • Future-proof support for PCIe 5.0 GPUs and multiple M.2 slots

What customers dislike about ASUS Prime B850 Plus?

  • Limited legacy storage options with only four SATA ports
  • Lack of a debug LED makes troubleshooting non-POST issues difficult
  • Only two rear USB 10Gbps ports compared to some competitors
  • BIOS defaults to 'AI' automatic settings that may apply excessive voltage
  • Less granular voltage controls for advanced memory overclocking
  • No integrated I/O shield (on some regional Prime variants)
  • Included M.2 heatsinks are basic and may struggle with high-end Gen 5 drives

Video reviews

Compare ASUS Prime B850 Plus with

VS
VS

Compare