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ASRock B850 Pro RS Review | 107 Data compared

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  • Avg. price in UK: ~£130
  • Avg. price in US: ~$150
  • CPU socket: AM5
  • Chipset: AMD B850
  • Form factor: ATX

ASRock B850 Pro RS review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

8.4

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%

8.5

Technical Score

10.0%

7.8

User score

Excellent
8.5

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

10

Memory

16.0%

8.8

Platform & Features

16.0%

8.8

Storage

15.0%

8.1

Network

13.0%

6.9

Ports & USB

8.0%

6.6

Expansion

8.0%

8.9

Power & Cooling

5.0%

8.0

Audio

Excellent
7.8

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%

7.8

User reviews

30.0%

7.9

Popularity

User score:
United Kingdom
amazon
4.0
(82)
amazon
4.0
(43)
United States
Amazon_logo.png
4.1
(149)
Amazon_logo.png
3.6
(95)

(Reviews last updated: May 2026)

Very good
  • 9.3
    Gaming

    Score components:

    28.0%

    7.7

    VRM phases

    22.0%

    10

    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

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Best rankings

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

Verdict

The ASRock B850 Pro RS is an ATX motherboard designed for the AMD AM5 socket, supporting Ryzen 9000, 8000, and 7000 series processors. Key specifications include a robust 14+2+1 power phase design with 80A Dr.MOS, four DDR5 DIMM slots supporting speeds over 8000MT/s (OC), and a high-speed storage suite featuring one PCIe 5.0 Blazing M.2 slot alongside three additional M.2 slots (two Gen4, one Gen3). Its main pros are the inclusion of PCIe 5.0 support for both the primary graphics slot and top M.2 drive, 2.5G LAN, a pre-installed I/O shield, and highly competitive value for a mid-range board. However, cons include the use of the older Realtek ALC897 audio codec and the lack of integrated Wi-Fi on the standard model, which requires the 'WiFi' variant or a separate card.

Technical Specifications of ASRock B850 Pro RS

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

10

Memory

16.0%

8.8

Platform & Features

16.0%

8.8

Storage

15.0%

8.1

Network

13.0%

6.9

Ports & USB

8.0%

6.6

Expansion

8.0%

8.9

Power & Cooling

5.0%

8.0

Audio

8.5
ASRock B850 Pro RS has a technical score of 8.47 points, which is higher than that of 89.3% 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%

7.8

User reviews

30.0%

7.9

Popularity

User score:
United Kingdom
amazon
4.0
(82)
amazon
4.0
(43)
United States
Amazon_logo.png
4.1
(149)
Amazon_logo.png
3.6
(95)

(Reviews last updated: May 2026)

7.8
ASRock B850 Pro RS has a user score of 7.85 points, which is lower than that of 55.8% 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.
7.9
ASRock B850 Pro RS has a popularity of 7.9 points, which is higher than 73.2% 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%

8.4

Overall score

40.0%

9.8

Price

8.8
ASRock B850 Pro RS 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

Asrock
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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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.
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N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

4
ASRock B850 Pro RS has 4 M.2 sockets, which is more than 84% of motherboards and equal to 10.7% 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, 2x PCIe 4.0 x4, 1x PCIe 3.0 x4/SATA
ASRock B850 Pro RS offers 1x PCIe 5.0x4, 2x PCIe 4.0x4, 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is faster than that of 91.4% of motherboards.
Key E Wi-Fi slot excluded.
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
ASRock B850 Pro RS 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

0/1/10
ASRock B850 Pro RS supports RAID levels 0/1/10, which is narrower than 68.3% of motherboards and equal to 23.2% of motherboards.
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: LOW

yes
ASRock B850 Pro RS supports NVMe RAID. 40.3% of motherboards support this feature.
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N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: HIGH

Good value: >=1

1
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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

0
ASRock B850 Pro RS has 0 PCIe 3.0x16 slots, which is fewer than 59.5% of motherboards and equal to 40.5% of motherboards.
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

?
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
ASRock B850 Pro RS supports PCIe bifurcation. 39.1% of motherboards support this feature.
x8/x8, x8/x4/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

12
ASRock B850 Pro RS has 12 USB ports (rear I/O), which is more than 93% of motherboards and equal to 5.5% 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

21
ASRock B850 Pro RS has 21 USB ports (including headers), which is more than 95% of motherboards and equal to 2.7% 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

2
ASRock B850 Pro RS has 2 USB-C ports (rear I/O), which is more than 84.3% of motherboards and equal to 12.3% 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

3
ASRock B850 Pro RS has 3 USB-C ports (including headers), which is more than 84.6% of motherboards and equal to 11.1% of motherboards.
includes internal USB-C header.
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
ASRock B850 Pro RS has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
header only excluded.
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LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

2.5 Gbps
ASRock B850 Pro RS 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

Realtek RTL8125B
ASRock B850 Pro RS uses the Realtek RTL8125B LAN controller, which is more advanced than that of 58.2% of motherboards and equal to that of 17.3% of motherboards.
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: LOW

1
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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)

N/A
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
ASRock B850 Pro RS 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
ASRock B850 Pro RS offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: MEDIUM

Good value: >=120 dB

?
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

yes
ASRock B850 Pro RS 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
ASRock B850 Pro RS 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

14+2+1
ASRock B850 Pro RS has 14+2+1 VRM phases, which is more than 81.9% of motherboards and equal to 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
ASRock B850 Pro RS 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

7
ASRock B850 Pro RS has 7 fan headers, which is more than 72.7% of motherboards and equal to 9.5% 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
ASRock B850 Pro RS 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

3 A
ASRock B850 Pro RS supports up to 3 A on the pump header, which is higher than that of 76.7% of motherboards and equal to that of 23.2% of motherboards.
Show more

ASRock B850 Pro RS vs the average motherboard

  • 2 more M.2 sockets
    ASRock B850 Pro RS has more M.2 sockets than the average motherboard (4 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

    ASRock B850 Pro RS has more M.2 sockets than the average motherboard (4 vs 2). The average motherboard has 2 M.2 socket/s.4 vs 2
  • Newer CPU socket
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS 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
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS 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
  • 4 more rear USB ports
    ASRock B850 Pro RS has more rear USB ports than the average motherboard (12 vs 8). The average motherboard has 8 rear USB port/s.
    What it is: The total number of rear USB ports available on the motherboard.
    When it matters: When you use many USB devices directly from the back of the PC.

    Importance: MEDIUM

    Good value: >=8

    ASRock B850 Pro RS has more rear USB ports than the average motherboard (12 vs 8). The average motherboard has 8 rear USB port/s.12 vs 8
  • Newer DDR memory generation
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.DDR5 vs DDR4
  • 1 more PCIe 5.0x16 slots
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS 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
  • 6 more total USB connections
    ASRock B850 Pro RS has more total USB connections than the average motherboard (21 vs 15). The average motherboard has 15 total USB connections.
    What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
    When it matters: When you want to know the board's full USB expansion potential.

    Importance: MEDIUM

    Good value: >=14

    ASRock B850 Pro RS has more total USB connections than the average motherboard (21 vs 15). The average motherboard has 15 total USB connections.21 vs 15
  • 1 more rear USB-C ports
    ASRock B850 Pro RS has more rear USB-C ports than the average motherboard (2 vs 1). The average motherboard has 1 rear USB-C port/s.
    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

    ASRock B850 Pro RS has more rear USB-C ports than the average motherboard (2 vs 1). The average motherboard has 1 rear USB-C port/s.2 vs 1
  • Newer CPU socket
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS has an integrated I/O shield, while the average motherboard does not. 46.1% of motherboards include an integrated I/O shield.
  • 4 newer release date
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
  • 73.9% higher maximum RAM speed
    ASRock B850 Pro RS 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.
  • Supports ECC memory
    ASRock B850 Pro RS supports ECC memory, while the average motherboard does not. 20.9% of motherboards support ECC memory.
  • 62.2% higher overclocked RAM speed
    ASRock B850 Pro RS 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.
  • 2 more M.2 sockets
    ASRock B850 Pro RS has more M.2 sockets than the average motherboard (4 vs 2). The average motherboard has 2 M.2 socket/s.
  • 1 more PCIe 5.0x16 slots
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 4 more rear USB ports
    ASRock B850 Pro RS has more rear USB ports than the average motherboard (12 vs 8). The average motherboard has 8 rear USB port/s.
  • 6 more total USB connections
    ASRock B850 Pro RS has more total USB connections than the average motherboard (21 vs 15). The average motherboard has 15 total USB connections.
  • 1 more rear USB-C ports
    ASRock B850 Pro RS has more rear USB-C ports than the average motherboard (2 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 1 more USB 3.2 Gen2 USB-C ports
    ASRock B850 Pro RS has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
  • 1 more USB 3.2 Gen1 headers
    ASRock B850 Pro RS has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.
  • 1 more USB 3.2 Gen1 USB-C ports
    ASRock B850 Pro RS has more USB 3.2 Gen1 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen1 USB-C port/s.
  • 2 more total USB-C connections
    ASRock B850 Pro RS has more total USB-C connections than the average motherboard (3 vs 1). The average motherboard has 1 total USB-C connections.
  • 1 more USB 3.2 Gen2 headers
    ASRock B850 Pro RS has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.
  • 1 more USB 3.2 Gen2x2 headers
    ASRock B850 Pro RS has more USB 3.2 Gen2x2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2x2 header/s.
  • 4 more USB 2.0 ports
    ASRock B850 Pro RS has more USB 2.0 ports than the average motherboard (6 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • Supports Wi-Fi
    ASRock B850 Pro RS supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • 1 more CPU power connectors
    ASRock B850 Pro RS has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
  • More VRM phases
    ASRock B850 Pro RS has more VRM phases than the average motherboard (14+2+1 vs 10). The average motherboard has 10 VRM phase/s.
  • 2 more fan headers
    ASRock B850 Pro RS has more fan headers than the average motherboard (7 vs 5). The average motherboard has 5 fan header/s.
  • 1 more ARGB headers
    ASRock B850 Pro RS has more ARGB headers than the average motherboard (3 vs 2). The average motherboard has 2 ARGB header/s.
  • 1 A higher pump header current limit
    ASRock B850 Pro RS has a higher pump header current than the average motherboard (3 A vs 2 A). The average motherboard provides pump header current of 2 A.

Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Power & Cooling
  • Fewer RAID options
    ASRock B850 Pro RS has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
  • No multi-GPU support
    ASRock B850 Pro RS does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 1 fewer PCIe x1 slots
    ASRock B850 Pro RS has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 fewer PCIe 3.0x16 slots
    ASRock B850 Pro RS has fewer PCIe 3.0x16 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
  • 1 fewer USB 3.2 Gen2 ports
    ASRock B850 Pro RS 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.
  • 1 fewer DisplayPort outputs
    ASRock B850 Pro RS has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • More basic LAN controller
    ASRock B850 Pro RS has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C LAN controller.
  • Older Bluetooth version
    ASRock B850 Pro RS has older Bluetooth version than the average motherboard (5.2 vs 5.4). The average motherboard supports Bluetooth 5.4.
  • More basic audio codec
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS 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
    ASRock B850 Pro RS does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • 61 mm wider
    ASRock B850 Pro RS is wider than the average motherboard (305 mm vs 244 mm). The average motherboard width is 244 mm.
  • More basic LAN controller
    ASRock B850 Pro RS has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C 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

    ASRock B850 Pro RS has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C LAN controller.Realtek RTL8125B vs Marvell AQtion AQC113C
  • Fewer RAID options
    ASRock B850 Pro RS has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    What it is: The RAID modes officially supported by the motherboard storage platform.
    When it matters: When you plan to use multiple drives in a RAID setup.

    Importance: MEDIUM

    ASRock B850 Pro RS 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
  • 1 fewer USB 3.2 Gen2 ports
    ASRock B850 Pro RS 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.
    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

    ASRock B850 Pro RS 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
  • No multi-GPU support
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • More basic audio codec
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS 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
  • 1 fewer DisplayPort outputs
    ASRock B850 Pro RS has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
    What it is: The number of DisplayPort video outputs on the motherboard.
    When it matters: When you want to connect compatible displays through the rear I/O.

    Importance: MEDIUM

    Good value: >=1

    ASRock B850 Pro RS has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.0 vs 1
  • 2 fewer 3.5mm audio jacks
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS 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 PCIe x1 slots
    ASRock B850 Pro RS 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

    ASRock B850 Pro RS has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.0 vs 1
Total
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

Graphic comparison of ASRock B850 Pro RS and

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Third-party reviews

United Kingdom
amazon
4.0
82 Reviews
amazon
4.0
43 Reviews
United States
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4.1
149 Reviews
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3.6
95 Reviews

(Reviews last updated: May 2026)

What customers like about ASRock B850 Pro RS?

  • Excellent value for a mid-range B850 motherboard, often priced competitively around $150-$170.
  • Strong storage expansion with four M.2 NVMe slots, including one PCIe Gen 5.0 slot.
  • Generous rear I/O connectivity featuring up to 10-12 USB ports, including USB 3.2 Gen2x2 Type-C.
  • Robust 14+2+1 power phase design (Dr.MOS) capable of handling high-end CPUs like the Ryzen 9 9950X.
  • Includes helpful DIY features such as a BIOS Flashback button and adjustable integrated I/O shield.
  • High-quality 8-layer PCB design which aids in thermal management and signal stability for memory overclocking.

What customers dislike about ASRock B850 Pro RS?

  • Significant reliability concerns reported by users regarding AM5 CPU failures (specifically 9000-series and X3D models) on ASRock boards.
  • Stock cooling on the VRMs and chipset can underperform under heavy, sustained workloads compared to competitors.
  • Limited to Wi-Fi 6E (on WiFi models) rather than the newer Wi-Fi 7 standard found on some other B850 boards.
  • Uses the older Realtek ALC897 audio codec, which is considered inferior to higher-end solutions like the ALC1220.
  • Only the primary M.2 slot typically includes a heatsink, requiring users to purchase separate cooling for additional drives.
  • Software stability issues, particularly with the Polychrome RGB lighting control app.

Video reviews

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