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ASRock B850M Pro RS Review | 107 Data compared

Avg. price in UK:~£110Avg. price in US:~$150CPU socket:AM5Chipset:AMD B850Form factor:microATX

ASRock B850M Pro RS Review: Compare 107 technical specifications and user reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

8.3

Overall score

Score
8.3/ 10
✕
What it is
An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best motherboards on the market.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 82% of models
Score components

90%

8.4

Technical Score

10%

7.9

User score

â–²Better than 82% of motherboards
8.4

Technical Score

Technical score
8.4/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 83% of models
Score components

19%

10

Memory

16%

9.2

Platform & Features

16%

8.2

Storage

15%

9.3

Network

13%

5.7

Ports & USB

8%

7.9

Expansion

8%

8.0

Power & Cooling

5%

5.7

Audio

â–²Better than 83% of motherboards
7.9

User score

User score
7.9/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the motherboard.
When it matters
When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 67% of models
Score components

70%

7.8

User reviews

30%

8.1

Popularity

User score:
United Kingdom
amazon
4.2
(64)
amazon
3.9
(48)
United States
Amazon_logo.png
4.1
(149)
Amazon_logo.png
3.6
(95)

(Reviews last updated: May 2026)

â–¼Worse than 67% of motherboards
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Verdict

The ASRock B850M Pro RS is a Micro-ATX motherboard designed for the AMD AM5 socket, supporting Ryzen 9000, 8000, and 7000 series processors with an 8+2+1 phase power design and Dr.MOS technology. It features four DDR5 DIMM slots supporting speeds up to 8000+ MT/s (OC), one PCIe 5.0 x16 slot, and one 'Blazing' M.2 PCIe Gen5x4 slot alongside two PCIe Gen4x4 slots. Main pros include its cost-effective value, high-speed 2.5GbE LAN, pre-installed I/O shield, and BIOS Flashback support for easy updates. Notable cons include its entry-level Realtek ALC897 audio codec, limited VRM cooling compared to mid-tier boards which may restrict heavy overclocking, and fewer fan headers that might require a separate hub for complex builds.

Technical Specifications of motherboard ASRock B850M Pro RS

Technical Score
Technical score
8.4/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 83% of models
Score components:

19%

10

Memory

16%

9.2

Platform & Features

16%

8.2

Storage

15%

9.3

Network

13%

5.7

Ports & USB

8%

7.9

Expansion

8%

8.0

Power & Cooling

5%

5.7

Audio

8.4
ASRock B850M Pro RS has a technical score of 8.4 points, which is higher than that of 82.8% of products in this category.
User score
User score
7.9/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the motherboard.
When it matters
When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 67% of models
Score components

70%

7.8

User reviews

30%

8.1

Popularity

User score:
United Kingdom
amazon
4.2
(64)
amazon
3.9
(48)
United States
Amazon_logo.png
4.1
(149)
Amazon_logo.png
3.6
(95)

(Reviews last updated: May 2026)

7.9
ASRock B850M Pro RS has a user score of 7.89 points, which is lower than that of 67.3% of products in this category.
Popularity
Popularity
8.1/ 10
✕
What it is
An indicator based on the number of reviews received by the motherboard.
When it matters
When you prefer a motherboard that has already been bought and reviewed by many other users.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 73% of models
Popularity:
ASRock B850M Pro RS has a popularity score of 8.1 points, which is higher than that of 73.2% of products in this category.
8.1
ASRock B850M Pro RS has a popularity score of 8.1 points, which is higher than that of 73.2% of products in this category.
Ratio quality/price
Value for money
8.8/ 10
✕
What it is
An indicator that combines the motherboard's overall rating with its cost.
When it matters
When you are looking for a motherboard that offers a strong balance of features, performance, and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 88% of models
Score components:

60%

8.3

Overall score

40%

9.9

Price

8.8
ASRock B850M Pro RS has a value-for-money score of 8.8 points, which is higher than that of 88.3% of products in this category.
Brand name
Asrock
CPU socket
AM5
CPU socket
AM5
â–² Better than 86% of models
This motherboard 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
AMD
CPU platform
AMD
â–¼ Worse than 68% of models
This motherboard is built for the AMD CPU platform, which is less common than that of 68.5% of motherboards and equal to that of 31.5% of motherboards.
Chipset
AMD B850
Chipset
AMD B850
â–² Better than 89% of models
This motherboard uses the AMD B850 chipset, which is more advanced than that of 89.2% of motherboards and equal to that of 3.9% of motherboards.
Form factor
microATX
Form factor
microATX
â–¼ Worse than 52% of models
This motherboard has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
Show more
DDR memory version
DDR5
DDR memory version
DDR5
â–² Better than 64% of models
This motherboard uses DDR5 memory, which is newer than that of 64.3% of motherboards and equal to that of 35.7% of motherboards.
Memory slots
4
Memory slots
4
â–² Better than 21% of models
Market range: <2 – >4
This motherboard has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
256 GB
Maximum memory capacity
256 GB
â–² Better than 83% of models
Market range: <32 GB – >256 GB
This motherboard supports up to 256 GB of memory, which is more than 82.9% of motherboards and equal to 16.4% of motherboards.
Memory channels
2
Memory channels
2
â–¼ Worse than 7% of models
This motherboard supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.6% of motherboards.
Maximum RAM speed
8,000 MT/s
Maximum RAM speed
8,000 MT/s
â–² Better than 85% of models
Market range: <2k MT/s – >8k MT/s
This motherboard supports memory speeds up to 8,000 MT/s, which is higher than that of 85% of motherboards and equal to that of 5.7% of motherboards.
Show more
N. of M.2 sockets
3
N. of M.2 sockets
3
â–² Better than 65% of models
Market range: <0 – >4
This motherboard has 3 M.2 sockets, which is more than 65.2% of motherboards and equal to 18.8% of motherboards.
M.2 slot interface per slot
1x PCIe 5.0 x4, 2x PCIe 4.0 x4
M.2 slot interface per slot
1x PCIe 5.0 x4, 2x PCIe 4.0 x4
â–² Better than 85% of models
This motherboard offers 1x PCIe 5.0x4, 2x PCIe 4.0x4 for M.2 slot interfaces, which is faster than that of 84.8% of motherboards and equal to that of 3.1% of motherboards.
N. of SATA 3 connectors
4
N. of SATA 3 connectors
4
â–¼ Worse than 48% of models
Market range: <4 – >8
This motherboard has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.2% of motherboards.
Supported RAID levels
0/1/10
Supported RAID levels
0/1/10
â–¼ Worse than 68% of models
This motherboard supports RAID levels 0/1/10, which is narrower than 68.1% of motherboards and equal to 23.3% of motherboards.
NVMe RAID support
yes
NVMe RAID support
yes
â–² Better than 40% of models
This motherboard supports NVMe RAID. 40.3% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
1
N. of PCIe 5.0 x16 slots
1
â–² Better than 69% of models
Market range: <0 – >1
This motherboard 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
1
N. of PCIe 4.0 x16 slots
1
â–² Better than 56% of models
Market range: <0 – >1
This motherboard has 1 PCIe 4.0x16 slots, which is more than 55.5% of motherboards and equal to 35.4% of motherboards.
runs at x4 mode
N. of PCIe 3.0 x16 slots
0
N. of PCIe 3.0 x16 slots
0
â–¼ Worse than 60% of models
Market range: <0 – >3
This motherboard has 0 PCIe 3.0x16 slots, which is fewer than 59.6% of motherboards and equal to 40.4% of motherboards.
runs at x4 mode
PCIe slot electrical configuration
x16/x4
PCIe slot electrical configuration
x16/x4
â–¼ Worse than 50% of models
This motherboard uses x16/x4 for PCIe slot electrical configuration, which is more flexible than that of 42.1% of motherboards and equal to that of 8.2% of motherboards.
Depends on slot/M.2 population.
PCIe bifurcation support
yes
PCIe bifurcation support
yes
â–² Better than 40% of models
This motherboard supports PCIe bifurcation. 40.4% of motherboards support this feature.
x8/x8, x4/x4/x4/x4.
Show more
Total USB ports (rear I/O)
8
Total USB ports (rear I/O)
8
â–² Better than 40% of models
Market range: <6 – >10
This motherboard has 8 USB ports (rear I/O), which is more than 40.2% of motherboards and equal to 30.5% of motherboards.
Total USB ports (including headers)
17
Total USB ports (including headers)
17
â–² Better than 71% of models
Market range: <11 – >19
This motherboard has 17 USB ports (including headers), which is more than 71.3% of motherboards and equal to 10.4% of motherboards.
Total USB-C ports (rear I/O)
1
Total USB-C ports (rear I/O)
1
â–² Better than 35% of models
Market range: <0 – >2
This motherboard has 1 USB-C ports (rear I/O), which is more than 35.5% of motherboards and equal to 48.7% of motherboards.
Total USB-C ports (including headers)
2
Total USB-C ports (including headers)
2
â–² Better than 52% of models
Market range: <0 – >3
This motherboard has 2 USB-C ports (including headers), which is more than 51.7% of motherboards and equal to 32.9% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
N. of USB 3.2 Gen2x2 ports (USB-C)
0
â–¼ Worse than 18% of models
Market range: <0 – >1
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18.3% of motherboards and equal to 81.7% of motherboards.
header only excluded.
Show more
LAN speed
2.5 Gbps
LAN speed
2.5 Gbps
â–² Better than 49% of models
Market range: <1 Gbps – >2.5 Gbps
This motherboard supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.3% of motherboards and equal to that of 41.4% of motherboards.
LAN controller
Realtek RTL8125B
LAN controller
Realtek RTL8125B
â–² Better than 70% of models
This motherboard uses the Realtek RTL8125B LAN controller, which is more advanced than that of 70.4% of motherboards and equal to that of 12.2% of motherboards.
N. of RJ45 ports
1
N. of RJ45 ports
1
â–¼ Worse than 14% of models
Market range: <1 – >2
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
yes
Wi-Fi connectivity
yes
â–² Better than 50% of models
This motherboard supports Wi-Fi connectivity. 50% of motherboards support this feature.
Wi-Fi 6E.
Wi-Fi version
Wi-Fi 6E (802.11ax)
Wi-Fi version
Wi-Fi 6E (802.11ax)
â–² Better than 72% of models
This motherboard 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
Realtek ALC897
Audio codec
Realtek ALC897
â–¼ Worse than 50% of models
This motherboard uses the Realtek ALC897 audio codec, which is less advanced than that of 50.3% of motherboards and equal to that of 29.2% of motherboards.
Nahimic audio.
Audio channels
7.1
Audio channels
7.1
â–² Better than 5% of models
This motherboard offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
0 dB
Audio SNR
0 dB
â–¼ Worse than 99% of models
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 0 dB, which is lower than that of 98.5% of motherboards and equal to that of 1.5% of motherboards.
Headphone amp support
no
Headphone amp support
no
â–¼ Worse than 59% of models
This motherboard does not support a headphone amp. 59.3% of motherboards support this feature.
N. of 3.5mm audio jacks
3
N. of 3.5mm audio jacks
3
â–¼ Worse than 50% of models
Market range: <2 – >6
This motherboard has 3 3.5mm audio jacks, which is fewer than 50.4% of motherboards and equal to 38.1% of motherboards.
Show more
VRM phases
8+2+1
VRM phases
8+2+1
â–¼ Worse than 50% of models
This motherboard has 8+2+1 VRM phases, which is more than 48.1% of motherboards and equal to 2.1% of motherboards.
N. of CPU power connectors
2
N. of CPU power connectors
2
â–² Better than 55% of models
Market range: <1 – >2
This motherboard has 2 CPU power connectors, which is more than 54.6% of motherboards and equal to 45.1% of motherboards.
N. of fan headers
5
N. of fan headers
5
â–¼ Worse than 50% of models
Market range: <3 – >8
This motherboard has 5 fan headers, which is fewer than 50% of motherboards and equal to 14.6% of motherboards.
Pump header
yes
Pump header
yes
â–² Better than 22% of models
This motherboard has a pump header. 21.9% of motherboards include this feature.
Pump header max current
3 A
Pump header max current
3 A
â–² Better than 78% of models
Market range: <0 A – >3 A
This motherboard supports up to 3 A on the pump header, which is higher than that of 77.8% of motherboards and equal to that of 22.1% of motherboards.
Show more

ASRock B850M Pro RS vs the average motherboard

246810TotalPlatform & FeaturesMemoryStorageExpansionPorts & USBNetworkAudioPower & Cooling
  • Newer CPU socket
    CPU socket
    AM5
    â–² Better than 86% of models
    This motherboard has newer CPU socket than the average motherboard (AM5 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM5 vs LGA 1,151
  • 2x more maximum memory capacity
    Maximum memory capacity
    256 GB
    â–² Better than 83% of models
    Market range: <32 GB – >256 GB
    This motherboard 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
    DDR memory version
    DDR5
    â–² Better than 64% of models
    This motherboard 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
    N. of PCIe 5.0 x16 slots
    1
    â–² Better than 69% of models
    Market range: <0 – >1
    This motherboard 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
    N. of M.2 sockets
    3
    â–² Better than 65% of models
    Market range: <0 – >4
    This motherboard has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
    3 vs 2
  • More advanced LAN controller
    LAN controller
    Realtek RTL8125B
    â–² Better than 70% of models
    This motherboard has better LAN controller than the average motherboard (Realtek RTL8125B vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
    Realtek RTL8125B vs Killer + Intel + Realtek
  • 1 more CPU power connectors
    N. of CPU power connectors
    2
    â–² Better than 55% of models
    Market range: <1 – >2
    This motherboard has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
    2 vs 1
  • Integrated I/O shield
    Integrated I/O shield
    yes
    â–² Better than 54% of models
    This motherboard has an integrated I/O shield, while the average motherboard does not. 46% of motherboards include an integrated I/O shield.
  • 18.8% better value for money
    ASRock B850M Pro RS has better value for money than the average motherboard (8.81 vs 7.4).
    8.81 vs 7.41
  • Newer CPU socket
    CPU socket
    AM5
    â–² Better than 86% of models
    This motherboard has newer CPU socket than the average motherboard (AM5 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM5 vs LGA 1,151
  • Integrated I/O shield
    Integrated I/O shield
    yes
    â–² Better than 54% of models
    This motherboard has an integrated I/O shield, while the average motherboard does not. 46% of motherboards include an integrated I/O shield.
  • 4 newer release date
    Release date
    2025
    ★ Better than 90% of models
    Market range: <2k – >2k
    This motherboard has a newer release date than the average motherboard (2025 vs 2021). The average motherboard was released in 2021.
    January 2025
    2025 vs 2021
  • 2x more maximum memory capacity
    Maximum memory capacity
    256 GB
    â–² Better than 83% of models
    Market range: <32 GB – >256 GB
    This motherboard 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
    DDR memory version
    DDR5
    â–² Better than 64% of models
    This motherboard has newer DDR memory generation than the average motherboard (DDR5 vs DDR4). The average motherboard supports DDR4 memory.
    DDR5 vs DDR4
  • 69% higher maximum RAM speed
    Maximum RAM speed
    8,000 MT/s
    â–² Better than 85% of models
    Market range: <2k MT/s – >8k MT/s
    This motherboard has a higher maximum RAM speed than the average motherboard (8000 MT/s vs 4733 MT/s). The average motherboard supports RAM speed of 4733 MT/s.
    8,000 MT/s vs 4,733 MT/s
  • Supports ECC memory
    ECC memory support
    yes
    â–² Better than 79% of models
    This motherboard supports ECC memory, while the average motherboard does not. 21% of motherboards support ECC memory.
    ECC requires compatible CPU.
  • 62.2% higher overclocked RAM speed
    Maximum overclocked RAM speed
    8,000 MT/s
    â–² Better than 81% of models
    Market range: <2.7k MT/s – >8.2k MT/s
    This motherboard has a higher overclocked RAM speed than the average motherboard (8000 MT/s vs 4933 MT/s). The average motherboard supports overclocked RAM speed of 4933 MT/s.
    8,000 MT/s vs 4,933 MT/s
  • 1 more M.2 sockets
    N. of M.2 sockets
    3
    â–² Better than 65% of models
    Market range: <0 – >4
    This motherboard has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
    3 vs 2
  • 1 more PCIe 5.0x16 slots
    N. of PCIe 5.0 x16 slots
    1
    â–² Better than 69% of models
    Market range: <0 – >1
    This motherboard 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 PCIe 4.0x16 slots
    N. of PCIe 4.0 x16 slots
    1
    â–² Better than 56% of models
    Market range: <0 – >1
    This motherboard has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    runs at x4 mode
    1 vs 0
  • 1 more PCIe x4 slots
    N. of PCIe x4 slots
    1
    â–² Better than 73% of models
    Market range: <0 – >1
    This motherboard has more PCIe x4 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe x4 slot/s.
    1 vs 0
  • 1 more USB 3.2 Gen2 USB-C ports
    N. of USB 3.2 Gen2 ports (USB-C)
    1
    â–² Better than 65% of models
    Market range: <0 – >1
    This motherboard has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
    1 vs 0
  • 1 more USB 3.2 Gen1 headers
    N. of USB 3.2 Gen1 headers (USB-A)
    2
    â–² Better than 68% of models
    Market range: <1 – >2
    This motherboard 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.
    supports 4 ports total
    2 vs 1
  • 2 more total USB connections
    Total USB ports (including headers)
    17
    â–² Better than 71% of models
    Market range: <11 – >19
    This motherboard has more total USB connections than the average motherboard (17 vs 15). The average motherboard has 15 total USB connections.
    17 vs 15
  • 1 more total USB-C connections
    Total USB-C ports (including headers)
    2
    â–² Better than 52% of models
    Market range: <0 – >3
    This motherboard has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
    2 vs 1
  • 2 more USB 2.0 ports
    N. of USB 2.0 ports
    4
    â–² Better than 66% of models
    Market range: <0 – >4
    This motherboard has more USB 2.0 ports than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 port/s.
    4 vs 2
  • More advanced LAN controller
    LAN controller
    Realtek RTL8125B
    â–² Better than 70% of models
    This motherboard has better LAN controller than the average motherboard (Realtek RTL8125B vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
    Realtek RTL8125B vs Killer + Intel + Realtek
  • Newer Wi-Fi standard
    Wi-Fi version
    Wi-Fi 6E (802.11ax)
    â–² Better than 72% of models
    This motherboard has newer Wi-Fi standard than the average motherboard (Wi-Fi 6E (802.11ax) vs Wi-Fi 5 (802.11ac)). The average motherboard supports Wi-Fi 5 (802.11ac) Wi-Fi.
    Wi-Fi 6E (802.11ax) vs Wi-Fi 5 (802.11ac)
  • Supports Bluetooth
    Bluetooth connectivity
    yes
    â–² Better than 51% of models
    This motherboard supports Bluetooth, while the average motherboard does not. 48.9% of motherboards support Bluetooth.
  • 1 more CPU power connectors
    N. of CPU power connectors
    2
    â–² Better than 55% of models
    Market range: <1 – >2
    This motherboard has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
    2 vs 1
  • 1 more ARGB headers
    N. of ARGB headers (3-pin)
    3
    â–² Better than 76% of models
    Market range: <0 – >3
    This motherboard has more ARGB headers than the average motherboard (3 vs 2). The average motherboard has 2 ARGB header/s.
    3 vs 2
  • 61 mm shorter
    Height
    244 mm
    â–² Better than 62% of models
    Market range: <170 mm – >320 mm
    This motherboard is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    244 mm vs 305 mm
  • 1 A higher pump header current limit
    Pump header max current
    3 A
    â–² Better than 78% of models
    Market range: <0 A – >3 A
    This motherboard 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.
    3 A vs 2 A
  • 115 dB lower audio SNR
    Audio SNR
    0 dB
    â–¼ Worse than 99% of models
    Market range: <95 dB – >120 dB
    This motherboard has a lower audio SNR than the average motherboard (0 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    0 dB vs 115 dB
  • Fewer RAID options
    Supported RAID levels
    0/1/10
    â–¼ Worse than 68% of models
    This motherboard has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    0/1/10 vs 0/1/5/10
  • 2 fewer USB 3.2 Gen1 ports
    N. of USB 3.2 Gen1 ports (USB-A)
    2
    â–¼ Worse than 60% of models
    Market range: <0 – >6
    This motherboard 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
  • No multi-GPU support
    Multi-GPU support
    no
    â–¼ Worse than 55% of models
    This motherboard does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • No headphone amp support
    Headphone amp support
    no
    â–¼ Worse than 59% of models
    This motherboard does not support a headphone amp, while the average motherboard does. 59.2% of motherboards support a headphone amp.
  • 2 fewer 3.5mm audio jacks
    N. of 3.5mm audio jacks
    3
    â–¼ Worse than 50% of models
    Market range: <2 – >6
    This motherboard has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
    3 vs 5
  • Less flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4
    â–¼ Worse than 50% of models
    This motherboard has less flexible PCIe lane configuration than the average motherboard (x16/x4 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    Depends on slot/M.2 population.
    x16/x4 vs x16/x0/x4, x8/x8/x4
  • Fewer useful accessories
    Included accessories
    SATA cables, M.2 kit
    â–¼ Worse than 92% of models
    This motherboard has fewer useful accessories than the average motherboard (SATA cables, M.2 kit vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable). The average motherboard comes with 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable.
    SATA cables, M.2 kit vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable
  • Fewer useful accessories
    Included accessories
    SATA cables, M.2 kit
    â–¼ Worse than 92% of models
    This motherboard has fewer useful accessories than the average motherboard (SATA cables, M.2 kit vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable). The average motherboard comes with 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable.
    SATA cables, M.2 kit vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable
  • Older CPU platform
    CPU platform
    AMD
    â–¼ Worse than 68% of models
    This motherboard uses the AMD CPU platform compared to Intel on the average motherboard. The average motherboard uses Intel CPU platform.
    AMD vs Intel
  • Less versatile form factor
    Form factor
    microATX
    â–¼ Worse than 52% of models
    This motherboard has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
    microATX vs ATX
  • Fewer RAID options
    Supported RAID levels
    0/1/10
    â–¼ Worse than 68% of models
    This motherboard has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    0/1/10 vs 0/1/5/10
  • No multi-GPU support
    Multi-GPU support
    no
    â–¼ Worse than 55% of models
    This motherboard does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • Less flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4
    â–¼ Worse than 50% of models
    This motherboard has less flexible PCIe lane configuration than the average motherboard (x16/x4 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    Depends on slot/M.2 population.
    x16/x4 vs x16/x0/x4, x8/x8/x4
  • 1 fewer PCIe x1 slots
    N. of PCIe x1 slots
    0
    â–¼ Worse than 69% of models
    Market range: <0 – >3
    This motherboard has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    0 vs 1
  • 1 fewer PCIe 3.0x16 slots
    N. of PCIe 3.0 x16 slots
    0
    â–¼ Worse than 60% of models
    Market range: <0 – >3
    This motherboard has fewer PCIe 3.0x16 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
    runs at x4 mode
    0 vs 1
  • 2 fewer USB 3.2 Gen1 ports
    N. of USB 3.2 Gen1 ports (USB-A)
    2
    â–¼ Worse than 60% of models
    Market range: <0 – >6
    This motherboard 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
  • 1 fewer PS/2 ports
    N. of PS/2 ports
    0
    â–¼ Worse than 59% of models
    Market range: <0 – >1
    This motherboard has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
    0 vs 1
  • 115 dB lower audio SNR
    Audio SNR
    0 dB
    â–¼ Worse than 99% of models
    Market range: <95 dB – >120 dB
    This motherboard has a lower audio SNR than the average motherboard (0 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    0 dB vs 115 dB
  • No headphone amp support
    Headphone amp support
    no
    â–¼ Worse than 59% of models
    This motherboard does not support a headphone amp, while the average motherboard does. 59.2% of motherboards support a headphone amp.
  • 2 fewer 3.5mm audio jacks
    N. of 3.5mm audio jacks
    3
    â–¼ Worse than 50% of models
    Market range: <2 – >6
    This motherboard has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
    3 vs 5
  • No optical S/PDIF out
    Optical S/PDIF out (TOSLINK)
    no
    â–¼ Worse than 56% of models
    This motherboard does not have optical S/PDIF out, while the average motherboard does. 55.8% of motherboards include optical S/PDIF out.
  • 0.5 fewer fan headers
    N. of fan headers
    5
    â–¼ Worse than 50% of models
    Market range: <3 – >8
    This motherboard has fewer fan headers than the average motherboard (5 vs 5.5). The average motherboard has 5.5 fan header/s.
    5 vs 5.5

Graphic comparison of ASRock B850M Pro RS and other products in the Motherboards category

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Third-party reviews

United Kingdom
amazon
4.2
64 Reviews
amazon
3.9
48 Reviews
United States
Amazon_logo.png
4.1
149 Reviews
Amazon_logo.png
3.6
95 Reviews

(Reviews last updated: May 2026)

What customers like about ASRock B850M Pro RS?

  • Affordable price point for a B850 chipset motherboard
  • Supports PCIe 5.0 for future-proofing storage and graphics
  • Provides multiple M.2 slots (up to three) for high-speed SSDs
  • Includes modern connectivity like 2.5Gb/s LAN and Wi-Fi 6E (on WiFi models)
  • BIOS is generally reported as easy to navigate and update
  • Good overall feature set for budget-conscious AM5 builds

What customers dislike about ASRock B850M Pro RS?

  • Reports of 'hit or miss' reliability, including boards failing after short use
  • Common complaints regarding long memory training times and slow boot speeds
  • Some users experienced issues with USB devices losing signal or disconnecting
  • Cooling performance for the chipset and MOSFETs may be insufficient for heavy overclocking
  • Potential for faulty Wi-Fi chips that only detect after a warm reboot
  • Limited M.2 heatsinks (often only one provided, requiring separate purchases for others)

Video reviews

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

Compare ASRock B850M Pro RS with other products in the Motherboards category

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