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ASRock B850M Pro-A Motherboard Micro ATX with AMD AM5 Socket
Motherboards

ASRock B850M Pro-A Motherboard Micro ATX with AMD AM5 Socket

Key features:

  • 4 DDR5 Ram slots up to 8000+(OC)
  • Ryzen Zen 4/5 processors
  • Support for PCI Express 5.0 x16
  • DisplayPort, HDMI connection
  • Slots for 4x Sata III and 3x M.2
  • 3x USB 3.2, 4x USB 2.0
See full description

  • Socket

    The processor socket type.

    The processor we choose should have the same socket in order to fit into the motherboard.

    In addition to the socket, the motherboard chipset must also be supported by the processor.

  • Size

    The size of the motherboard is expressed with a code name (standard).
    2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

    Micro ATX

    Smaller than ATX, with fewer slots but sufficient for everyday use.

  • Usage

    Desktop

    Motherboards designed for use in desktop computers.

  • Chipset

    The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

    The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

    If the motherboard chipset is supported by the processor, then the socket will also be compatible.

     

  • Memory

    Memory Type and RAM Slots

    Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.
  • See all
Product report

Description

Description

The ASRock B850M Pro-A is a Micro ATX motherboard with an AMD AM5 socket, compatible with Ryzen Series 9000, 8000, and 7000 processors. The Pro-A series is designed for enhanced stability, durability, and efficiency, offering reliable performance, user-friendly features, and a sleek aesthetic, making it ideal for everyday computing needs. It also offers support for technologies such as PCIe 5.0, which allows the connection of the most modern graphics cards and other peripheral devices with high data transfer speeds.

Optimized VRM Design

  • 8+2+1 Power Phase Design Features durable components and completely smooth power delivery to the processor. Additionally, it offers unparalleled overclocking capabilities and improved performance with the lowest temperature, ideal for gamers.
  • Dr. MOS Dr.MOS is the integrated power solution designed for variable voltage applications. Compared to traditional discrete MOSFETs, Dr.MOS delivers higher current more intelligently to each phase, thus offering improved thermal performance results and superior overall performance.

DDR5 EXPO Support

Allows easy RAM upgrade with optimized settings for increased performance. By enabling EXPO profiles, you can ensure that the memory operates at the best possible speeds and stability, improving system performance for demanding applications and gaming.

PCIe Gen5 Blazing M.2

The Blazing M.2 supports the latest PCI Express 5.0 standard, offering double the bandwidth compared to the previous generation. With an impressive transfer speed of 128Gb/s, it is ready to unlock the full potential of future ultra-fast SSDs.

Smart Cooling Design

The first thing that catches the eye is the optimized design of the aluminum heatsink. Heatsinks are critical for efficient heat dissipation, especially during heavy workloads, such as gaming or productivity tasks. The motherboard built with heatsinks can effectively manage heat performance, thus ensuring system stability and longevity effortlessly.

Support for PWM/DC fans

Automatically detects whether the fans are operating in DC or PWM mode, allowing users to precisely adjust fan speed and achieve quieter operation.

① CPU Fan Connector  ② Chassis Fan Connectors

Dragon 2.5 Gb/s LAN

The intelligent 2.5Gb/s LAN platform is designed for maximum network performance, meeting the demanding needs of home networks, content creators, online gamers, and high-quality streaming services. It boosts network performance up to 2.5 times the bandwidth compared to standard gigabit Ethernet, offering a faster and uninterrupted connectivity experience for gaming, file transfers, and backups.

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Product Details

Size
Micro ATX

Size

The size of the motherboard is expressed with a code name (standard).
2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

Micro ATX
Smaller than ATX, with fewer slots but sufficient for everyday use.
Type
Desktop

Type

Desktop

Motherboards designed for use in desktop computers.

Processor

Supported Processors
AMD
Models
Ryzen
Supported CPU Generation
Zen 5
Socket
AM5

Socket

The processor socket type.

The processor we choose should have the same socket in order to fit into the motherboard.

In addition to the socket, the motherboard chipset must also be supported by the processor.

Chipset

Model
AMD B850

Model

The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

If the motherboard chipset is supported by the processor, then the socket will also be compatible.

 

Memory

Memory type
DDR5

Memory type

The type of RAM memory that is compatible with the motherboard.

DDR5

The latest memory type, with speed starting from 4000 MT/s.
Quantity
4 DIMM Slots
Memory Speeds
8000OC

Memory Speeds

The supported RAM memory speeds.

The RAM and processor that will be installed in the computer should be able to reach these speeds, while special settings may be required to reach maximum speeds.
Memory Channels
Dual Channel

Memory Channels

Dual Channel

It is possible to install two identical RAM modules that will work in parallel and provide more speed to applications that require a lot of memory (e.g. video editing). 2. For example, if two identical 8GB RAM modules are installed in a dual channel motherboard, they will perform better than installing one 16GB module.

Internal Connectors

PCI Express x16 5.0
1 Slot

PCI Express x16 5.0

The available PCI Express x16 5.0 expansion card slots of the motherboard.
SATA III 6Gb/s
4 Port

SATA III 6Gb/s

Modern hard drive connection standard.

Most SSD hard drives require this standard to perform at their maximum potential.
M.2 Type
1 PCIe 5.0 Port, 2 PCIe 4.0 Ports

M.2 Type

The number and type of available slots for installing M.2 SSD units.
M.2 Slots
0

External Connectors

Rear USB-A outputs
3 USB 3.2 Ports, 4 USB 2.0 Ports
Rear USB-C outputs
1 USB 3.2 Port
Ethernet (LAN)
1

Ethernet (LAN)

The number of ethernet ports for wired connection to a network that the motherboard has on its back panel.
Screen Connections
DisplayPort, HDMI

Specifications

RGB Lighting
No
WiFi/Bluetooth
No
Extra
Bios Flashback, RGB Header

Extra

Bios Flashback

Ability to update the BIOS without requiring a CPU and RAM installed on the motherboard. This advanced feature is intended for experienced users and is useful for supporting newer processors on older motherboards. Please refer to the manufacturer's instructions for the process, as it may vary between manufacturers.

For example, if you want to install a Ryzen 5000 series processor on a chipset that only supports it after a BIOS upgrade, BIOS Flashback can be used without having an older processor on the motherboard.

RGB Header
Special connector for connecting LED strips or connecting other parts with RGB that require separate power supply.

Sound

Sound Card Channels
7.1
Additional Audio Connections
-

Top Specs

Memory
4x DDR5

Memory

Memory Type and RAM Slots

Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (5)

Reviews

4.4
5
4.4
Review this product
  1. 4
  2. 4 stars
    0
  3. 3 stars
    0
  4. 1
  5. 1 star
    0
Review this product
  • Number of ports
  • Number of BIOS functions
  • Easy hardware connection to the motherboard
  • Easy installation in the case
  • Temperature
  • VagosTech
    5
    2 out of 2 members found this review helpful
    VagosTech
    Expert Creator

    Verified purchase

    The most VFM motherboard with these features. Of course, do a BIOS update as soon as you get it because it has some significant issues without the latest BIOS version.

    Translated from Greek ·
    • Number of ports
    • Number of BIOS functions
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
    Did you find this review helpful?
  • nikoslion2001
    2
    4 out of 6 members found this review helpful
    nikoslion2001

    GREAT ATTENTION!
    Anyone who already has the motherboard should urgently do a BIOS update.
    https://www.insomnia.gr/articles/hardware/amd/i-amd-apanta-sta-provlimata-katastrofis-ypodochon-am5/

    and on the asrock subreddit:
    https://www.reddit.com/r/ASRock/comments/1mvgndh/9000series_cpu_failuresdeaths_megathread_2/

    Personally, it burned my Ryzen 7900 within 10 days after purchase. I got a refund for both the motherboard and the processor (purchase via Skroutz).
    This applies only to the new series specifically on AM5. On AM4 I used only Asrock for years in all builds without any issue.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Matina_Xydi

    Verified purchase

  • 5
    Vassilis_Asimakis

    Verified purchase

  • 5
    KonstantinosSon

    Verified purchase

  • VagosTech
    5
    VagosTech

    The most VFM motherboard with these features. Of course, do a BIOS update as soon as you get it because it has some significant issues without the latest BIOS version.

    Translated from Greek ·
    2
  • nikoslion2001
    2
    nikoslion2001

    GREAT ATTENTION!
    Anyone who already has the motherboard should urgently do a BIOS update.
    https://www.insomnia.gr/articles/hardware/amd/i-amd-apanta-sta-provlimata-katastrofis-ypodochon-am5/

    and on the asrock subreddit:
    https://www.reddit.com/r/ASRock/comments/1mvgndh/9000series_cpu_failuresdeaths_megathread_2/

    Personally, it burned my Ryzen 7900 within 10 days after purchase. I got a refund for both the motherboard and the processor (purchase via Skroutz).
    This applies only to the new series specifically on AM5. On AM4 I used only Asrock for years in all builds without any issue.

    Translated from Greek ·
    4
  • 5
    Matina_Xydi

    0
  • 5
    Vassilis_Asimakis

    0
  • 5
    KonstantinosSon

    0
  • See all

Description & Specifications

Product Details

Size
Micro ATX

Size

The size of the motherboard is expressed with a code name (standard).
2. We make sure that the computer case in which the motherboard will be installed supports the corresponding standard in order to fit it.

Micro ATX
Smaller than ATX, with fewer slots but sufficient for everyday use.
Type
Desktop

Type

Desktop

Motherboards designed for use in desktop computers.

Processor

Supported Processors
AMD
Models
Ryzen
Supported CPU Generation
Zen 5
Socket
AM5

Socket

The processor socket type.

The processor we choose should have the same socket in order to fit into the motherboard.

In addition to the socket, the motherboard chipset must also be supported by the processor.

Chipset

Model
AMD B850

Model

The motherboard chip that manages connections with motherboard components (e.g. CPU, RAM memory, hard disk, USB ports).

The processor we choose must support the motherboard chipset in order to be 100% compatible with each other and to fully utilize the motherboard connections.

If the motherboard chipset is supported by the processor, then the socket will also be compatible.

 

Memory

Memory type
DDR5

Memory type

The type of RAM memory that is compatible with the motherboard.

DDR5

The latest memory type, with speed starting from 4000 MT/s.
Quantity
4 DIMM Slots
Memory Speeds
8000OC

Memory Speeds

The supported RAM memory speeds.

The RAM and processor that will be installed in the computer should be able to reach these speeds, while special settings may be required to reach maximum speeds.
Memory Channels
Dual Channel

Memory Channels

Dual Channel

It is possible to install two identical RAM modules that will work in parallel and provide more speed to applications that require a lot of memory (e.g. video editing). 2. For example, if two identical 8GB RAM modules are installed in a dual channel motherboard, they will perform better than installing one 16GB module.

Internal Connectors

PCI Express x16 5.0
1 Slot

PCI Express x16 5.0

The available PCI Express x16 5.0 expansion card slots of the motherboard.
SATA III 6Gb/s
4 Port

SATA III 6Gb/s

Modern hard drive connection standard.

Most SSD hard drives require this standard to perform at their maximum potential.
M.2 Type
1 PCIe 5.0 Port, 2 PCIe 4.0 Ports

M.2 Type

The number and type of available slots for installing M.2 SSD units.
M.2 Slots
0

External Connectors

Rear USB-A outputs
3 USB 3.2 Ports, 4 USB 2.0 Ports
Rear USB-C outputs
1 USB 3.2 Port
Ethernet (LAN)
1

Ethernet (LAN)

The number of ethernet ports for wired connection to a network that the motherboard has on its back panel.
Screen Connections
DisplayPort, HDMI

Specifications

RGB Lighting
No
WiFi/Bluetooth
No
Extra
Bios Flashback, RGB Header

Extra

Bios Flashback

Ability to update the BIOS without requiring a CPU and RAM installed on the motherboard. This advanced feature is intended for experienced users and is useful for supporting newer processors on older motherboards. Please refer to the manufacturer's instructions for the process, as it may vary between manufacturers.

For example, if you want to install a Ryzen 5000 series processor on a chipset that only supports it after a BIOS upgrade, BIOS Flashback can be used without having an older processor on the motherboard.

RGB Header
Special connector for connecting LED strips or connecting other parts with RGB that require separate power supply.

Sound

Sound Card Channels
7.1
Additional Audio Connections
-

Top Specs

Memory
4x DDR5

Memory

Memory Type and RAM Slots

Indicates the type of RAM memory supported by the motherboard (e.g., DDR4, DDR5) and the number of slots (DIMM slots) for the modules, which determines how much memory can be installed in total.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Description

The ASRock B850M Pro-A is a Micro ATX motherboard with an AMD AM5 socket, compatible with Ryzen Series 9000, 8000, and 7000 processors. The Pro-A series is designed for enhanced stability, durability, and efficiency, offering reliable performance, user-friendly features, and a sleek aesthetic, making it ideal for everyday computing needs. It also offers support for technologies such as PCIe 5.0, which allows the connection of the most modern graphics cards and other peripheral devices with high data transfer speeds.

Optimized VRM Design

  • 8+2+1 Power Phase Design Features durable components and completely smooth power delivery to the processor. Additionally, it offers unparalleled overclocking capabilities and improved performance with the lowest temperature, ideal for gamers.
  • Dr. MOS Dr.MOS is the integrated power solution designed for variable voltage applications. Compared to traditional discrete MOSFETs, Dr.MOS delivers higher current more intelligently to each phase, thus offering improved thermal performance results and superior overall performance.

DDR5 EXPO Support

Allows easy RAM upgrade with optimized settings for increased performance. By enabling EXPO profiles, you can ensure that the memory operates at the best possible speeds and stability, improving system performance for demanding applications and gaming.

PCIe Gen5 Blazing M.2

The Blazing M.2 supports the latest PCI Express 5.0 standard, offering double the bandwidth compared to the previous generation. With an impressive transfer speed of 128Gb/s, it is ready to unlock the full potential of future ultra-fast SSDs.

Smart Cooling Design

The first thing that catches the eye is the optimized design of the aluminum heatsink. Heatsinks are critical for efficient heat dissipation, especially during heavy workloads, such as gaming or productivity tasks. The motherboard built with heatsinks can effectively manage heat performance, thus ensuring system stability and longevity effortlessly.

Support for PWM/DC fans

Automatically detects whether the fans are operating in DC or PWM mode, allowing users to precisely adjust fan speed and achieve quieter operation.

① CPU Fan Connector  ② Chassis Fan Connectors

Dragon 2.5 Gb/s LAN

The intelligent 2.5Gb/s LAN platform is designed for maximum network performance, meeting the demanding needs of home networks, content creators, online gamers, and high-quality streaming services. It boosts network performance up to 2.5 times the bandwidth compared to standard gigabit Ethernet, offering a faster and uninterrupted connectivity experience for gaming, file transfers, and backups.

Manufacturer

Manufacturer Details

Warnings & Safety Information

Reviews (5)

4.4
5
4.4
Review this product
  1. 4
  2. 4 stars
    0
  3. 3 stars
    0
  4. 1
  5. 1 star
    0
Review this product
  • Number of ports
  • Number of BIOS functions
  • Easy hardware connection to the motherboard
  • Easy installation in the case
  • Temperature
  • VagosTech
    5
    2 out of 2 members found this review helpful
    VagosTech
    Expert Creator

    Verified purchase

    The most VFM motherboard with these features. Of course, do a BIOS update as soon as you get it because it has some significant issues without the latest BIOS version.

    Translated from Greek ·
    • Number of ports
    • Number of BIOS functions
    • Easy hardware connection to the motherboard
    • Easy installation in the case
    • Temperature
    Did you find this review helpful?
  • nikoslion2001
    2
    4 out of 6 members found this review helpful
    nikoslion2001

    GREAT ATTENTION!
    Anyone who already has the motherboard should urgently do a BIOS update.
    https://www.insomnia.gr/articles/hardware/amd/i-amd-apanta-sta-provlimata-katastrofis-ypodochon-am5/

    and on the asrock subreddit:
    https://www.reddit.com/r/ASRock/comments/1mvgndh/9000series_cpu_failuresdeaths_megathread_2/

    Personally, it burned my Ryzen 7900 within 10 days after purchase. I got a refund for both the motherboard and the processor (purchase via Skroutz).
    This applies only to the new series specifically on AM5. On AM4 I used only Asrock for years in all builds without any issue.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Matina_Xydi

    Verified purchase

  • 5
    Vassilis_Asimakis

    Verified purchase

  • 5
    KonstantinosSon

    Verified purchase

  • VagosTech
    5
    VagosTech

    The most VFM motherboard with these features. Of course, do a BIOS update as soon as you get it because it has some significant issues without the latest BIOS version.

    Translated from Greek ·
    2
  • nikoslion2001
    2
    nikoslion2001

    GREAT ATTENTION!
    Anyone who already has the motherboard should urgently do a BIOS update.
    https://www.insomnia.gr/articles/hardware/amd/i-amd-apanta-sta-provlimata-katastrofis-ypodochon-am5/

    and on the asrock subreddit:
    https://www.reddit.com/r/ASRock/comments/1mvgndh/9000series_cpu_failuresdeaths_megathread_2/

    Personally, it burned my Ryzen 7900 within 10 days after purchase. I got a refund for both the motherboard and the processor (purchase via Skroutz).
    This applies only to the new series specifically on AM5. On AM4 I used only Asrock for years in all builds without any issue.

    Translated from Greek ·
    4
  • 5
    Matina_Xydi

    0
  • 5
    Vassilis_Asimakis

    0
  • 5
    KonstantinosSon

    0
  • See all
124,45 €
14,00 €   shipping cost