

£156.05 Original price was: £156.05.£147.10Current price is: £147.10.
£156.05 Original price was: £156.05.£147.10Current price is: £147.10.
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In stock

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Product Description
ASRock Pro-A B850 Perfected Performance and Connectivity

Built for Power Users and Overclockers
The ASRock Pro-A B850 motherboard delivers a harmonious blend of performance, stability, and innovative features tailored for both professionals and enthusiasts. With support for the latest AMD Ryzenâ„¢ 9000, 8000, and 7000 series processors on the AM5 socket, this ATX board is built to push boundaries. Backed by a 14+2+1 power phase design with 80A Dr.MOS and a high-efficiency 8-layer PCB, it offers exceptional overclocking potential while ensuring system stability. The memory configuration supports blazing DDR5 speeds over 8000+ MHz (OC), and the robust cooling design with aluminum heatsinks and customizable fan controls makes it an ideal choice for performance-driven users.
Cutting-Edge DDR5 & PCIe 5.0 Support
Connectivity is a highlight of the Pro-A B850, boasting Dragon 2.5G LAN, front-panel USB 3.2 Gen2x2 Type-C, and dual DisplayPort-capable USB Type-C ports. Expansion options are extensive with support for PCIe 5.0 and 4.0 slots, alongside four M.2 sockets including a Gen5 Blazing M.2 for ultra-fast SSDs. Audio is equally strong with Realtek’s ALC897 7.1 HD codec, ensuring immersive sound for gaming and media.

Full-Speed USB and 2.5G LAN Mastery
The board is topped off with signature ASRock features like BIOS Flashback, Polychrome RGB lighting, and SignalRGB support for advanced customization. With EZ Setup tools such as the Auto Driver Installer and reinforced PCIe Steel Slot, this motherboard is built to simplify setup and endure heavy-duty usage. Whether you're building a gaming rig, workstation, or creative suite, the ASRock Pro-A B850 offers the power and reliability to match your ambition.

Category | Details |
---|---|
Motherboard Type | Desktop |
Form Factor | ATX |
Socket | AMD AM5 |
Chipset | AMD B850 |
CPU Support | CPU support |
RAM Technology | DDR5 (Dual Channel), ECC and Non-ECC Un-buffered DIMM, Supports XMP & EXPO |
RAM Slots | 4 x DIMM |
RAM Speeds | Up to 8000+ (OC) |
Maximum Memory | 256GB |
Graphics | Integrated Graphics (Graphics specifications may vary by CPU type) |
Graphics Ports | 1 x HDMI 1 x USB 3.2 Gen1 Type-C (supports DP 1.4 HBR3) |
PCI/PCI Express | Ryzen 9000 & 7000 Series CPUs: 1 x PCIe 5.0 x16 Ryzen 8000 Series CPUs: 1 x PCIe 4.0 x8/x4 AMD B850 Chipset: 1 x PCIe 4.0 x16 (x4 mode) |
Storage Interfaces | 4 x SATA III 4 x M.2 Ryzen 9000 & 7000 Series CPUs: M.2_1 (2280) – PCIe 5.0 x4 M.2_2 (2280) – PCIe 4.0 x4 Ryzen 8000 Series CPUs: M.2_1 (2280) – PCIe 4.0 x4 M.2_2 (2280) – PCIe 4.0 x4/x2 AMD B850 Chipset: M.2_3 (2230/2242/2260/2280) – PCIe 3.0 x4 M.2_4 (2280) – PCIe 4.0 x4 |
RAID Support | RAID 0, 1 (SATA devices) RAID 0, 1, 10 (M.2 NVMe devices) |
Wireless-LAN | 2.5GB LAN |
Audio | 7.1 CH HD Audio (Realtek ALC897 Audio Codec) |
USB Ports | Rear: 1 x USB 10Gbps Type-C 1 x USB 5Gbps Type-C 4 x USB 5Gbps Type-A 6 x USB 2.0 Front: 1 x USB 20Gbps Type-C 2 x USB 5Gbps Type-A 3 x USB 2.0 |
Back Panel I/O Ports | 2 x Antenna Mounting Points 1 x HDMI 1 x USB 3.2 Gen2 Type-C 1 x USB 3.2 Gen1 Type-C 4 x USB 3.2 Gen1 Type-A 6 x USB 2.0 1 x RJ-45 LAN 1 x BIOS Flashback Button HD Audio Jacks |
Internal I/O Connectors | 1 x SPI TPM 1 x Power LED and Speaker 1 x RGB LED 3 x Addressable LED 2 x CPU Fan 4 x Chassis Fan 1 x AIO Pump Fan 1 x 24-pin ATX 2 x 8-pin 12V 1 x Front Panel Audio 2 x USB 2.0 1 x USB 3.2 Gen1 1 x Front Panel Type-C USB 3.2 Gen2x2 |
Accessories | 1 x I/O Shield 2 x SATA Data Cables 1 x Screw for M.2 Socket |
Package Type | Retail |
Package Weight | 1.7400 kg |
Warranty | 3 Year Replacement Warranty |
Full Box Quantity | 5 |
Other Options
Customer Reviews
37 reviews for ASRock B850 PRO-A, AMD B850, AM5, ATX, DDR5, USB-C, 2.5G LAN, HDMI, 4x M.2
Clear filtersRecently viewed
- Form Factor: ATX
- Socket: AMD AM5
- Chipset: AMD B850
- DDR Type: DDR5
ASRock Pro-A B850 Perfected Performance and Connectivity

Built for Power Users and Overclockers
The ASRock Pro-A B850 motherboard delivers a harmonious blend of performance, stability, and innovative features tailored for both professionals and enthusiasts. With support for the latest AMD Ryzenâ„¢ 9000, 8000, and 7000 series processors on the AM5 socket, this ATX board is built to push boundaries. Backed by a 14+2+1 power phase design with 80A Dr.MOS and a high-efficiency 8-layer PCB, it offers exceptional overclocking potential while ensuring system stability. The memory configuration supports blazing DDR5 speeds over 8000+ MHz (OC), and the robust cooling design with aluminum heatsinks and customizable fan controls makes it an ideal choice for performance-driven users.
Cutting-Edge DDR5 & PCIe 5.0 Support
Connectivity is a highlight of the Pro-A B850, boasting Dragon 2.5G LAN, front-panel USB 3.2 Gen2x2 Type-C, and dual DisplayPort-capable USB Type-C ports. Expansion options are extensive with support for PCIe 5.0 and 4.0 slots, alongside four M.2 sockets including a Gen5 Blazing M.2 for ultra-fast SSDs. Audio is equally strong with Realtek’s ALC897 7.1 HD codec, ensuring immersive sound for gaming and media.

Full-Speed USB and 2.5G LAN Mastery
The board is topped off with signature ASRock features like BIOS Flashback, Polychrome RGB lighting, and SignalRGB support for advanced customization. With EZ Setup tools such as the Auto Driver Installer and reinforced PCIe Steel Slot, this motherboard is built to simplify setup and endure heavy-duty usage. Whether you're building a gaming rig, workstation, or creative suite, the ASRock Pro-A B850 offers the power and reliability to match your ambition.

Category | Details |
---|---|
Motherboard Type | Desktop |
Form Factor | ATX |
Socket | AMD AM5 |
Chipset | AMD B850 |
CPU Support | CPU support |
RAM Technology | DDR5 (Dual Channel), ECC and Non-ECC Un-buffered DIMM, Supports XMP & EXPO |
RAM Slots | 4 x DIMM |
RAM Speeds | Up to 8000+ (OC) |
Maximum Memory | 256GB |
Graphics | Integrated Graphics (Graphics specifications may vary by CPU type) |
Graphics Ports | 1 x HDMI 1 x USB 3.2 Gen1 Type-C (supports DP 1.4 HBR3) |
PCI/PCI Express | Ryzen 9000 & 7000 Series CPUs: 1 x PCIe 5.0 x16 Ryzen 8000 Series CPUs: 1 x PCIe 4.0 x8/x4 AMD B850 Chipset: 1 x PCIe 4.0 x16 (x4 mode) |
Storage Interfaces | 4 x SATA III 4 x M.2 Ryzen 9000 & 7000 Series CPUs: M.2_1 (2280) – PCIe 5.0 x4 M.2_2 (2280) – PCIe 4.0 x4 Ryzen 8000 Series CPUs: M.2_1 (2280) – PCIe 4.0 x4 M.2_2 (2280) – PCIe 4.0 x4/x2 AMD B850 Chipset: M.2_3 (2230/2242/2260/2280) – PCIe 3.0 x4 M.2_4 (2280) – PCIe 4.0 x4 |
RAID Support | RAID 0, 1 (SATA devices) RAID 0, 1, 10 (M.2 NVMe devices) |
Wireless-LAN | 2.5GB LAN |
Audio | 7.1 CH HD Audio (Realtek ALC897 Audio Codec) |
USB Ports | Rear: 1 x USB 10Gbps Type-C 1 x USB 5Gbps Type-C 4 x USB 5Gbps Type-A 6 x USB 2.0 Front: 1 x USB 20Gbps Type-C 2 x USB 5Gbps Type-A 3 x USB 2.0 |
Back Panel I/O Ports | 2 x Antenna Mounting Points 1 x HDMI 1 x USB 3.2 Gen2 Type-C 1 x USB 3.2 Gen1 Type-C 4 x USB 3.2 Gen1 Type-A 6 x USB 2.0 1 x RJ-45 LAN 1 x BIOS Flashback Button HD Audio Jacks |
Internal I/O Connectors | 1 x SPI TPM 1 x Power LED and Speaker 1 x RGB LED 3 x Addressable LED 2 x CPU Fan 4 x Chassis Fan 1 x AIO Pump Fan 1 x 24-pin ATX 2 x 8-pin 12V 1 x Front Panel Audio 2 x USB 2.0 1 x USB 3.2 Gen1 1 x Front Panel Type-C USB 3.2 Gen2x2 |
Accessories | 1 x I/O Shield 2 x SATA Data Cables 1 x Screw for M.2 Socket |
Package Type | Retail |
Package Weight | 1.7400 kg |
Warranty | 3 Year Replacement Warranty |
Full Box Quantity | 5 |
Leanna (verified owner) –
Decent thermal performance, not the best
Parker (verified owner) –
Impressive speed, just a bit warm under load
Livia (verified owner) –
Stable and reliable so far, time will tell
Pedro (verified owner) –
Works flawlessly with my setup
Lucius (verified owner) –
A must-have upgrade for any serious gamer
Patience (verified owner) –
Would definitely buy again from this store
Luisa (verified owner) –
Very good quality but slightly pricey
Maudie (verified owner) –
Very stable even under heavy load
Neha (verified owner) –
Support was slow to respond
Marguerite (verified owner) –
No issues at all, plug and play with great performance
Rebeka (verified owner) –
Everything works fine, but delivery could be faster
Pius (verified owner) –
Not bad, but there are better options for the price
Landen (verified owner) –
No extras included, just the bare component
Minnie (verified owner) –
No major issues, but lacks polish
Orpha (verified owner) –
Solid performance, just wish it came with more documentation
Luis (verified owner) –
Fair price and great service
Noemie (verified owner) –
This component exceeded my expectations
Marc (verified owner) –
Installation was easy but needed a quick BIOS update
Mireya (verified owner) –
Works okay but not a huge improvement
Michel (verified owner) –
Massive improvement from my old component
Mackenzie (verified owner) –
Came with everything needed to get started
Marisa (verified owner) –
Works great but shipping took a bit longer than expected
Ofelia (verified owner) –
Nice upgrade, software could be improved
Maybelle (verified owner) –
Good value but no included cables
Lulu (verified owner) –
Helped speed up my PC noticeably
Lauretta (verified owner) –
Very efficient and stays cool
Lera (verified owner) –
My FPS increased significantly after installation
Norwood (verified owner) –
Very satisfied, just a small scratch on arrival
Lucienne (verified owner) –
Gets the job done, nothing more
Mathias (verified owner) –
Installation was simple and quick
Liana (verified owner) –
Good choice for mid-range builds
Lavonne (verified owner) –
Delivered ahead of time and well packed
Orin (verified owner) –
Build quality is impressive, fan a bit loud
Lew (verified owner) –
Highly recommend for any PC build
Macie (verified owner) –
Performance boost was noticeable
Lempi (verified owner) –
Had some issues during installation
Mustafa (verified owner) –
Happy with the product, minor noise under load