Asrock B850M-X R2.0 mATX Motherboard | AM5 | 2x DDR5 Slots

Sku: 90-MXBSG0-A0UAYZ
Availability: In Stock
Brand: Asrock
Category: Motherboards
Regular price £101.59
Regular price Sale Price £101.59

KEY FEATURES

  • Supports AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors
  • 6+1+1 Phase Power Design, Dr.MOS for VCore
  • 2 x DDR5 DIMMs
  • Supports Dual Channel, up to 8200+ (OC)
  • 1 PCIe 5.0 x16, 1 PCIe 4.0 x16, 1 PCIe 4.0 x1, 1 M.2 Key E for WiFi
  • Graphics Output Options: 1 HDMI, 1 DisplayPort
  • Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio
  • 1 Blazing M.2 (PCIe Gen5x4)
  • 1 Hyper M.2 (PCIe Gen4x4)
  • 4 SATA3
  • 2 USB 3.2 Gen1 Type-C (1 Rear, 1 Front)
  • 5 USB 3.2 Gen1 (3 Rear, 2 Front)
  • 6 USB 2.0 (2 Rear, 4 Front)
  • Realtek 2.5G LAN
  • Supports BIOS Flashback
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Asrock B850M-X R2.0 mATX Motherboard | AM5 | 2x DDR5 Slots

Asrock B850M-X R2.0 mATX Motherboard | AM5 | 2x DDR5 Slots

Regular price £101.59
Regular price Sale Price £101.59
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Rated Excellent on Trustpilot Carbon Neutral Deliveries Free Standard Delivery Over £99
Description Specification Review FAQ

Description

The Asrock B850M-X R2.0 brings AMD's B850 chipset to the mATX form factor, supporting the latest Ryzen 7000, 8000, and 9000 series processors through the AM5 socket. This mainstream board balances affordability with solid capabilities, making it ideal for compact builds that don't compromise on modern features. The B850 chipset positions it between budget A620 boards and premium X870 options, delivering strong performance for gaming rigs, productivity workstations, and general-use systems where space matters.

Memory support centers on DDR5 with two DIMM slots supporting up to 128GB total capacity, along with ECC compatibility for users requiring error-corrected memory. The PCIe expansion is well-planned for a mATX board, featuring one PCIe 5.0 x16 slot for high-end graphics cards and one PCIe 4.0 x16 slot for additional expansion, plus a PCIe 4.0 x1 slot for smaller add-in cards. Connectivity includes 7.1-channel HD audio for quality sound output, while dual CPU fan headers provide flexible cooling management. An RGB LED pin header adds customization options for builders wanting lighting effects.

Setup remains straightforward with the 256MB AMI UEFI BIOS providing a modern interface for configuration and overclocking. The single 8-pin EPS power connector keeps cabling clean while delivering adequate power for most mainstream and enthusiast processors. Standard motherboard accessories include an I/O shield and user documentation to get builds started quickly. The board's compact mATX footprint makes it perfect for smaller cases while retaining the expansion capabilities needed for well-rounded PC builds.

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Shipping Information

  • Next Business Day:  £6.99

  • 2 days Delivery: £4.99

  • 3- 5 Days Shipping: £3.99

  • Orders Over £99.00: Free Standard Delivery
Processor
Processor manufacturer AMD
Processor socket Socket AM5
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Memory
Supported memory types DDR5-SDRAM
Number of memory slots 2
Memory slots type DIMM
Memory channels Dual-channel
ECC сompatibility ECC & Non-ECC
Maximum internal memory 128 GB
Unbuffered memory Yes
Storage controllers
Supported storage drive interfaces M.2, SATA III
Internal I/O
USB 2.0 connectors 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors 1
Number of SATA III connectors 4
Front panel audio connector Yes
ATX Power connector (24-pin) Yes
CPU fan connector Yes
Number of CPU fan connectors 2
EPS power connector (8-pin) Yes
Number of EPS power connectors (8-pin) 1
TPM connector Yes
RGB LED pin header Yes
Rear panel I/O ports
USB 2.0 ports quantity 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 3
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity 1
Ethernet LAN (RJ-45) ports 1
HDMI ports quantity 1
DisplayPorts quantity 1
DisplayPort version 1.4
Network
Ethernet LAN Yes
Ethernet interface type 2.5 Gigabit Ethernet
LAN controller Dragon RTL8125BG
Wi-Fi No
Features
Component for PC
Motherboard form factor micro ATX
Motherboard chipset family AMD
Motherboard chipset AMD B850
Audio output channels 7.1 channels
Windows operating systems supported Windows 10 x64, Windows 11 x64
Expansion slots
PCI Express x1 (Gen 4.x) slots 1
PCI Express x16 (Gen 4.x) slots 1
PCI Express x16 (Gen 5.x) slots 1
Number of M.2 (M) slots 1
BIOS
BIOS type UEFI AMI
BIOS memory size 256 Mbit
Weight & dimensions
Width 244 mm
Depth 226 mm

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