Skip to content

We may earn commission on links. How we make money

Asrock B850M Riptide WiFi (Socket AM5) DDR5 mATX Motherboard
MotherboardsASRock

Asrock B850M Riptide WiFi (Socket AM5) DDR5 mATX Motherboard

MPN: 90-MXBS30-A0UAYZ

Key specifications

SocketAM5
Form factormATX
ChipsetAMD B850
Memory typeDDR5
M.2 slots4
Max Memory256 GB
Best indexed price
£169.80GBP
Indexed 16 Mar 2026 — verify at retailer. How we get prices

Retailer offers

eBay UK£169.80
Indexed 16 Mar 2026New · seller quzo_uk
Check price at eBay
Amazon UKProduct link
Find on Amazon
More retailers coming

We only list a retailer once we hold verified offer data for it. No placeholder prices, ever.

Indexed prices are snapshots, not live quotes. Confirm price, stock and delivery on the retailer's site — checkout completes there.

We may earn a commission from these links. How it works

Fit check

Add this to your build in the PC Builder to automatically check dimensions, sockets, and power draw.

Check against your build

Same specs for less

Matched on the listed specs that matter for this kind of part, at each listing's lowest new price. Other details (cooling, warranty, looks) can differ.

Related Products

ASUS PRIME B550M-A
Asus

PRIME B550M-A

Asrock B850I Lightning WiFi (Socket AM5) DDR5 Mini-ITX Motherboard
ASRock

B850I Lightning WiFi (Socket AM5) DDR5 Mini-ITX Motherboard

£195.46Indexed 20 Oct
ASUS Pro H610M-CT D4-CSM
Asus

Pro H610M-CT D4-CSM

ASUS ROG MAXIMUS Z790 HERO EVA-02 EDITION
Asus

ROG MAXIMUS Z790 HERO EVA-02 EDITION

Full Specifications114 fields

Additional Information

Model Number
90-MXBS30-A0UAYZ
Gtin
4711581490482

Additional Specifications

Water Cooled
No
Cooling
Passive Heatsinks
Qpi Speed
N/A
Dimensions
244 x 244 mm
Note
-

BIOS

Bios Type
UEFI AMI
Bios Memory Size
256 Mbit

Core Specifications

Edition
B850M Riptide WiFi
Form Factor
MicroATX
Chipset
AMD B850

Expansion slots

Pci Express X8 Gen 4 X Slots
1
Pci Express X16 Gen 5 X Slots
1
Number Of M 2 M Slots
3
1st M 2 Largest Key Size
2580
1st M 2 Highest Pci Express Generation
5.0
2nd M 2 Largest Key Size
2280
2nd M 2 Highest Pci Express Generation
4.0
3rd M 2 Largest Key Size
2280
3rd M 2 Highest Pci Express Generation
4.0

External Connectivity

Network Interface Type
802.11be Wi-Fi 7 LAN Wired 2.5 Gigabit LAN
Network Chip Modules
1 x 802.11be WiFi 7 + BT5.4 1 x Realtek RTL8125BG
Rear I O Connectors
1 x BIOS Flashback Button 1 x DisplayPort 1.4 1 x Front Speaker Out 1 x HDMI 2.1 1 x Line In 1 x Mic-In 1 x RJ-45 4 x USB 2.0 2 x USB 3.2 Gen1 Type-A 1 x USB 3.2 Gen2 Type-A 1 x USB 3.2 Gen2 Type-C 2 x WiFi Antenna connectors

Features

Motherboard Chipset
AMD B850
Audio Chip
Realtek ALC1220
Audio Output Channels
7.1 channels
Product Colour
Black
Component For
PC
Motherboard Form Factor
micro ATX
Motherboard Chipset Family
AMD
Windows Operating Systems Supported
Windows 10 x64, Windows 11 x64
Certification
FCC, CE, ErP/EuP

Graphics

Parallel Processing Technology Support
Not supported
Maximum Resolution
3840 x 2160 pixels
Hdcp
Yes

Graphics Support

Primary Gpu Interface
PCIe 5.0 (x16)
Nvidia Sli Support
N/A
Amd Crossfire Support
N/A
Integrated Graphics
Discrete GPU Required for Graphics Output
On Board Graphics Connectors
DisplayPort 1.4 (DSC) HDMI 2.1

Internal Connectivity

Expansion Slots
1 x M.2 Key E (Supports Wi-Fi modules) 1 x M.2, 22-60/80, PCIe Gen4x2 1 x M.2, 22-60/80, PCIe Gen4x4 1 x M.2, 22-80, PCIe Gen5x4 1 x PCIe 4.0 x4 1 x PCIe 5.0 x16 4 x SATA 6GB/s
Sata Support
N/A
Raid Support Via
-
Storage Mode Support
RAID 0 RAID 1 RAID 10
Internal I O
1 x 24-pin (Power) 1 x 4-pin (Power) 3 x 4-pin CHA_FAN connector 1 x 8-pin (Power) 3 x Addressable Digital RGB Header 2 x CPU Fan Connector 1 x Front Panel Audio Header 1 x Power LED / Speaker Header 1 x RGB Header 1 x TPM (SPI_TPM) header 2 x USB 2.0 Header 2 x USB 3.2 Gen1 Header 1 x USB 3.2 Gen1 Type-C Front Panel Header

Internal I/O

Usb 2 0 Connectors
2
Usb 3 2 Gen 1 3 1 Gen 1 Connectors
3
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
Number Of Chassis Fan Connectors
3
Eps Power Connector 8 Pin
Yes
Number Of Eps Power Connectors 8 Pin
1
Tpm Connector
Yes
12v Power Connector
Yes
Rgb Led Pin Header
Yes
Number Of Rgb Led Pin Headers
1

Memory

Supported Memory Types
DDR5-SDRAM
Number Of Memory Slots
4
Memory Slots Type
DIMM
Memory Channels
Dual-channel
Ecc Ompatibility
ECC & Non-ECC
Maximum Internal Memory
256 GB
Unbuffered Memory
Yes

Network

Ethernet Lan
Yes
Ethernet Interface Type
2.5 Gigabit Ethernet
Lan Controller
Dragon RTL8125BG
Wi Fi
Yes
Top Wi Fi Standard
Wi-Fi 7 (802.11be)
Wi Fi Standards
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
Bluetooth
Yes
Bluetooth Version
5.4

Packaging content

Cables Included
SATA
Antenna Included
Yes
Screws Included
Yes
M 2 Standoff Included
Yes

Processor

Processor Manufacturer
AMD
Socket
Socket AM5
Compatible Processor Series
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported Processor Sockets
Socket AM5

RAM Memory Support

Memory Type
DDR5
Memory Channel
Dual (2)
Memory Type Ecc
ECC/Non-ECC
Memory Type R U
UDIMM (Unbuffered)
Memory Speed Mhz
DDR5 - 8000(OC)
Max Memory Capacity
256GB

Rear panel I/O ports

Usb 2 0 Ports Quantity
4
Usb 3 2 Gen 1 3 1 Gen 1 Type A Ports Quantity
2
Usb 3 2 Gen 2 3 1 Gen 2 Type A Ports Quantity
1
Usb 3 2 Gen 2 3 1 Gen 2 Type C Ports Quantity
1
Ethernet Lan Rj 45 Ports
1
Hdmi Ports Quantity
1
Hdmi Version
2.1
Displayports Quantity
1
Displayport Version
1.4
Headphone Outputs
3
Line In
Yes
Microphone In
Yes
Wifi Ap Antenna Jack
2
Usb Connector Type
USB Type-A, USB Type-C

Storage controllers

Supported Storage Drive Types
HDD & SSD
Supported Storage Drive Interfaces
PCI Express 4.0, PCI Express 5.0, SATA III
Number Of Storage Drives Supported
7
Raid Support
Yes
Raid Levels
0, 1, 10

Weight & dimensions

Width
244 mm
Depth
244 mm

General

Audio
7.1 Channel HD Audio