ASRock B850M-X AM5 Micro-ATX Motherboard

The ASRock B850M-X delivers reliable performance for AMD Ryzen 9000, 8000, and 7000 series processors in a compact Micro-ATX form factor. Built on the AMD B850 chipset, this motherboard provides essential features for modern PC builds with a 6+1+1 phase power design and Dr.MOS for VCore, ensuring stable power delivery.

DDR5 Memory and Expansion

Equipped with 2 DDR5 DIMM slots supporting speeds up to 8200+ MHz (OC) with a maximum capacity of 128GB. Intel XMP and AMD EXPO profiles enable one-click memory overclocking. The 6-layer PCB construction provides improved signal integrity and thermal efficiency for memory overclocking stability. PCIe configuration features 1 PCIe 5.0 x16 slot with reinforced steel construction for graphics cards, 1 PCIe 4.0 x16 slot (x4 mode), and 1 PCIe 4.0 x1 slot.

Storage and Connectivity

Storage options include 1 PCIe Gen5 x4 Blazing M.2 socket delivering 128Gb/s transfer speeds, 1 PCIe Gen4 x4 Hyper M.2 socket, and 4 SATA3 6.0 Gb/s connectors. RAID 0, 1, and 10 support is available for both M.2 NVMe and SATA devices. Realtek 2.5 Gigabit LAN with Dragon software provides bandwidth optimization and network traffic management.

USB connectivity consists of 2 USB 3.2 Gen1 Type-C ports (1 rear, 1 front), 5 USB 3.2 Gen1 Type-A ports, and 6 USB 2.0 ports. Integrated AMD RDNA graphics output through 1 HDMI 2.1 port and 1 DisplayPort 1.4, both supporting 4K 120Hz resolution with HDR and HDCP 2.3.

Audio and Cooling

Realtek ALC897 7.1 CH HD Audio codec with Nahimic Audio technology provides enhanced sound quality with noise suppression, echo cancellation, and Sound Tracker. Aluminum heatsinks ensure efficient thermal management. Fan control includes 2 CPU fan connectors, 3 chassis/water pump fan connectors, and 1 AIO pump fan connector, all with 4-pin smart fan speed control.

User-Friendly Features

BIOS Flashback button enables BIOS updates using only a USB drive and power supply—no CPU or RAM required. ASRock Auto Driver Installer pre-installs LAN drivers for easy system setup. Polychrome RGB and SignalRGB support allow customization of onboard RGB and addressable RGB headers. The motherboard measures 9.6 x 8.9 inches (24.4 x 22.6 cm) and supports Microsoft Windows 10/11 64-bit. Package includes I/O shield, 2 SATA data cables, and M.2 mounting screw.

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

Performance

Power Phase Design
Featuring sturdy components and completely smooth power delivery to the CPU, offering enhanced performance for gamers.

Dr. MOS
Dr.MOS is an integrated power stage optimized for synchronous buck-set down voltage applications, delivering higher current and better thermal efficiency than traditional MOSFETs, ensuring enhanced stability.

6 Layer PCB
The 6 Layer PCB provides stable signal traces and power shapes delivering lower temperature and higher energy efficiency for memory overclocking! Thus, it's able to support the latest memory modules with most extreme memory performance!

DDR5 XMP & EXPO Support
Derived from the "built for stable and reliable" designing concept, ASRock does not compromise on any details. This motherboard is built with high quality materials, enthusiasts are able to enjoy the boost of DDR5 memory overclocking performance by enabling the pre-tested profiles. Make sure the memory modules are Intel XMP/AMD EXPO capable and overclocking can be made so affordable, satisfying and absolutely no sweat at all.

High Speed M.2 Solution

PCIe Gen5 Blazing M.2
The Blazing M.2 accommodates the latest PCI Express 5.0 standard to perform twice the bandwidth compared to previous generation, with a breathtaking 128Gb/s transfer speed, it is ready to unleash the full potential of future ultrafast SSDs.

Intelligent Cooling Design

Cooling

Aluminum Heatsink
The first thing that catches the eye is the optimized Aluminum Heatsink Design. Heatsinks are crucial for efficient heat dissipation, especially during heavy workloads like gaming or productivity tasks. Motherboard that built with heatsinks can effectively manage thermal performance, hence ensure system stability and durability effortlessly.

Connectivity

Dragon 2.5 Gb/s LAN
The intelligent 2.5Gb/s LAN platform is built for maximum networking performance for the demanding requirements of home networking, content creators, online gamers and high-quality streaming media. Boost networking performance up to 2.5X the bandwidth compared to the standard gigabit Ethernet, you'll enjoy the faster and uncompromised connectivity experience for gaming, file transfers and backups.

Front USB 3.2 Gen1 Type-C
Front USB 3.2 Gen1 Type-C header delivers up to 5 Gbps data transfer rate and next generation reversible USB design to the front panel of computer case.

Nahimic Audio
Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant and rich with details.

The Powerful algorithms to ensure the best noise-free conversation, giving a constant vocal level no matter the distance from your mic. The Nahimic audio engine dynamically clear the sound and remove interference noise and lower the voice variation. Result is a better comprehension and less fatigue.
Static Noise Suppression
Echo Cancellation
Lateral Sound Cancellation
Voice Stabilizer
Sound Tracker, The Sound Tracker is a visual indicator that points out the directions from which predominant sounds are coming. Each sound is properly positioned in 360° on a radar for a full immersion during the game.
Works on any devices! Enjoy the vibrant and high-quality Surround Sound on all your favorite audio devices. Nahimic is compatible with all of your favorite audio tools and ensures the best sound with any of them. Nahimic measure and improve to optimize our technology and offer you the best experience.

Stylish Design

POLYCHROME RGB
This motherboard features onboard RGB headers and addressable RGB headers that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects

SignalRGB
SignalRGB unifies your RGB devices, offering seamless customization, game-reactive effects, macro automation, and system monitoring. The official partnership empowers ASRock motherboards with advanced lighting control, enhances compatibility with a diverse range of RGB devices, and provides greater customization flexibility.

DIY Friendly

Reinforced Steel Slot [PCIe 5.0 Version]
The reinforced steel slot is capable of supporting PCI Express 5.0 standard. The various benefits include:
Extra anchor points
Stronger latch
Ensure signal stability
Make sure heavy graphics cards to be well-installed

Dual Graphics Outputs
Complete with two types of most used connectors! Packed with a HDMI + DisplayPort combo, you have more graphics output options now.

EZ Setting

Auto Driver Installer
No need to worry about lack of disk drive! Asrock preinstall LAN driver to ensure that you are able to install all drivers needed in an easier way than using SCD.
step1 : Install Auto Driver Installer
step2 : Update drivers needed
step3 : Done!

BIOS Flashback
Get the most convenient BIOS flashing with just a simple click. Users can easily achieve the latest BIOS support with a USB and a power supply. No CPU, RAM or other components are required.

Specification

Unique Feature

Superb Productivity
PCIe Gen5 (Graphics, M.2)
Dual Channel DDR5
Rock-Solid Durability
6+1+1 Power Phase, Dr.MOS for VCore
Ultrafast Connectivity
2.5G LAN
EZ Update
BIOS Flashback Button
ASRock Auto Driver Installer
EZ Troubleshooter
ASRock Post Status Checker

CPU
Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors

Chipset
AMD B850

Memory
Dual Channel DDR5 Memory Technology
2 x DDR5 DIMM Slots
Supports DDR5 ECC/non-ECC, un-buffered memory up to 8200+(OC)
Max. capacity of system memory: 128GB
Supports Extreme Memory Profile (XMP) and EXTended Profiles for Overclocking (EXPO) memory modules

BIOS
256Mb AMI UEFI Legal BIOS with GUI support

Graphics
Integrated AMD RDNA graphics (Actual support may vary by CPU)
1 x HDMI 2.1 TMDS/FRL 8G Compatible, supports HDR, HDCP 2.3 and max. resolution up to 4K 120Hz
1 x DisplayPort 1.4 with DSC (compressed), supports HDCP 2.3 and max. resolution up to 4K 120Hz

Audio
7.1 CH HD Audio (Realtek ALC897 Audio Codec)
Nahimic Audio

LAN
2.5 Gigabit LAN 10/100/1000/2500 Mb/s
Dragon RTL8125BG
Supports Dragon 2.5G LAN Software
Smart Auto Adjust Bandwidth Control
Visual User Friendly UI
Visual Network Usage Statistics
Optimized Default Setting for Game, Browser, and Streaming Modes
User Customized Priority Control

Slots

CPU
1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode

Chipset
1 x PCIe 4.0 x1 Slot (PCIE2)
1 x PCIe 4.0 x16 Slot (PCIE3), supports x4 mode
1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module

Storage

CPU
1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode
1 x Hyper M.2 Socket (M2_2, Key M), supports type 2260/2280 PCIe Gen4x4 (64 Gb/s) mode

Chipset
4 x SATA3 6.0 Gb/s Connectors

RAID
Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
Supports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices

USB

CPU
3 x USB 3.2 Gen1 Type-A (Rear)
1 x USB 2.0 (Rear (USB_2))

Chipset
2 x USB 3.2 Gen1 Type-C (1 Rear, 1 Front)
2 x USB 3.2 Gen1 Type-A (Front)
5 x USB 2.0 (1 Rear (USB_1), 4 Front)

Connector
1 x Thermistor Cable Header
1 x SPI TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header
3 x Addressable LED Headers
2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)
3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)
1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
1 x Front Panel Audio Connector
2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header

Rear Panel I/O
2 x Antenna Mounting Points
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen1 Type-C Port
3 x USB 3.2 Gen1 Type-A Ports
2 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone

Software and UEFI

Software
ASRock Motherboard Utility (A-Tuning)
ASRock Dragon 2.5G LAN Software
ASRock Polychrome SYNC

UEFI
ASRock EZ Mode
ASRock Full HD UEFI
ASRock Auto Driver Installer
ASRock Instant Flash

Accessories
1 x I/O Shield
2 x SATA Data Cables
1 x Screw for M.2 Socket

Form Factor
Micro ATX Form Factor: 9.6-in x 8.9-in, 24.4 cm x 22.6 cm

OS
Microsoft Windows 10 64-bit / 11 64-bit

Certifications
FCC, CE
ErP/EuP ready (ErP/EuP ready power supply is required)

• Socket: AM5
• CPU Compatibility: AMD Ryzen 9000/8000/7000
• Chipset: AMD B850
• Form Factor: Micro ATX
• Memory Slots: DDR5 - 2 Slots
• M.2 Compatibility:
• USB C: Yes