ASRock B850M‑X Micro‑ATX AM5 Motherboard – DDR5, PCIe 5.0, 2.5GbE
ASRock B850M‑X Micro‑ATX AM5 Motherboard
The ASRock B850M‑X is a compact and powerful Micro‑ATX motherboard built for AMD’s latest Ryzen 9000, 8000, and 7000 Series processors. Featuring the AMD B850 chipset, it delivers next‑generation performance with support for DDR5 memory up to 8200+ MHz (OC) and cutting‑edge storage options including PCIe 5.0 Blazing M.2 and PCIe 4.0 Hyper M.2. With a reinforced PCIe 5.0 x16 slot, 2.5GbE LAN, and dual display outputs (HDMI + DisplayPort), this board is ideal for gaming, productivity, and high‑speed workstation builds.
The 6+1+1 Dr.MOS power design ensures stable power delivery, while the 6‑layer PCB enhances signal integrity for improved memory overclocking. Additional features such as BIOS Flashback, Auto Driver Installer, Nahimic Audio, and Polychrome RGB support make the B850M‑X a versatile and user‑friendly choice for modern AM5 systems.
Specifications
Type: Micro‑ATX Motherboard
Brand: ASRock
Model: B850M‑X R2.0
Chipset: AMD B850
CPU Socket: AM5
CPU Support: Ryzen 9000 / 8000 / 7000 Series
Memory
Dual‑Channel DDR5
2 × DDR5 DIMM Slots
Supports ECC & non‑ECC
Up to 8200+ MHz (OC)
Max Capacity: 128GB
Supports XMP & AMD EXPO profiles
PCIe Slots
1 × PCIe 5.0 x16 (GPU)
1 × PCIe 4.0 x16 (x4 mode)
1 × PCIe 4.0 x1
1 × M.2 Key‑E slot for WiFi modules
Storage
M.2 Slots:
1 × Blazing M.2 PCIe 5.0 x4 (2280)
1 × Hyper M.2 PCIe 4.0 x4 (2260/2280)
SATA: • 4 × SATA3 6Gb/s
RAID Support: • RAID 0/1/10 for SATA • RAID 0/1/10 for NVMe M.2
Networking
Realtek Dragon 2.5Gb LAN
Supports bandwidth control
traffic prioritisation
and gaming‑optimised profiles
Audio
Realtek ALC897 7.1‑Channel HD Audio
Nahimic Audio enhancements (noise suppression, voice stabiliser, sound tracker)
Video Outputs (requires Ryzen CPU with integrated graphics)
1 × HDMI 2.1 (up to 4K 120Hz)
1 × DisplayPort 1.4 (up to 4K 120Hz)
USB Connectivity
Rear I/O
1 × USB‑C 3.2 Gen1
3 × USB‑A 3.2 Gen1
2 × USB 2.0
HDMI
DisplayPort
2.5Gb LAN
Audio jacks
BIOS Flashback button
Internal Headers
USB‑C 3.2 Gen1 (front)
USB 3.2 Gen1 header
USB 2.0 headers
RGB + 3 × ARGB headers
CPU fan, AIO pump, chassis fan headers
TPM header
Front panel audio
Power Connectors: 24‑pin ATX, 8‑pin 12V CPU power
Form Factor Micro‑ATX: 24.4 cm × 22.6 cm
Weight: 1.2 kg
Most Suitable For
Budget‑friendly AM5 gaming PCs
Ryzen 7000 / 8000 / 9000 builds
PCIe 5.0 NVMe storage setups
Compact Micro‑ATX systems
Productivity, office, and mixed‑use builds