ASRock B850M-X

Name: ASRock B850M-X
Brand: ASRock
SKU: 2671

Manufacturer: ASRock

The ASRock B850M-X is a Micro-ATX motherboard designed around AMD's AM5 platform using the B850 chipset. Measuring 226 mm by 244 mm, it fits standard Micro-ATX enclosures and comes backed by a 3-year warranty. The board supports overclocking and includes dual BIOS functionality, though it does not carry onboard Wi-Fi or Bluetooth connectivity.

Memory support runs on DDR5 with two slots capable of holding up to 128 GB across dual channels, with overclocked speeds reaching 8200 MHz. Storage options include four SATA 3 connectors, two M.2 sockets, and RAID support for modes 0, 1, and 10. The rear I/O provides HDMI 2.1 and one DisplayPort output, a Gigabit Ethernet port, three USB 3.2 Gen 1 Type-A ports, one USB 3.2 Gen 1 Type-C port, and two USB 2.0 ports. Expansion is handled by two PCIe 4.0 x16 slots and one PCIe x1 slot, while six fan headers and a TPM connector are available through internal connectors.

Pros

Dual BIOS provides a built-in fallback in case of a failed update or corrupted firmware
DDR5 support with overclocked speeds up to 8200 MHz allows for high memory bandwidth configurations
Supports RAID 0, 1, and 10, giving meaningful flexibility for storage redundancy or performance setups
Six fan headers offer broad cooling management across the system
Three-year warranty provides a solid coverage period
HDMI 2.1 output alongside a DisplayPort enables connection to modern high-resolution displays

Cons

Only two memory slots limits upgrade flexibility and prevents configurations beyond a single dual-channel kit
No Wi-Fi or Bluetooth means wireless connectivity requires additional hardware
No PCIe 5.0 x16 slot restricts access to the latest high-bandwidth expansion devices
USB connectivity lacks Gen 2 or higher ports on the rear I/O, with only Gen 1 speeds available
No clear CMOS button makes BIOS resets a more involved process
ECC memory is not supported, limiting use in workloads that require error-correcting RAM

Who is this for?

This board is a solid fit for users building a compact AMD AM5 system who want DDR5 memory support with overclocking headroom up to 8200 MHz without needing a full ATX footprint. The Micro-ATX form factor suits smaller mid-tower builds where space is a consideration, and the dual BIOS adds a layer of reliability that appeals to enthusiasts who frequently update firmware. Users who need RAID 0, 1, or 10 storage configurations for basic redundancy or performance will find the four SATA 3 connectors and two M.2 sockets adequate for a mid-range storage setup. The six fan headers also make it a reasonable choice for those who prioritize thorough thermal management in their build.

Who is this NOT for?

This board is not well suited for users who require wireless connectivity out of the box, as it lacks both Wi-Fi and Bluetooth, making it a poor fit for environments where running ethernet cables is impractical. With only two memory slots, it is also a limiting choice for users who anticipate expanding RAM capacity beyond a single dual-channel kit in the future. Those running workloads that depend on ECC memory for data integrity — such as certain professional or server-adjacent tasks — will need to look elsewhere, as ECC is not supported. Additionally, users who want access to the latest PCIe 5.0 bandwidth for next-generation graphics cards or NVMe drives will find the absence of PCIe 5.0 x16 slots a meaningful constraint.

General info:

CPU socket	AM5
chipset	B850
form factor	Micro-ATX
supports Wi-Fi	✕
Has Bluetooth	✕
HDMI version	HDMI 2.1
Easy to overclock	✓
has RGB lighting	✕
Easy to reset BIOS	✕
Has dual BIOS	✓
CPU sockets	1
Has integrated graphics	✕
warranty period	3 years
height	226 mm
width	244 mm
Has integrated CPU	✕

The ASRock B850M-X is built around a single AM5 CPU socket paired with a B850 chipset, housed in a Micro-ATX form factor measuring 244 mm wide and 226 mm tall. The board supports overclocking and includes dual BIOS for added reliability, though it does not offer easy BIOS reset via a dedicated clear CMOS button. It outputs video through HDMI 2.1 but lacks integrated graphics and has no integrated CPU. Wi-Fi and Bluetooth are not present, and there is no RGB lighting on the board. The warranty period covers 3 years.

Memory:

maximum memory amount	128GB
overclocked RAM speed	8200 MHz
memory slots	2
DDR memory version	5
memory channels	2
Supports ECC memory	✕

The board uses DDR5 memory across two slots arranged in a dual-channel configuration, supporting a maximum capacity of 128 GB. Overclocked RAM speeds can reach up to 8200 MHz, offering flexibility for performance-oriented builds. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A)	0
USB 3.2 Gen 1 ports (USB-A)	3
USB 3.2 Gen 2 ports (USB-C)	0
USB 3.2 Gen 1 ports (USB-C)	1
USB 2.0 ports	2
USB 3.2 Gen 2x2 ports	0
USB 4 40Gbps ports	0
USB 4 20Gbps ports	0
Thunderbolt 4 ports	0
Thunderbolt 3 ports	0
has an HDMI output	✓
DisplayPort outputs	1
RJ45 ports	1
Has USB Type-C	✓
eSATA ports	0
DVI outputs	0
has a VGA connector	✕
PS/2 ports	0

The rear I/O provides a total of six USB ports: three USB 3.2 Gen 1 Type-A, one USB 3.2 Gen 1 Type-C, and two USB 2.0 ports. Higher-speed USB standards including Gen 2, Gen 2x2, USB 4, Thunderbolt 3, and Thunderbolt 4 are not present. Video output is handled by one HDMI port and one DisplayPort, while VGA, DVI, and eSATA outputs are absent. Networking is covered by a single RJ45 port, and there are no PS/2 ports on this board.

Connectors:

USB 3.2 Gen 1 ports (through expansion)	2
USB 2.0 ports (through expansion)	4
SATA 3 connectors	4
fan headers	6
USB 3.0 ports (through expansion)	2
M.2 sockets	2
Has TPM connector	✓
U.2 sockets	0
Has mSATA connector	✕
SATA 2 connectors	0

Internal connectivity includes four SATA 3 connectors for storage alongside two M.2 sockets, while SATA 2 and U.2 sockets are absent and there is no mSATA connector. USB expansion is handled through two USB 3.2 Gen 1 headers, two USB 3.0 headers, and four USB 2.0 headers. The board also features six fan headers for cooling management and includes a TPM connector for security module support.

Expansion slots:

PCIe 4.0 x16 slots	2
PCIe 5.0 x16 slots	0
PCIe 3.0 x16 slots	0
PCIe x1 slots	1
PCI slots	0
PCIe 2.0 x16 slots	0
PCIe x4 slots	0
PCIe x8 slots	0

Expansion on this board is centered around two PCIe 4.0 x16 slots and one PCIe x1 slot. There are no PCIe 5.0, PCIe 3.0, PCIe 2.0, PCIe x4, or PCIe x8 slots, and no legacy PCI slots are present.

Audio:

audio channels	7.1
Has S/PDIF Out port	✕
audio connectors	3

The board supports 7.1-channel audio output through three analog audio connectors on the rear I/O. A S/PDIF Out port is not included.

Storage:

Supports RAID 1	✓
Supports RAID 10 (1+0)	✓
Supports RAID 5	✕
Supports RAID 0	✓
Supports RAID 0+1	✕

The board supports RAID 0, RAID 1, and RAID 10 configurations for flexible storage setup options. RAID 5 and RAID 0+1 are not supported.

Final Verdict

The ASRock B850M-X is a Micro-ATX AM5 motherboard that covers the essentials for a compact DDR5 build, with its overclocking support and dual BIOS standing out as practical strengths for enthusiast users working within a smaller form factor. The combination of two M.2 sockets, four SATA 3 connectors, RAID support, and six fan headers gives it a well-rounded internal feature set for mid-range system builds. That said, the absence of Wi-Fi, Bluetooth, and PCIe 5.0 means it is best suited for users whose needs align closely with what it offers rather than those looking for a platform they can grow into over time. For a focused AM5 build where wired connectivity and DDR5 performance are the priorities, it presents a coherent and capable option.