ASRock B850 Pro-A

Name: ASRock B850 Pro-A
Brand: ASRock
SKU: 81785

Manufacturer: ASRock

The ASRock B850 Pro-A is a versatile ATX motherboard designed to support AM5 CPUs and high-performance components. Featuring a maximum memory capacity of 256GB, it is suitable for demanding applications and multitasking environments.

With support for DDR5 memory and up to 8000 MHz RAM speeds, this motherboard offers excellent memory performance. It includes dual PCIe 5.0 x16 slots for expanded GPU or expansion card options, as well as multiple M.2 sockets for fast storage configurations. The ASRock B850 Pro-A also provides a range of USB connectivity options, including USB Type-C, but lacks integrated Wi-Fi or Bluetooth.

Pros

Supports up to 256GB of DDR5 memory, enabling high capacity for demanding tasks.
Includes dual PCIe 5.0 x16 slots for advanced expansion options and future-proofing.
Equipped with four M.2 sockets for fast storage setups and flexibility in SSD configurations.
Has RGB lighting for customizable aesthetics, enhancing the visual appeal of builds.
Dual BIOS provides an additional layer of security and recovery options for system stability.

Cons

Lacks integrated Wi-Fi and Bluetooth, requiring external adapters for wireless connectivity.
Does not support RAID 5 or RAID 0+1, limiting some RAID configuration options.
Does not include any Thunderbolt ports for high-speed data transfer or connectivity.
Lacks DisplayPort, DVI, and VGA outputs, limiting display connectivity options for certain setups.

Who is this for?

The ASRock B850 Pro-A is well-suited for users seeking a motherboard with robust memory support, featuring a maximum of 256GB of DDR5 RAM and dual PCIe 5.0 x16 slots for high-performance computing or gaming builds. It is ideal for those who prioritize flexibility in storage setups, with its multiple M.2 sockets and support for various RAID configurations. Enthusiasts looking to build a system with advanced cooling setups will benefit from the seven fan headers, ensuring efficient thermal management in demanding workloads.

Who is this NOT for?

This motherboard may not be ideal for users needing integrated wireless connectivity, as it lacks both Wi-Fi and Bluetooth support. Additionally, users who require high-speed data transfer or external device compatibility may find its lack of Thunderbolt ports a limitation. It is also not suitable for users who need support for RAID 5 or RAID 0+1 configurations, as these options are not available on this board.

General info:

CPU socket	AM5
chipset	B850
form factor	ATX
release date	January 2025
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	244 mm
width	305 mm
Has integrated CPU	✕

The ASRock B850 Pro-A motherboard is designed with an AM5 CPU socket and supports the B850 chipset, making it compatible with a wide range of processors. It features a standard ATX form factor and offers a 3-year warranty for peace of mind. While it does not include integrated Wi-Fi or Bluetooth, it supports HDMI 2.1 for video output. The board also supports easy overclocking and includes dual BIOS for added reliability, though it lacks an integrated CPU and clear CMOS functionality for quick BIOS resets.

Memory:

maximum memory amount	256GB
overclocked RAM speed	8000 MHz
memory slots	4
DDR memory version	5
memory channels	2
Supports ECC memory	✕

The ASRock B850 Pro-A motherboard supports up to 256GB of memory and is equipped with four memory slots. It uses the DDR5 memory version, offering high-speed performance with overclocked RAM speeds of up to 8000 MHz. The motherboard is configured with dual memory channels to improve bandwidth, but it does not support ECC memory for error correction.

Ports:

USB 3.2 Gen 2 ports (USB-A)	0
USB 3.2 Gen 1 ports (USB-A)	4
USB 3.2 Gen 2 ports (USB-C)	1
USB 3.2 Gen 1 ports (USB-C)	1
USB 2.0 ports	6
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	0
RJ45 ports	1
Has USB Type-C	✓
eSATA ports	0
DVI outputs	0
has a VGA connector	✕
PS/2 ports	0

The ASRock B850 Pro-A motherboard offers a variety of connectivity options, including four USB 3.2 Gen 1 ports (USB-A) and two USB Type-C ports for flexible peripheral support. It also includes an HDMI output for video display, but lacks additional outputs like DisplayPort, DVI, or VGA. Other notable features include a single RJ45 port for network connectivity, and six USB 2.0 ports for basic peripherals. However, it does not include any Thunderbolt or eSATA ports.

Connectors:

USB 3.2 Gen 1 ports (through expansion)	2
USB 3.2 Gen 2x2 ports (through expansion)	1
USB 2.0 ports (through expansion)	3
SATA 3 connectors	4
fan headers	7
USB 3.0 ports (through expansion)	2
M.2 sockets	4
Has TPM connector	✓
U.2 sockets	0
Has mSATA connector	✕
SATA 2 connectors	0

The ASRock B850 Pro-A motherboard provides a comprehensive range of connectors, including four SATA 3 connectors for storage drives and four M.2 sockets for fast SSD installations. It also features seven fan headers to support efficient cooling, and offers additional USB connectivity through expansion, including two USB 3.2 Gen 1 connectors and three USB 2.0 connectors. The board includes a TPM connector for added security, but does not support mSATA or U.2 sockets.

Expansion slots:

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

The ASRock B850 Pro-A motherboard is equipped with one PCIe 5.0 x16 slot and one PCIe 4.0 x16 slot for high-speed graphics cards or expansion cards. However, it does not include any PCIe x1, PCIe x4, or PCIe x8 slots, nor does it support PCIe 3.0 x16 or PCIe 2.0 x16 slots, making it suitable primarily for high-bandwidth devices that require PCIe 4.0 or 5.0 speeds.

Audio:

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

The ASRock B850 Pro-A motherboard supports 7.1 audio channels for high-quality sound output. It features three audio connectors for connecting various audio devices, but does not include an S/PDIF Out port for digital audio output.

Storage:

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

The ASRock B850 Pro-A motherboard supports several RAID configurations, including RAID 1, RAID 10, and RAID 0, allowing for various levels of data redundancy and performance. However, it does not support RAID 5 or RAID 0+1, limiting some options for data protection and redundancy.

Final Verdict

The ASRock B850 Pro-A motherboard offers a strong foundation for high-performance builds, particularly for users who need robust memory support and flexibility in storage configurations with its multiple M.2 sockets and RAID 1, 10, and 0 support. Its numerous fan headers make it a solid choice for those planning to build systems with demanding cooling needs. However, it lacks integrated Wi-Fi, Bluetooth, and support for higher-end RAID options like RAID 5, which may limit its appeal to some users. Overall, this motherboard is well-suited for enthusiasts focused on power, performance, and expandability in their desktop systems.