ASRock B850M Pro RS
Asus TUF Gaming B850M-Plus

ASRock B850M Pro RS Asus TUF Gaming B850M-Plus

Overview

Welcome to our in-depth spec comparison between the ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus, two Micro-ATX motherboards built on the AM5 platform with the B850 chipset. Both boards share a strong foundation of DDR5 support, PCIe 5.0, and overclocking capability, yet they diverge in meaningful ways across USB connectivity, audio output options, and expansion slot configurations. Read on to discover which board aligns best with your build goals.

Common Features

  • Both boards use the AM5 CPU socket.
  • Both boards feature the B850 chipset.
  • Both boards have a Micro-ATX form factor.
  • Neither board includes Wi-Fi support.
  • Neither board includes Bluetooth support.
  • Both boards have an HDMI 2.1 output.
  • Both boards support overclocking.
  • Both boards feature RGB lighting.
  • Both boards support a maximum overclocked RAM speed of 8000 MHz.
  • Both boards have 4 memory slots.
  • Both boards use DDR5 memory.
  • Both boards operate in dual-channel memory mode.
  • Neither board supports ECC memory.
  • Both boards have 4 USB 2.0 ports.
  • Neither board has USB 3.2 Gen 1 USB-C ports.
  • Neither board has USB 4 or Thunderbolt ports.
  • Both boards include 1 DisplayPort output.
  • Both boards provide 4 USB 2.0 headers for expansion.
  • Both boards have 4 SATA 3 connectors.
  • Both boards include 5 fan headers.
  • Both boards have 3 M.2 sockets.
  • Neither board has a mSATA connector.
  • Both boards have 0 SATA 2 connectors.
  • Both boards have 1 PCIe 5.0 x16 slot.
  • Neither board has PCIe 4.0, 3.0, 2.0 x16, PCIe x8, or legacy PCI slots.
  • Both boards support 7.1 audio channels.
  • Both boards support RAID 0, RAID 1, and RAID 10.
  • Neither board supports RAID 0+1.

Main Differences

  • Maximum memory capacity is 256 GB on ASRock B850M Pro RS and 192 GB on Asus TUF Gaming B850M-Plus.
  • USB 3.2 Gen 2 USB-A ports count is 1 on ASRock B850M Pro RS and 3 on Asus TUF Gaming B850M-Plus.
  • USB 3.2 Gen 1 USB-A ports count is 2 on ASRock B850M Pro RS and 4 on Asus TUF Gaming B850M-Plus.
  • USB 3.2 Gen 2 USB-C port is present on ASRock B850M Pro RS but not available on Asus TUF Gaming B850M-Plus.
  • USB 3.2 Gen 2x2 port is present on Asus TUF Gaming B850M-Plus but not available on ASRock B850M Pro RS.
  • USB 3.2 Gen 1 expansion headers count is 4 on ASRock B850M Pro RS and 2 on Asus TUF Gaming B850M-Plus.
  • USB 3.0 expansion headers count is 4 on ASRock B850M Pro RS and 2 on Asus TUF Gaming B850M-Plus.
  • A TPM connector is present on ASRock B850M Pro RS but not available on Asus TUF Gaming B850M-Plus.
  • PCIe x4 slot is present on ASRock B850M Pro RS but not available on Asus TUF Gaming B850M-Plus.
  • PCIe x1 slot is present on Asus TUF Gaming B850M-Plus but not available on ASRock B850M Pro RS.
  • S/PDIF Out port is present on Asus TUF Gaming B850M-Plus but not available on ASRock B850M Pro RS.
  • Audio connectors count is 3 on ASRock B850M Pro RS and 5 on Asus TUF Gaming B850M-Plus.
  • RAID 5 support is available on Asus TUF Gaming B850M-Plus but not available on ASRock B850M Pro RS.
Specs Comparison
ASRock B850M Pro RS

ASRock B850M Pro RS

Asus TUF Gaming B850M-Plus

Asus TUF Gaming B850M-Plus

General info:
CPU socket AM5 AM5
chipset B850 B850
form factor Micro-ATX Micro-ATX
release date January 2025 January 2025
supports Wi-Fi
Has Bluetooth
HDMI version HDMI 2.1 HDMI 2.1
Easy to overclock
has RGB lighting
Easy to reset BIOS
Has dual BIOS
CPU sockets 1 1
Has integrated graphics
warranty period 3 years 3 years
height 244 mm 244 mm
width 244 mm 244 mm
Has integrated CPU

In terms of general characteristics, the ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus are remarkably identical. Both boards share the same AM5 socket and B850 chipset, meaning they target the same generation of AMD processors with the same platform-level feature set. They are both Micro-ATX and measure exactly 244 × 244 mm, so they will fit the same cases and occupy the same motherboard tray footprint.

On the feature side, every boolean spec aligns perfectly: neither board includes Wi-Fi or Bluetooth, both output video via HDMI 2.1, both support overclocking, both carry RGB lighting, both implement a dual BIOS safety net, and neither offers a one-touch BIOS reset button. The absence of wireless connectivity on both means buyers who need Wi-Fi or Bluetooth will have to budget for a separate add-in card or USB adapter regardless of which board they choose — this is a meaningful shared limitation at this price tier.

With a 3-year warranty on each and no distinguishing spec in this entire group, the General Info category results in a complete tie. Neither board holds any advantage here; a purchasing decision will need to rest entirely on specs from other categories such as memory support, connectivity, or audio.

Memory:
maximum memory amount 256GB 192GB
overclocked RAM speed 8000 MHz 8000 MHz
memory slots 4 4
DDR memory version 5 5
memory channels 2 2
Supports ECC memory

The ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus both support DDR5 memory with a maximum memory amount of 256GB and 192GB, respectively. The ASRock B850M Pro RS allows for a higher maximum memory capacity by 64GB. Both motherboards feature 4 memory slots, DDR5 memory, and a dual-channel memory configuration. In terms of overclocking, both motherboards support RAM speeds of up to 8000 MHz.

Neither motherboard supports ECC (Error-Correcting Code) memory. The specifications for memory channels and DDR memory version match across both products, as do the number of memory slots and the overclocked RAM speed. Overall, the main difference between the two boards is the ASRock B850M Pro RS's higher maximum memory capacity of 256GB compared to the Asus TUF Gaming B850M-Plus's 192GB.

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

The ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus both offer similar port configurations, though with a few differences. Both motherboards include one RJ45 port for networking, one DisplayPort output, and an HDMI output for video. Additionally, both support USB Type-C ports, though with varying counts. The ASRock B850M Pro RS has one USB 3.2 Gen 2 USB-A port, two USB 3.2 Gen 1 USB-A ports, one USB 3.2 Gen 2 USB-C port, and four USB 2.0 ports. In contrast, the Asus TUF Gaming B850M-Plus offers three USB 3.2 Gen 2 USB-A ports, four USB 3.2 Gen 1 USB-A ports, and no USB 3.2 Gen 2 USB-C ports.

Additionally, the ASRock B850M Pro RS does not feature any USB 3.2 Gen 2x2 ports, while the Asus TUF Gaming B850M-Plus includes one such port. Both boards lack USB 4, Thunderbolt, eSATA, DVI, PS/2, and VGA connectors. Overall, the key difference in ports between the two is the presence of the USB 3.2 Gen 2x2 port on the Asus TUF Gaming B850M-Plus, as well as the additional USB 3.2 Gen 2 USB-A port on the ASRock B850M Pro RS.

Neither motherboard includes Thunderbolt 3 or 4 ports, and both provide similar video output options with HDMI and DisplayPort. Overall, the differences in port configurations are relatively minor, with both boards offering robust USB support and similar video output features.

Connectors:
USB 3.2 Gen 1 ports (through expansion) 4 2
USB 2.0 ports (through expansion) 4 4
SATA 3 connectors 4 4
fan headers 5 5
USB 3.0 ports (through expansion) 4 2
M.2 sockets 3 3
Has TPM connector
U.2 sockets 0 0
Has mSATA connector
SATA 2 connectors 0 0

The ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus offer similar connectivity options, but there are a few key differences in their expansion and connector configurations. Both motherboards provide four SATA 3 connectors and five fan headers. In terms of USB expansion, the ASRock B850M Pro RS offers more flexibility, with four USB 3.2 Gen 1 ports, four USB 2.0 ports, and four USB 3.0 ports available through expansion. In contrast, the Asus TUF Gaming B850M-Plus has only two USB 3.2 Gen 1 ports and two USB 3.0 ports available through expansion, offering fewer USB options.

Both motherboards include three M.2 sockets, and neither supports U.2 or mSATA connectors. However, the ASRock B850M Pro RS has a TPM connector, while the Asus TUF Gaming B850M-Plus does not. This could be a key differentiator for users seeking TPM functionality for added security or other purposes.

In summary, the ASRock B850M Pro RS offers more USB expansion options and includes a TPM connector, while the Asus TUF Gaming B850M-Plus has fewer USB expansion ports and lacks the TPM connector. Both boards share common features such as the same number of SATA 3 connectors, M.2 sockets, and fan headers.

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

The ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus share similar expansion slot configurations, with both featuring one PCIe 5.0 x16 slot. Neither motherboard has any PCIe 4.0 x16 or PCIe 3.0 x16 slots. The ASRock B850M Pro RS offers one PCIe x4 slot, while the Asus TUF Gaming B850M-Plus provides a PCIe x1 slot. Additionally, the ASRock board does not have any PCIe x8 or PCIe 2.0 x16 slots, while the Asus TUF Gaming B850M-Plus lacks PCIe x4 and PCIe x8 slots, but includes one PCIe x1 slot.

Both motherboards also lack PCI slots entirely. The key difference between the two products in terms of expansion slots is the presence of the PCIe x4 slot on the ASRock B850M Pro RS, which the Asus TUF Gaming B850M-Plus does not include. However, the Asus TUF Gaming B850M-Plus offers a PCIe x1 slot that the ASRock board does not.

Overall, both motherboards support PCIe 5.0 x16 for high-speed graphics, with the main difference being the ASRock B850M Pro RS's additional PCIe x4 slot and the Asus TUF Gaming B850M-Plus's inclusion of a PCIe x1 slot.

Audio:
audio channels 7.1 7.1
Has S/PDIF Out port
audio connectors 3 5

Both the ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus support 7.1 audio channels, providing high-quality surround sound. However, the two differ in their additional audio features. The ASRock B850M Pro RS does not include an S/PDIF Out port, whereas the Asus TUF Gaming B850M-Plus includes this port for digital audio output. In terms of audio connectors, the ASRock board has three, while the Asus board offers five audio connectors.

Overall, the main differences in the audio configurations between these two motherboards are the presence of the S/PDIF Out port and the greater number of audio connectors on the Asus TUF Gaming B850M-Plus. Both products offer the same 7.1 audio channel support, ensuring a similar level of surround sound experience.

Storage:
Supports RAID 1
Supports RAID 10 (1+0)
Supports RAID 5
Supports RAID 0
Supports RAID 0+1

The ASRock B850M Pro RS and the Asus TUF Gaming B850M-Plus both support RAID 1 and RAID 10 (1+0), allowing for various RAID configurations for improved data redundancy and performance. However, they differ in their support for other RAID levels. The ASRock B850M Pro RS does not support RAID 5, while the Asus TUF Gaming B850M-Plus does. Both motherboards do not support RAID 0+1.

Overall, the key difference is that the Asus TUF Gaming B850M-Plus has additional support for RAID 5, providing more flexibility for users looking to implement this RAID configuration. Both boards, however, share the same support for RAID 1 and RAID 10 (1+0), making them similar in terms of basic storage options.

Comparison Summary & Verdict

After a thorough side-by-side analysis, both boards prove to be capable AM5 contenders, but each serves a distinct type of builder. The ASRock B850M Pro RS stands out with its higher maximum memory capacity of 256 GB, a USB 3.2 Gen 2 USB-C rear port, a TPM connector, and a PCIe x4 slot, making it a stronger choice for productivity-focused or security-conscious users. The Asus TUF Gaming B850M-Plus, on the other hand, wins on USB port density with more USB-A outputs, a USB 3.2 Gen 2x2 port, a richer 5-connector audio setup with S/PDIF Out, RAID 5 support, and an extra PCIe x1 slot, appealing to users who prioritize peripheral connectivity and versatile storage configurations. Neither board includes Wi-Fi or Bluetooth, so both require external adapters for wireless use.

ASRock B850M Pro RS
Buy ASRock B850M Pro RS if...

Buy the ASRock B850M Pro RS if you need a higher maximum memory capacity of 256 GB, a rear USB-C port, or a TPM connector for security and compliance requirements.

Asus TUF Gaming B850M-Plus
Buy Asus TUF Gaming B850M-Plus if...

Buy the Asus TUF Gaming B850M-Plus if you want more USB-A ports, a richer audio setup with S/PDIF Out and 5 audio connectors, or RAID 5 storage support.