ASRock B850 Steel Legend WiFi
Asus ROG Strix B850-A Gaming WiFi

ASRock B850 Steel Legend WiFi Asus ROG Strix B850-A Gaming WiFi

Overview

Welcome to our in-depth spec comparison between the ASRock B850 Steel Legend WiFi and the Asus ROG Strix B850-A Gaming WiFi, two AM5 motherboards built on the B850 chipset and packed with Wi-Fi 7 and Bluetooth 5.4. While they share a strong common foundation, they diverge in meaningful ways across memory capacity, rear port selection, internal connectors, and audio quality — making the choice between them far from straightforward.

Common Features

  • Both boards use the AM5 CPU socket.
  • Both boards feature the B850 chipset.
  • Both boards have an ATX form factor.
  • Wi-Fi is supported on both boards, covering Wi-Fi 4, Wi-Fi 5, Wi-Fi 6, Wi-Fi 6E, and Wi-Fi 7.
  • Bluetooth 5.4 is available on both boards.
  • Both boards include an HDMI 2.1 output.
  • Both boards support overclocked RAM speeds up to 8000 MHz.
  • Both boards have 4 memory slots and 2 memory channels.
  • DDR5 memory is used on both boards.
  • ECC memory is not supported on either board.
  • Both boards have 2 USB 3.2 Gen 2 ports (USB-A) on the rear.
  • Neither board includes USB 3.2 Gen 1 (USB-C), USB 4, or Thunderbolt ports.
  • Both boards have 1 RJ45 port.
  • Both boards provide 4 USB 2.0 ports through expansion headers.
  • Both boards have 6 fan headers.
  • Both boards include 4 M.2 sockets.
  • Neither board has U.2 or mSATA connectors.
  • Both boards offer 7.1 audio channels with 2 audio connectors and an S/PDIF Out port.
  • Both boards include 1 PCIe 5.0 x16 slot and 1 PCIe 4.0 x16 slot.
  • RAID 0, RAID 1, and RAID 10 are supported on both boards.

Main Differences

  • Easy BIOS reset is available on the Asus ROG Strix B850-A Gaming WiFi but not on the ASRock B850 Steel Legend WiFi.
  • Maximum memory capacity is 256 GB on the ASRock B850 Steel Legend WiFi and 192 GB on the Asus ROG Strix B850-A Gaming WiFi.
  • USB 3.2 Gen 1 ports (USB-A) count is 3 on the ASRock B850 Steel Legend WiFi and 4 on the Asus ROG Strix B850-A Gaming WiFi.
  • USB 3.2 Gen 2 ports (USB-C) count is 2 on the ASRock B850 Steel Legend WiFi and 1 on the Asus ROG Strix B850-A Gaming WiFi.
  • USB 2.0 rear ports count is 4 on the ASRock B850 Steel Legend WiFi and 2 on the Asus ROG Strix B850-A Gaming WiFi.
  • A USB 3.2 Gen 2x2 port is present on the Asus ROG Strix B850-A Gaming WiFi but not available on the ASRock B850 Steel Legend WiFi.
  • A DisplayPort output is present on the Asus ROG Strix B850-A Gaming WiFi but not available on the ASRock B850 Steel Legend WiFi.
  • USB 3.2 Gen 1 expansion ports count is 4 on the ASRock B850 Steel Legend WiFi and 2 on the Asus ROG Strix B850-A Gaming WiFi.
  • SATA 3 connector count is 4 on the ASRock B850 Steel Legend WiFi and 2 on the Asus ROG Strix B850-A Gaming WiFi.
  • A TPM connector is present on the ASRock B850 Steel Legend WiFi but not available on the Asus ROG Strix B850-A Gaming WiFi.
  • The audio signal-to-noise ratio (DAC) is 130 dB on the ASRock B850 Steel Legend WiFi and 120 dB on the Asus ROG Strix B850-A Gaming WiFi.
  • RAID 5 support is present on the Asus ROG Strix B850-A Gaming WiFi but not available on the ASRock B850 Steel Legend WiFi.
Specs Comparison
ASRock B850 Steel Legend WiFi

ASRock B850 Steel Legend WiFi

Asus ROG Strix B850-A Gaming WiFi

Asus ROG Strix B850-A Gaming WiFi

General info:
CPU socket AM5 AM5
chipset B850 B850
form factor ATX ATX
release date January 2025 January 2025
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be) Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
Has Bluetooth
Bluetooth version 5.4 5.4
HDMI version HDMI 2.1 HDMI 2.1
Easy to overclock
has RGB lighting
Easy to reset BIOS
Has dual BIOS
has aptX
CPU sockets 1 1
Has integrated graphics
warranty period 3 years 3 years
height 244 mm 244 mm
width 305 mm 305 mm
Has integrated CPU

At a high level, the ASRock B850 Steel Legend WiFi and the Asus ROG Strix B850-A Gaming WiFi are built on virtually identical foundations: both use the AM5 socket with a B850 chipset, share the standard ATX form factor (244 × 305 mm), and offer the same modern connectivity stack — Wi-Fi 7, Bluetooth 5.4, and HDMI 2.1. Both support overclocking, feature RGB lighting, include a dual BIOS safety net, and carry a 3-year warranty. For the vast majority of build considerations in this category, these two boards are evenly matched.

The one meaningful differentiator here is easy BIOS reset: the ROG Strix B850-A supports it, while the Steel Legend does not. In practice, this matters most during hands-on troubleshooting — particularly when experimenting with overclocking or recovering from a failed POST. A dedicated reset mechanism (typically a physical button or a simplified one-step process) lets users recover without disassembling the system or clearing the CMOS manually, which can be a genuine time-saver, especially for less experienced builders.

Overall, the specs in this group are nearly a dead heat, but the Asus ROG Strix B850-A holds a modest practical edge due to its easier BIOS reset capability — a small but real convenience advantage for anyone who anticipates frequent BIOS experimentation or values a more forgiving setup experience.

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 B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi offer similar memory capabilities. Both support DDR5 memory with a maximum of 4 memory slots and dual memory channels. They also support an overclocked RAM speed of 8000 MHz. However, there is a difference in maximum memory capacity. The ASRock B850 Steel Legend WiFi can handle up to 256GB of RAM, while the Asus ROG Strix B850-A Gaming WiFi supports a maximum of 192GB of RAM.

Neither motherboard supports ECC memory, and both have identical memory channel configurations. While both products share the same DDR memory version (DDR5), the ASRock model stands out with its higher maximum memory capacity.

Overall, the key distinction between the two motherboards in this memory group is the ASRock B850 Steel Legend WiFi’s support for a higher total memory amount.

Ports:
USB 3.2 Gen 2 ports (USB-A) 2 2
USB 3.2 Gen 1 ports (USB-A) 3 4
USB 3.2 Gen 2 ports (USB-C) 2 1
USB 3.2 Gen 1 ports (USB-C) 0 0
USB 2.0 ports 4 2
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 0 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 B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi have several similarities and differences in their port offerings. Both motherboards include USB 3.2 Gen 2 and USB 3.2 Gen 1 ports (USB-A), with the ASRock offering 2 USB 3.2 Gen 2 and 3 USB 3.2 Gen 1 ports, while the Asus provides 2 USB 3.2 Gen 2 and 4 USB 3.2 Gen 1 ports. The ASRock has 2 USB 3.2 Gen 2 ports (USB-C), whereas the Asus only includes 1 USB 3.2 Gen 2 port (USB-C), but it offers 1 USB 3.2 Gen 2x2 port, a feature absent in the ASRock model.

In terms of other connectivity, both motherboards have HDMI outputs, but the Asus model also includes DisplayPort outputs, which the ASRock lacks. Both boards feature 1 RJ45 Ethernet port. The ASRock offers 4 USB 2.0 ports, while the Asus has only 2. Neither product includes Thunderbolt ports, eSATA ports, DVI outputs, or PS/2 ports. Both lack VGA connectors.

Overall, the key distinctions in the port configurations are the additional DisplayPort outputs and USB 3.2 Gen 2x2 support on the Asus ROG Strix B850-A Gaming WiFi, along with the difference in the number of USB 2.0 ports and USB-C offerings.

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

The ASRock B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi differ in several key connectors. Both motherboards offer 4 M.2 sockets, 6 fan headers, and 4 USB 2.0 ports (through expansion). However, the ASRock model provides 4 USB 3.2 Gen 1 ports (through expansion) and 4 USB 3.0 ports (through expansion), while the Asus model includes fewer USB ports in these categories, with 2 USB 3.2 Gen 1 ports and 2 USB 3.0 ports (through expansion).

The ASRock board also includes 4 SATA 3 connectors, while the Asus has only 2. Additionally, the ASRock model features a TPM connector, which the Asus does not offer. Neither motherboard includes U.2 or mSATA connectors, and both lack SATA 2 connectors.

Overall, the ASRock B850 Steel Legend WiFi offers more expansion options with a greater number of USB ports, SATA 3 connectors, and the inclusion of a TPM connector, while the Asus ROG Strix B850-A Gaming WiFi offers fewer options in these areas.

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

The ASRock B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi have identical configurations when it comes to expansion slots. Both motherboards feature 1 PCIe 4.0 x16 slot and 1 PCIe 5.0 x16 slot. Neither motherboard includes PCIe 3.0 x16 slots, PCIe x1 slots, PCI slots, PCIe 2.0 x16 slots, PCIe x4 slots, or PCIe x8 slots.

In summary, both products provide the same selection of expansion slots, with no differences in the types or quantities of available slots between the two motherboards.

Audio:
Signal-to-Noise ratio (DAC) 130 dB 120 dB
audio channels 7.1 7.1
Has S/PDIF Out port
audio connectors 2 2

The ASRock B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi both offer 7.1 audio channels, ensuring high-quality sound output. The ASRock model has a slightly higher Signal-to-Noise ratio (SNR) at 130 dB, compared to the Asus model's 120 dB. Both motherboards are equipped with S/PDIF Out ports, and both feature 2 audio connectors.

Overall, the primary difference between the two in this category is the Signal-to-Noise ratio, with the ASRock board having a higher value, indicating a potentially cleaner audio output.

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

The ASRock B850 Steel Legend WiFi and Asus ROG Strix B850-A Gaming WiFi have similar RAID support but with some differences. Both motherboards support RAID 1 (mirroring) and RAID 10 (1+0, a combination of mirroring and striping). However, the ASRock model does not support RAID 5 (striped with parity), whereas the Asus model does. Additionally, neither motherboard supports RAID 0+1 (a combination of RAID 0 and RAID 1).

In summary, the ASRock B850 Steel Legend WiFi offers RAID 1 and RAID 10 support, while the Asus ROG Strix B850-A Gaming WiFi provides the same along with additional RAID 5 support.

Comparison Summary & Verdict

Both boards are well-matched at their core, sharing PCIe 5.0 support, four M.2 slots, and Wi-Fi 7 connectivity, but their differences point clearly to distinct audiences. The ASRock B850 Steel Legend WiFi stands out with a higher maximum memory capacity of 256 GB, a superior 130 dB audio SNR, more SATA 3 connectors, additional USB 3.2 Gen 2 Type-C ports, and a TPM connector — making it the stronger pick for power users, content creators, and those building storage-heavy or security-conscious systems. The Asus ROG Strix B850-A Gaming WiFi, on the other hand, offers a DisplayPort output, a USB 3.2 Gen 2x2 port, an easy BIOS reset button, and RAID 5 support, appealing more to gamers and enthusiasts who value display flexibility, convenient system maintenance, and advanced storage configurations.

ASRock B850 Steel Legend WiFi
Buy ASRock B850 Steel Legend WiFi if...

Buy the ASRock B850 Steel Legend WiFi if you need maximum memory capacity of 256 GB, superior audio quality with a 130 dB SNR, more SATA ports, or a TPM connector for security-focused builds.

Asus ROG Strix B850-A Gaming WiFi
Buy Asus ROG Strix B850-A Gaming WiFi if...

Buy the Asus ROG Strix B850-A Gaming WiFi if you want a DisplayPort output, a USB 3.2 Gen 2x2 port, RAID 5 support, or the convenience of an easy BIOS reset button.