Asus B850M AYW Gaming Wi-Fi
Asus Prime B850M-K

Asus B850M AYW Gaming Wi-Fi Asus Prime B850M-K

Common Features

  • Both products have an AM5 CPU socket.
  • Both products use a B850 chipset.
  • Both products have a Micro-ATX form factor.
  • Both products support HDMI 2.1.
  • Both products can be easily overclocked.
  • Both products feature RGB lighting.
  • Both products do not have an easy BIOS reset.
  • Both products have dual BIOS.
  • Both products support up to 128GB of memory.
  • Both products support DDR5 memory.
  • Both products have 2 memory slots.
  • Both products support 2 memory channels.
  • Both products support overclocked RAM speeds up to 8400 MHz.
  • Both products do not support ECC memory.
  • Both products have 2 USB 3.2 Gen 2 ports (USB-A).
  • Both products have 2 USB 3.2 Gen 1 ports (USB-A).
  • Both products have 4 USB 2.0 ports.
  • Both products have 2 USB 3.2 Gen 1 ports through expansion.
  • Both products have 4 fan headers.
  • Both products support RAID 1, RAID 10, and RAID 5.

Main Differences

  • Asus B850M AYW Gaming Wi-Fi supports Wi-Fi, whereas Asus Prime B850M-K does not.
  • Asus B850M AYW Gaming Wi-Fi has Bluetooth support, while Asus Prime B850M-K lacks Bluetooth.
  • Asus B850M AYW Gaming Wi-Fi does not have DisplayPort output, but Asus Prime B850M-K does.
  • Asus B850M AYW Gaming Wi-Fi does not have a TPM connector, while Asus Prime B850M-K includes a TPM connector.
  • Asus B850M AYW Gaming Wi-Fi does not have a DisplayPort output, but Asus Prime B850M-K does.
Specs Comparison
Asus B850M AYW Gaming Wi-Fi

Asus B850M AYW Gaming Wi-Fi

Asus Prime B850M-K

Asus Prime B850M-K

General info:
CPU socket AM5 AM5
chipset B850 B850
form factor Micro-ATX Micro-ATX
release date April 2025 April 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 221 mm 221 mm
width 244 mm 244 mm
Has integrated CPU

The Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K both share the same CPU socket type (AM5) and chipset (B850), and they also come in the same Micro-ATX form factor. However, the Asus B850M AYW Gaming Wi-Fi supports Wi-Fi and Bluetooth, while the Asus Prime B850M-K does not provide these features. Both motherboards feature HDMI 2.1 for video output.

In terms of overclocking, both products are easy to overclock, and they both have RGB lighting. Additionally, they both have dual BIOS and a single CPU socket. Neither motherboard has integrated graphics or an integrated CPU. The Asus B850M AYW Gaming Wi-Fi has a 3-year warranty period, which is the same as the warranty period for the Asus Prime B850M-K.

Both motherboards have the same physical dimensions, measuring 221 mm in height and 244 mm in width. When it comes to resetting the BIOS, neither motherboard has an easy reset option.

Memory:
maximum memory amount 128GB 128GB
overclocked RAM speed 8400 MHz 8400 MHz
memory slots 2 2
DDR memory version 5 5
memory channels 2 2
Supports ECC memory

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K offer the same maximum memory amount of 128GB, with the same number of memory slots (2) and memory channels (2). Both motherboards also support DDR5 memory version and have the same overclocked RAM speed of 8400 MHz.

Neither motherboard supports ECC (Error-Correcting Code) memory, as this feature is not included in the specs for either model.

Ports:
USB 3.2 Gen 2 ports (USB-A) 2 2
USB 3.2 Gen 1 ports (USB-A) 2 2
USB 3.2 Gen 2 ports (USB-C) 0 0
USB 3.2 Gen 1 ports (USB-C) 0 0
USB 2.0 ports 4 4
USB 3.2 Gen 2x2 ports 0 0
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

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K offer the same number of USB 3.2 Gen 2 (USB-A) ports (2), USB 3.2 Gen 1 (USB-A) ports (2), and USB 2.0 ports (4). They also both lack USB Type-C, USB 3.2 Gen 2x2, USB 4, and Thunderbolt ports. Additionally, both motherboards feature an HDMI output, but neither has a VGA connector, DVI output, or PS/2 ports.

The primary difference between the two is in the video output options: the Asus B850M AYW Gaming Wi-Fi has no DisplayPort output, while the Asus Prime B850M-K does provide one DisplayPort output. Both motherboards come with a single RJ45 port for network connectivity.

In summary, the two boards are similar in terms of USB ports and most video outputs, with the main distinction being the presence of DisplayPort on the Asus Prime B850M-K.

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

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K provide the same number of USB 3.2 Gen 1 ports (through expansion) (2), USB 2.0 ports (through expansion) (4), USB 3.0 ports (through expansion) (2), and SATA 3 connectors (4). They also feature 4 fan headers and 2 M.2 sockets. Additionally, neither motherboard has U.2 or SATA 2 connectors, and both lack an mSATA connector.

The key difference between the two models is that the Asus B850M AYW Gaming Wi-Fi does not include a TPM connector, while the Asus Prime B850M-K does have a TPM connector, which could be useful for additional security features.

Overall, the two motherboards are quite similar in their connector options, with the exception of the presence of a TPM connector on the Asus Prime B850M-K.

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

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K come with 1 PCIe 4.0 x16 slot and 1 PCIe 5.0 x16 slot, with no PCIe 3.0 x16, PCIe 2.0 x16, PCIe x4, PCIe x8, PCI, or PCIe x1 slots available on either board. The two motherboards share the same configuration in this regard, offering similar expansion slot options.

In summary, the expansion slots on both motherboards are identical, with a focus on PCIe 4.0 and PCIe 5.0 for high-speed graphics or other PCIe-based expansion cards.

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

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K feature 7.1 audio channels, providing high-quality surround sound support. Additionally, neither motherboard includes an S/PDIF Out port for digital audio output. Both models also have 3 audio connectors for standard audio input and output devices.

In summary, the audio features of both motherboards are identical, offering the same number of channels, connectors, and lack of S/PDIF Out support.

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

Both the Asus B850M AYW Gaming Wi-Fi and the Asus Prime B850M-K support the same RAID configurations: RAID 1, RAID 10 (1+0), RAID 5, and RAID 0. Neither motherboard supports RAID 0+1, as this feature is not included in either model.

In summary, the storage capabilities for both motherboards are identical, with both offering a range of RAID options for data redundancy and performance improvements.

Comparison Summary

This is a specification comparison between Asus B850M AYW Gaming Wi-Fi and Asus Prime B850M-K. Both products share a Micro-ATX form factor, support up to 128GB of memory, and feature dual BIOS. The Asus B850M AYW Gaming Wi-Fi offers Wi-Fi and Bluetooth support, which are not present on the Asus Prime B850M-K. Additionally, the Asus B850M AYW Gaming Wi-Fi lacks a DisplayPort output, unlike the Asus Prime B850M-K. The Asus B850M AYW Gaming Wi-Fi also does not have a TPM connector, which is included on the Asus Prime B850M-K.