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ASUS Prime B660M-A D4 vs Prime B660M-K D4

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Brand
ASUS
Brand
ASUS
Model
  • PRIME B660M-A D4
  • 90MB19K0-MVAAY0
  • 90MB19K0-M1AAY0
Model
  • PRIME B660M-K D4
  • 90MB1950-M0EAY0
Release Date
📅 January 2022
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
★★★★☆
(2 reviews)
User reviews
Price history
View Details ►
Price history
View Details ►
Supported PC parts
Supported PC parts
Socket
LGA1700
Socket
LGA1700
Form factor
Micro ATX
Form factor
Micro ATX
Chipset
Intel B660
Chipset
Intel B660
Supported Memory
DDR4
2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3300Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 4000Mhz 4266Mhz 4400Mhz 4600Mhz 4800Mhz 5000Mhz 5333Mhz
Supported Memory
DDR4
2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3200Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 4000Mhz 4266Mhz 4400Mhz 4600Mhz 4800Mhz 5000Mhz 5333Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support
ECC RAM Support
Audio Chipset
Realtek 7.1 Surround Sound High Definition Audio CODEC*

* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Audio Chipset
-
Audio Channels
7.1 Channels
Audio Channels
7.1 Channels
LAN Chipset
Intel 1Gb Ethernet
LAN Chipset
-
Max LAN Speed
10/100/1000Mbps
Max LAN Speed
10/100/1000Mbps
SLI Support
No
SLI Support
No
CrossFire Support
No
CrossFire Support
No
RAID Support
Yes
RAID Support
Yes
Back I/O Ports
  • 2 x USB 3.2 Gen 2 ports (2 x Type-A)
  • 4 x USB 2.0 ports (4 x Type-A)
  • 1 x DisplayPort
  • 2 x HDMI ports
  • 1 x Intel 1Gb Ethernet port
  • 3 x Audio jacks
  • 1 x PS/2 Keyboard/Mouse combo port
Back I/O Ports
  • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
  • 2 x USB 2.0 ports (2 x Type-A)
  • 1 x D-Sub port
  • 1 x HDMI port
  • 1 x Realtek 1Gb Ethernet port
  • 3 x Audio jacks
  • 1 x PS/2 Keyboard/Mouse combo port
Wireless LAN
No
Wireless LAN
No
PCI-Express x16 Slots
3
PCI-Express x16 Slots
1
PCI-Express x4 Slots
0
PCI-Express x4 Slots
0
PCI-Express x1 Slots
0
PCI-Express x1 Slots
2
SATA 6 Gbps Ports
4
SATA 6 Gbps Ports
4
SATA Express Ports
0
SATA Express Ports
0
M.2 Ports
2
M.2 Ports
2
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 - M Key
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 - M Key
RAM Slots
4
RAM Slots
2
Maximum Supported RAM
128 GB
Maximum Supported RAM
64 GB
Onboard USB 2.0
2
Onboard USB 2.0
2
Onboard USB 3.2 Gen 1
2
Onboard USB 3.2 Gen 1
1
Onboard USB 3.2 Gen 2
1
Onboard USB 3.2 Gen 2
0
Onboard USB 3.2 Gen 2x2
0
Onboard USB 3.2 Gen 2x2
0

What are the differences between ASUS Prime B660M-A D4 and Prime B660M-K D4? Analyze head-to-head all specifications and features to find out the better motherboard.

Comparison and key differences summary

Reasons to pick the ASUS Prime B660M-A D4:

  • +2 Slots PCI-E x16.
  • +2 RAM slots.
  • +64 GB maximum RAM supported.
  • +1 Onboard USB 3.2 Gen 1.
  • +1 Onboard USB 3.2 Gen 2.

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Reasons to pick the ASUS Prime B660M-K D4:

  • 36% cheaper, you can save $79.18.
  • +2 Slots PCI-E x1.

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