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Compare ASUS PRIME X299-DELUXE II vs Prime B450M-A II

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  3. ASUS PRIME X299-DELUXE II 🆚 ASUS Prime B450M-A II
ASUS PRIME X299-DELUXE II and ASUS Prime B450M-A II are both motherboards with the same PCI-Express x1 Slots (2) and Maximum Supported RAM (128 GB). The main differences are in Socket, Form factor, Chipset and Supported Memory.
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ASUS Prime X299-Deluxe II LGA2066 DDR4 M.2 U.2 Thunderbolt 3 USB 3.1 Dual Gigabit LAN 802.11AC WiFi ATX
ASUS PRIME X299-DELUXE II
ASUS Prime B450M-A II AMD NVMe HDMI 2.0b/DVI/D-Sub USB 3.2 Gen 2 BIOS Flashback Aura Sync AM4 Micro ATX
ASUS Prime B450M-A II
Prices
(Change region)
In Stock
+ $29.99 Shipping
$412.61
In Stock
$499.99
Prices
(Change region)
In Stock
$89.99
Out of Stock
+ $39.99 Shipping
$202.87
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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand
ASUS
Brand
ASUS
Model
  • PRIME X299-DELUXE II
  • 90MB0ZB0-M0AAY0
Model
  • Prime B450M-A II
  • 90MB15Z0-M0AAY0
  • 90MB15Z0-MVAAY0
Release Date
📅 October 2018
Release Date
📅 October 2020
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
★★★☆☆
(4 reviews)
User reviews
★★★★★
(3 reviews)
Price history
View Details ►
Price history
View Details ►
Compatible PC parts
Processors ► Memory ► Cases ► CPU Coolers ►
Compatible PC parts
Processors ► Memory ► Cases ► CPU Coolers ►
Socket
LGA2066
Socket
AM4
Form factor
ATX
Form factor
Micro ATX
Chipset
Intel X299
Chipset
AMD B450
Supported Memory
DDR4
2133Mhz 2400Mhz 2666Mhz 3600Mhz 4000Mhz 4200Mhz 4266Mhz
Supported Memory
DDR4
2133Mhz 2400Mhz 2666Mhz 2800Mhz 3000Mhz 3200Mhz 3300Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4400Mhz
* 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
No
ECC RAM Support
No
Audio Chipset
Realtek S1220A
Audio Chipset
Realtek High Definition Audio CODEC
Audio Channels
8 Channels
Audio Channels
7.1 Channels
LAN Chipset
Aquantia AQC-111C
LAN Chipset
Realtek RTL8111H
Max LAN Speed
5Gbps + 10/100/1000Mbps
Max LAN Speed
10/100/1000Mbps
SLI Support
Yes
SLI Support
No
CrossFire Support
Yes
CrossFire Support
No
RAID Support
Yes
RAID Support
Yes
Back Connect
No
Back Connect
No
Back I/O Ports
-
Back I/O Ports
  • 1 x PS/2 keyboard/mouse combo port(s)
  • 1 x DVI-D
  • 1 x D-Sub
  • 1 x HDMI
  • 1 x LAN (RJ45) port(s)
  • 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A)
  • 4 x USB 3.2 Gen 1 (blue) Type-A
  • 3 x Audio jack(s)
  • 1 x BIOS FlashBack Button(s)
Wireless LAN
Yes
Wireless LAN
No
Wi-Fi Generation
5
Wi-Fi Generation
-
PCI-Express x16 Slots
3
PCI-Express x16 Slots
1
PCI-Express x4 Slots
0
PCI-Express x4 Slots
0
PCI-Express x1 Slots
2
PCI-Express x1 Slots
2
SATA 6 Gbps Ports
8
SATA 6 Gbps Ports
6
SATA Express Ports
0
SATA Express Ports
0
M.2 Ports
2
M.2 Ports
1
M.2 Devices support
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
M.2 Devices support
  • 2242 / 2260 / 2280 / 22110 - M Key
RAM Slots
8
RAM Slots
4
Maximum Supported RAM
128 GB
Maximum Supported RAM
128 GB
Onboard USB 2.0
1
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
-

Comparison and key differences summary

⛔ You are comparing motherboards with different sockets. They cannot support the same CPUs. Try to compare motherboards within the same platform.

Reasons to buy the ASUS PRIME X299-DELUXE II:

  • Supports NVIDIA SLI
  • Supports AMD CrossFire
  • Wireless LAN Integrated
  • +2 Slots PCI-E x16
  • +2 Ports SATA 6Gb/s
  • +1 Ports M.2
  • +4 RAM slots
  • +1 Onboard USB 3.2 Gen 1
  • +1 Onboard USB 3.2 Gen 2

Buy now

Reasons to buy the ASUS Prime B450M-A II:

  • 78% cheaper, you can save $322.62
  • Newer Product, it was released around 23 months later
  • Supports the following RAM types: DDR4 4400MHz
  • +1 Onboard USB 2.0

Buy now

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