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Compare GIGABYTE B840M D3HP vs B550 AORUS Elite AX

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  3. GIGABYTE B840M D3HP 🆚 Gigabyte B550 AORUS Elite AX
GIGABYTE B840M D3HP and Gigabyte B550 AORUS Elite AX are both motherboards with the same PCI-Express x1 Slots (1), SATA 6 Gbps Ports (4) and M.2 Ports (2). The main differences are in Socket, Form factor, Chipset and Supported Memory.
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GIGABYTE B840M D3HP 8+2+2 Phases VRM DDR5 8200MHz 2x PCIe 4.0 M.2 1GbE LAN USB 3.2 Gen 2 Micro ATX
GIGABYTE B840M D3HP
Gigabyte B550 AORUS Elite AX PCIe4.0 DDR4 USB3.2 Gen 1 Intel WiFi 6 2xM.2 2.5 GbE ATX
Gigabyte B550 AORUS Elite AX
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In Stock
$259.27
Last updated 34 minutes ago.
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$166.99
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$169.99
Out of Stock
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$203.38
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Brand
GIGABYTE
Brand
Gigabyte
Model
B840M D3HP
Model
B550 AORUS Elite AX
Release Date
📅 February 2026
Release Date
📅 August 2020
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★☆
(15 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
AM5
Socket
AM4
Form factor
Micro ATX
Form factor
ATX
Chipset
AMD B840
Chipset
AMD B550
Supported Memory
DDR5
5600Mhz 5800Mhz 6000Mhz 6200Mhz 6400Mhz 6600Mhz 6800Mhz 7000Mhz 7200Mhz 7400Mhz 7600Mhz 7800Mhz 7900Mhz 7950Mhz 8000Mhz 8200Mhz
Supported Memory
DDR4
2133Mhz 2400Mhz 2666Mhz 2933Mhz 3200Mhz 3333Mhz 3600Mhz 4000Mhz 4400Mhz 4600Mhz 4733Mhz
* 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
Yes
* ECC memory support also depends on the CPU memory controller
Audio Chipset
-
Audio Chipset
Realtek ALC1200
Audio Channels
-
Audio Channels
2/4/5.1/7.1-channel
Support for S/PDIF Out
LAN Chipset
-
LAN Chipset
Realtek 2.5GbE LAN chip
Max LAN Speed
-
Max LAN Speed
10/100/1000/2500Mbps
SLI Support
No
SLI Support
No
CrossFire Support
No
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 DisplayPort
  • 1 x HDMI port
  • 2 x SMA antenna connectors (2T2R)
  • 2 x USB 3.2 Gen 2 Type-A ports (red)
  • 4 x USB 3.2 Gen 1 ports
  • 2 x USB 2.0/1.1 ports
  • 1 x Q-Flash Plus button
  • 1 x RJ-45 port
  • 1 x optical S/PDIF Out connector
  • 5 x audio jacks
Wireless LAN
No
Wireless LAN
Yes
Wi-Fi Generation
-
Wi-Fi Generation
6
PCI-Express x16 Slots
1
PCI-Express x16 Slots
3
PCI-Express x4 Slots
0
PCI-Express x4 Slots
0
PCI-Express x1 Slots
1
PCI-Express x1 Slots
1
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
  • 2580 - M Key
  • 2280 - M Key
M.2 Devices support
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
RAM Slots
4
RAM Slots
4
Maximum Supported RAM
256 GB
Maximum Supported RAM
128 GB
Onboard USB 2.0
1
Onboard USB 2.0
2
Onboard USB 3.2 Gen 1
1
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 GIGABYTE B840M D3HP:

  • Newer Product, it was released around 6 years later
  • +128 GB maximum RAM supported
  • +1 Onboard USB 3.2 Gen 2

Buy now

Reasons to buy the Gigabyte B550 AORUS Elite AX:

  • 36% cheaper, you can save $92.28
  • Wireless LAN Integrated
  • +2 Slots PCI-E x16
  • +1 Onboard USB 2.0

Buy now

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