GIGABYTE A520M DS3H AC (Rev. 1.4) vs GIGABYTE B840M D2H (Rev. 1.1)

Key differences

The GIGABYTE A520M DS3H AC (Rev. 1.4) has 2 more memory slots than the GIGABYTE B840M D2H (Rev. 1.1) (4 vs 2). The GIGABYTE B840M D2H (Rev. 1.1) has 2,867 MHz more supported memory clock speed (max) than the GIGABYTE A520M DS3H AC (Rev. 1.4) (7600 MHz vs 4733 MHz). The GIGABYTE B840M D2H (Rev. 1.1) has 32 GB more maximum internal memory per slot than the GIGABYTE A520M DS3H AC (Rev. 1.4) (64 GB vs 32 GB). Only the GIGABYTE A520M DS3H AC (Rev. 1.4) has Wi-Fi. Processor socket: Socket AM4 on the GIGABYTE A520M DS3H AC (Rev. 1.4), Socket AM5 on the GIGABYTE B840M D2H (Rev. 1.1).

• Processor socket
  • A520M DS3H AC (Rev. 1.4):Socket AM4
  • B840M D2H (Rev. 1.1):Socket AM5
• Supported processor sockets
  • A520M DS3H AC (Rev. 1.4):Socket AM4
  • B840M D2H (Rev. 1.1):Socket AM5
• Supported memory types
  • A520M DS3H AC (Rev. 1.4):DDR4-SDRAM
  • B840M D2H (Rev. 1.1):DDR5-SDRAM
• Number of memory slots
  • A520M DS3H AC (Rev. 1.4):4
  • B840M D2H (Rev. 1.1):2
• ECC сompatibility
  • A520M DS3H AC (Rev. 1.4):ECC & Non-ECC
  • B840M D2H (Rev. 1.1):Non-ECC
• Supported memory clock speed (max)
  • A520M DS3H AC (Rev. 1.4):4733 MHz
  • B840M D2H (Rev. 1.1):7600 MHz
• Maximum internal memory per slot
  • A520M DS3H AC (Rev. 1.4):32 GB
  • B840M D2H (Rev. 1.1):64 GB
• Supported storage drive interfaces
  • A520M DS3H AC (Rev. 1.4):PCI Express 3.0, SATA III
  • B840M D2H (Rev. 1.1):PCI Express 4.0, SATA III