GIGABYTE A520I AC (Rev. 1.4) vs GIGABYTE B840M D2H (Rev. 1.1)

Key differences

The GIGABYTE B840M D2H (Rev. 1.1) has 2,300 MHz more supported memory clock speed (max) than the GIGABYTE A520I AC (Rev. 1.4) (7600 MHz vs 5300 MHz). The GIGABYTE B840M D2H (Rev. 1.1) has 64 GB more maximum internal memory than the GIGABYTE A520I AC (Rev. 1.4) (128 GB vs 64 GB). The GIGABYTE B840M D2H (Rev. 1.1) has 32 GB more maximum internal memory per slot than the GIGABYTE A520I AC (Rev. 1.4) (64 GB vs 32 GB). Only the GIGABYTE A520I AC (Rev. 1.4) has Wi-Fi. Processor socket: Socket AM4 on the GIGABYTE A520I AC (Rev. 1.4), Socket AM5 on the GIGABYTE B840M D2H (Rev. 1.1).

• Processor socket
  • A520I AC (Rev. 1.4):Socket AM4
  • B840M D2H (Rev. 1.1):Socket AM5
• Supported processor sockets
  • A520I AC (Rev. 1.4):Socket AM4
  • B840M D2H (Rev. 1.1):Socket AM5
• Supported memory types
  • A520I AC (Rev. 1.4):DDR4-SDRAM
  • B840M D2H (Rev. 1.1):DDR5-SDRAM
• ECC сompatibility
  • A520I AC (Rev. 1.4):ECC & Non-ECC
  • B840M D2H (Rev. 1.1):Non-ECC
• Supported memory clock speed (max)
  • A520I AC (Rev. 1.4):5300 MHz
  • B840M D2H (Rev. 1.1):7600 MHz
• Maximum internal memory
  • A520I AC (Rev. 1.4):64 GB
  • B840M D2H (Rev. 1.1):128 GB
• Maximum internal memory per slot
  • A520I AC (Rev. 1.4):32 GB
  • B840M D2H (Rev. 1.1):64 GB
• Supported storage drive interfaces
  • A520I AC (Rev. 1.4):PCI Express 3.0, SATA III
  • B840M D2H (Rev. 1.1):PCI Express 4.0, SATA III