Compare Detail

• PRIME B550M-A/CSM
  Model
  PRIME X399-A
• 7.1 Channels
  Audio channels
  8 Channels
• Realtek ALC887
  Audio chipset
  Realtek ALC S1220A
• 2 x USB 3.2 Gen 2 ports (2 x Type-A)
  4 x USB 3.2 Gen 1 ports (4 x Type-A)
  1 x D-Sub port
  1 x DVI-D port
  1 x HDMI port
  1 x Realtek RTL8111H 1Gb Ethernet port
  3 x Audio jacks
  1 x PS/2 Keyboard/Mouse combo port
  Back io ports
• AMD B550
  Chipset
  AMD X399
• No
  Crossfire support
  Yes
• Yes
  Ecc ram support
  Yes
• Micro ATX
  Form factor
  EATX
• Realtek RTL8111H
  Lan chipset
  Intel i211AT
• 2242 / 2260 / 2280 / 22110 - M Key
  2242 / 2260 / 2280 - M Key
  M2 devices support
  2242 / 2260 / 2280 - M Key
  2242 / 2260 / 2280 / 22110 - M Key
• 2
  M2 ports
  2
• 10/100/1000Mbps
  Max lan speed
  10/100/1000Mbps
• 128 GB
  Maximum supported ram
  128 GB
• 2
  Onboard usb 20
  2
• 1
  Onboard usb 32 gen 1
  2
• 0
  Onboard usb 32 gen 2
  1
• 1
  Pci express x16 slots
  4
• 2
  Pci express x1 slots
  1
• 0
  Pci express x4 slots
  1
• Yes
  Raid support
  Yes
• 4
  Ram slots
  8
• June 2020
  Release date
  August 2017
• 4
  Sata 6 gbps ports
  6
• No
  Sli support
  Yes
• AM4
  Socket
  sTR4
• 2133Mhz
  2400Mhz
  2666Mhz
  2800Mhz
  3000Mhz
  3200Mhz
  3333Mhz
  3466Mhz
  3600Mhz
  3733Mhz
  3866Mhz
  4000Mhz
  4133Mhz
  4266Mhz
  4400Mhz
  4600Mhz
  Supported memory
  2133Mhz
  2400Mhz
  2666Mhz
  2800Mhz
  3000Mhz
  3200Mhz
• No
  Wireless lan
  No