Compare Detail

• PRIME X399-A
  Model
  PRIME B550M-K
  90MB14V0-M0EAY0
• 8 Channels
  Audio channels
  7.1 Channels
• Realtek ALC S1220A
  Audio chipset
  Realtek ALC887
• AMD X399
  Chipset
  AMD B550
• Yes
  Crossfire support
  No
• Yes
  Ecc ram support
  Yes
• EATX
  Form factor
  Micro ATX
• Intel i211AT
  Lan chipset
  Realtek RTL8111H
• 2242 / 2260 / 2280 - M Key
  2242 / 2260 / 2280 / 22110 - M Key
  M2 devices support
  2242 / 2260 / 2280 / 22110 - M Key
  2242 / 2260 / 2280 - M Key
• 2
  M2 ports
  2
• 10/100/1000Mbps
  Max lan speed
  10/100/1000Mbps
• 128 GB
  Maximum supported ram
  128GB
• 2
  Onboard usb 20
  2
• 2
  Onboard usb 32 gen 1
  1
• 1
  Onboard usb 32 gen 2
  0
• 4
  Pci express x16 slots
  1
• 1
  Pci express x1 slots
  2
• 1
  Pci express x4 slots
  0
• Yes
  Raid support
  Yes
• 8
  Ram slots
  4
• August 2017
  Release date
  June 2020
• 6
  Sata 6 gbps ports
  4
• Yes
  Sli support
  No
• sTR4
  Socket
  AM4
• 2133Mhz
  2400Mhz
  2666Mhz
  2800Mhz
  3000Mhz
  3200Mhz
  Supported memory
  2133Mhz
  2400Mhz
  2666Mhz
  2800Mhz
  3000Mhz
  3200Mhz
  3333Mhz
  3466Mhz
  3600Mhz
  3733Mhz
  3866Mhz
  4000Mhz
  4133Mhz
  4266Mhz
  4400Mhz
  4600Mhz
• No
  Wireless lan
  No