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Head to head · 2 products

PRIME X399-A vs ROG STRIX B650-A GAMING WIFI

Verified specs side by side. The green tick marks the better value on each measurable row.

Comparing 2 products
PRIME X399-A
PRIME X399-A—Score pending
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ROG STRIX B650-A GAMING WIFI
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The short verdict

Scores pending

We haven’t scored these yet. Use the measured differences and full specs below.

PRIME X399-A
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ROG STRIX B650-A GAMING WIFI
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PRIME X399-A
    Full specs →
    ROG STRIX B650-A GAMING WIFI
      Full specs →
      At a glance

      Key differences

      Measured differences only. Ties and tiny gaps are left out.
      Full specs

      Side-by-side specifications

      Performance5 differences
      Audio chip
      Realtek S1220A
      Realtek ALC4080
      Compatible processor series
      AMD Ryzen Threadripper 1000 Series, AMD Ryzen Threadripper 2000 Series
      AMD Ryzen™ 7
      Motherboard chipset
      AMD X399
      AMD B650
      Chipset
      AMD X399
      AMD B650
      Processor socket
      Socket TR4
      Socket AM5
      Connectivity8 differences
      Number of chassis fan connectors
      3
      4
      Number of SATA III connectors
      6
      4
      Parallel processing technology support
      2-Way CrossFireX · 2-Way SLI · 3-Way CrossFireX
      Not supported
      Supported memory clock speeds
      2133 · 2400 · 2666
      4800 · 5000 · 5200
      Supported memory types
      DDR4-SDRAM
      DDR5-SDRAM
      USB 2.0 connectors
      2
      4
      USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
      1
      3
      Windows operating systems supported
      Windows 10 Education x64 · Windows 10 Enterprise x64 · Windows 10 Home x64
      Windows 11 x64
      General8 differences
      Component for
      PC
      PC
      Ethernet interface type
      Gigabit Ethernet
      2.5 Gigabit Ethernet
      Ethernet LAN
      Yes
      Yes
      Form Factor
      Extended ATX
      ATX
      LAN controller
      Intel® I211-AT
      Intel I225-V
      Manufacturer Sku
      90MB0V80-M0EAY0
      90MB1BP0-M0EAY0
      Memory Channels
      Quad-channel
      Dual-channel
      Model Number
      PRIME X399-A
      ROG STRIX B650-A GAMING WIFI
      Motherboard form factor
      Extended ATX
      ATX
      Number of memory slots
      8
      4
      Where to buy

      Specs verified against manufacturer data. Prices in USD before tax; we may earn a commission from qualifying purchases.

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