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ASUS ROG Strix B850-G Gaming WiFi S mATX motherboard, black PCB with silver heatsinks and RGB lighting

ASUS

ASUS ROG Strix B850-G Gaming WiFi S AMD motherboard

SKU CH-ETFQ-KNPRB

A compact AM5 motherboard with DDR5 support up to 256GB, one PCIe 5.0 x16 slot, and WiFi7 for Ryzen 7000, 8000 and 9000 series processors

  • CPU Socket TypeAM5
  • Supports AMD Ryzen 9000, 8000 and 7000 series CPUs
  • 4 DDR5 DIMM slots deliver up to 256 GB memory
  • PCIe 5.0 x16 slot enables latest graphics cards
  • WiFi7 provides fast wireless connectivity
  • USB 20 Gbps Type-C port for high-speed peripherals

Socket AM5 mATX board

This ASUS ROG Strix motherboard uses the AMD AM5 socket in a micro-ATX layout. It is built for compact gaming PCs or workstations that need full Ryzen 9000, 8000 and 7000 series support without a full-size case.

Sustained-load thermal behaviour

The board delivers one PCIe 5.0 x16 slot wired straight to the CPU for a graphics card or high-speed add-in card. Under continuous heavy compute or gaming loads the VRM and chipset heatsinks keep power delivery stable without throttling the attached Ryzen processor.

DDR5 memory ceiling

Four DIMM slots accept DDR5 modules up to a combined 256 GB capacity. That ceiling is set by the memory controller in the supported Ryzen CPUs, so builders planning larger memory arrays would need a different platform.

Highlights

  • Supports AMD Ryzen 9000, 8000 and 7000 series CPUs
  • 4 DDR5 DIMM slots deliver up to 256 GB memory
  • PCIe 5.0 x16 slot enables latest graphics cards
  • WiFi7 provides fast wireless connectivity
  • USB 20 Gbps Type-C port for high-speed peripherals

Specifications

CPU Socket TypeAM5

Questions about this item

How much power does the VRM draw under sustained load on the B850-G Gaming WiFi S?

The board uses a 16-phase VRM design with heatsinks to manage heat during long sessions.

What memory kits are required to reach the 256 GB limit on this motherboard?

Four DDR5 DIMMs are needed to populate all slots and reach the 256 GB maximum capacity.

Will my existing PCIe 4.0 graphics card run at full speed in the PCIe 5.0 x16 slot?

Yes, the slot is backward compatible and the card will operate at PCIe 4.0 speeds.

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