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ATX motherboard with dark heatsinks and white accents

ASUS

ASUS ROG STRIX B850-A GAMING WIFI S AMD motherboard 14+2+2 power stages DDR5 AEMP 2.5G LAN WiFi 7 Q-Antenna

SKU CH-RPBF-RAMM2

ATX motherboard for AMD Ryzen 7000, 8000 and 9000 series with 14+2+2 80A power stages, DDR5 AEMP, 2.5G LAN and WiFi 7

  • Ready for AI workloads with robust 14+2+2 power stages rated 80A each
  • Supports Ryzen 9000 8000 7000 series on AMD AM5 socket with B850 chipset
  • DDR5 memory up to 256GB with AEMP and EXPO profiles for easy tuning
  • One PCIe 5.0 M.2 slot plus three PCIe 4.0 M.2 slots all heatsinked
  • WiFi 7 with Q-Antenna and 2.5G LAN plus AI Networking II for smart traffic control

AM5 Socket for Ryzen 7000, 8000, 9000 Series

This ATX motherboard uses the AMD B850 chipset and an AM5 socket supporting Ryzen 7000, 8000 and 9000 series desktop processors. It delivers a 14+2+2 power stage design rated for 80A per stage with dual 8-pin ProCool connectors, substantial VRM heatsinks linked by thermal pads, and an integrated I/O cover. Connectivity includes WiFi 7 with a Q-Antenna, 2.5G LAN, USB 20Gbps Type-C, and four M.2 slots.

Builders who need four M.2 slots and WiFi 7

The board suits builders who want four M.2 sockets — one PCIe 5.0 and three PCIe 4.0 — all with dedicated cooling, plus WiFi 7 and 2.5G LAN in a single ATX package. It also fits users who value AI-assisted setup through ASUS AI Advisor and AI Networking II. Buyers who require more than four M.2 sockets or a different wireless standard should consider other options.

DDR5 support up to 8000+ MT/s with AEMP

Four DIMM slots accept up to 256GB of DDR5 and support speeds beyond 8000 MT/s when overclocked with compatible Ryzen 7000, 8000 or 9000 series CPUs. ASUS Enhanced Memory Profile (AEMP) and AMD EXPO profiles simplify memory tuning for higher data rates. This memory ceiling is the key figure to verify against your chosen processor and kit.

商品特色

  • Ready for AI workloads with robust 14+2+2 power stages rated 80A each
  • Supports Ryzen 9000 8000 7000 series on AMD AM5 socket with B850 chipset
  • DDR5 memory up to 256GB with AEMP and EXPO profiles for easy tuning
  • One PCIe 5.0 M.2 slot plus three PCIe 4.0 M.2 slots all heatsinked
  • WiFi 7 with Q-Antenna and 2.5G LAN plus AI Networking II for smart traffic control

商品規格

本商品目前尚未公佈規格。

商品問答

How do I install the CPU into the AM5 socket, and what is the step people get wrong?

Lift the retention arm, align the triangle on the processor with the socket corner, place it gently without pressure, then lower and lock the arm; the common mistake is pressing the chip down before the arm is fully secured.

What maintenance or replacement will the VRM cooling need later?

The massive heatsinks use high-conductivity thermal pads between the VRMs and the fin stack; after several years the pads can dry out, so replacing them with fresh pads of the same thickness restores full thermal transfer.

What limit shows up first under sustained heavy load on the 14+2+2 power stages?

Each stage is rated for 80A, so the VRM thermal capacity of the bridged heatsink array becomes the limiting factor before the electrical rating is reached during prolonged all-core workloads.

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