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White mATX motherboard with CPU socket and heatsinks

ASUS

ASUS ROG Strix B850-G Gaming WiFi S AMD motherboard & Ryzen 7 9800X3D CPU Combo

SKU CH-5RB8-QQVSA

Combines an AMD B850 mATX board with DDR5 support up to 256 GB, WiFi 7, PCIe 5.0 x16 and 20 Gbps USB-C with an 8-core Ryzen 7 9800X3D CPU featuring 96 MB L3 cache and 5.2 GHz boost

  • CPU Socket TypeAM5
  • ChipsetAMD B850

Motherboard

Struck-through versions exist but are not stocked here.

CPU + Ryzen 7 9800X3D

  • Ryzen 7 9800X3D delivers low-latency gaming with 2nd-gen 3D V-Cache tech and 96MB L3 cache
  • 8 cores and 16 threads on Zen 5 architecture boost to 5.2 GHz for high frame rates
  • DDR5 memory up to 256 GB across four slots runs at 5600 MT/s for responsive multitasking
  • PCIe 5.0 x16 slot and four M.2 sockets enable fast GPU and storage upgrades
  • WiFi 7 and USB 20 Gbps Type-C provide modern wireless and wired connectivity

AM5 Platform Combo

This bundle pairs an ASUS ROG Strix B850-G Gaming WiFi S motherboard with a Ryzen 7 9800X3D processor. The board uses the AMD B850 chipset on the AM5 socket and supports Ryzen 9000, 8000 and 7000 series CPUs. It is aimed at gamers and enthusiasts who want a ready-to-build foundation with current-generation parts. The combination delivers high frame-rate potential in a compact micro-ATX layout.

White Micro-ATX Build Features

The motherboard offers four DDR5 DIMM slots supporting up to 256 GB of memory. A single PCIe 5.0 x16 slot handles modern graphics cards, while four M.2 sockets provide abundant high-speed storage expansion. Rear I/O includes a USB 20 Gbps Type-C port and WIFI 7 wireless connectivity. The white finish suits clean, light-themed builds without sacrificing ROG Strix durability.

9800X3D Gaming Upgrade

The included Ryzen 7 9800X3D brings eight cores and sixteen threads based on the Zen 5 architecture, with a 5.2 GHz maximum boost clock and 96 MB of L3 cache. Second-generation 3D V-Cache technology reduces latency for competitive gaming workloads. This combo replaces an older AM4 or early AM5 system when the priority is peak 1080p and 1440p frame rates. The processor is unlocked for overclocking and requires a separate cooler.

Highlights

  • Ryzen 7 9800X3D delivers low-latency gaming with 2nd-gen 3D V-Cache tech and 96MB L3 cache
  • 8 cores and 16 threads on Zen 5 architecture boost to 5.2 GHz for high frame rates
  • DDR5 memory up to 256 GB across four slots runs at 5600 MT/s for responsive multitasking
  • PCIe 5.0 x16 slot and four M.2 sockets enable fast GPU and storage upgrades
  • WiFi 7 and USB 20 Gbps Type-C provide modern wireless and wired connectivity

Specifications

BrandASUS
ModelROG Strix B850-G Gaming WiFi S+R7 9800X3D
CPU Socket TypeAM5
ChipsetAMD B850

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What PCIe generation does the x16 slot run at and what bandwidth does that cap the graphics card at?

The board provides one PCIe 5.0 x16 slot so a graphics card is limited to the 5.0 signalling rate.

What case form factor and CPU cooler clearance does the mATX board need?

The mATX board fits standard mATX or ATX cases and uses the AM5 socket so any AM5-compatible cooler will mount.

How is the CPU installed on the AM5 socket and which step is most often missed?

Lift the socket lever, align the triangle on the Ryzen 7 9800X3D with the socket mark, lower the chip without pressure, close and lock the lever — the step most often missed is removing the protective plastic cover from the socket contacts before seating the processor.

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