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ATX motherboard with CPU installed, silver heatsinks, black PCB, RGB lighting headers

ASUS

ASUS PRIME B850-PLUS WIFI + Ryzen 7 9800X3D AMD motherboard combo

SKU CH-5BYQ-TJPY9

A motherboard and CPU bundle pairing an AM5 board with 8+2+1 phase power, DDR5 support, Wi-Fi 6E, 2.5Gb Ethernet and USB 10Gbps Type-C with an 8-core.

  • CPU Socket TypeAM5

Motherboard PRIME B850-PLUS WIFI

Struck-through versions exist but are not stocked here.

CPU + Ryzen 7 9800X3D

  • Ready-to-build combo with matched Ryzen 7 9800X3D CPU and B850 motherboard
  • Stable power for Ryzen 9000/8000/7000 series via 8+2+1 phase Digi+ VRM design
  • DDR5 performance unlocked through AEMP optimization and extensive UEFI tuning options
  • Fast connectivity with Wi-Fi 6E, 2.5Gb Ethernet and USB 10Gbps Type-C ports
  • CES 2025 Innovation Award honoree featuring 2nd-gen 3D V-Cache for low-latency gaming

Combo for AM5 gaming builds

This bundle pairs the ASUS PRIME B850-PLUS WIFI motherboard with the AMD Ryzen 7 9800X3D processor. The board uses the AMD B850 chipset and AM5 socket to support DDR5 memory. The CPU provides 8 cores and 16 threads with second-generation 3D V-Cache technology for low-latency gaming performance.

Thermals and power delivery

An 8+2+1 phase power design with Digi+ VRM supplies stable current to Ryzen 9000, 8000 and 7000 series processors. VRM heatsinks and multiple hybrid fan headers manage heat across the board. The CPU earned a CES 2025 Innovation Award Honoree designation in the Computer Hardware & Components category.

Connectivity and software ecosystem

Wi-Fi 6E and 2.5Gb Ethernet handle wireless and wired networking. USB 10Gbps Type-C ports provide fast data transfer. Aura Sync and Addressable Gen 2 headers control RGB lighting. Armoury Crate, DriverHub and GlideX utilities simplify driver updates, device management and cross-device workflows.

Highlights

  • Ready-to-build combo with matched Ryzen 7 9800X3D CPU and B850 motherboard
  • Stable power for Ryzen 9000/8000/7000 series via 8+2+1 phase Digi+ VRM design
  • DDR5 performance unlocked through AEMP optimization and extensive UEFI tuning options
  • Fast connectivity with Wi-Fi 6E, 2.5Gb Ethernet and USB 10Gbps Type-C ports
  • CES 2025 Innovation Award honoree featuring 2nd-gen 3D V-Cache for low-latency gaming

Specifications

BrandASUS
ModelPRIME B850-PLUS WIFI+R7 9800X3D
CPU Socket TypeAM5

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

How do I install the Ryzen 7 9800X3D into the AM5 socket without bending pins?

Align the gold triangle on the CPU with the socket marker, lower it straight down without force, then flip the retention arm until it clicks. The step people miss is removing the plastic socket cover only after the CPU is seated, not before.

What maintenance will the VRM cooling and Wi-Fi 6E module need over time?

Clean dust from the VRM heatsinks and chipset fan headers every few months using compressed air. The Wi-Fi 6E antenna connectors should stay finger-tight; reseat them if signal drops. No thermal-pad replacement is scheduled.

At what point does the 8+2+1 phase power design hit its thermal limit under sustained all-core loads?

The VRM heatsinks are rated for continuous operation at stock 9800X3D settings. Extended AVX workloads at elevated voltages will throttle first via Digi+ VRM protection before components overheat.

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