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ASUS PRIME B850M-A WIFI micro-ATX motherboard with AMD Ryzen 7 9850X3D CPU in AM5 socket

ASUS

ASUS PRIME B850M-A WIFI + Ryzen 7 9850X3D AMD motherboard CPU combo

SKU CH-ZG64-QBWE1

A motherboard and CPU combo with an 8-core Ryzen 7 9850X3D processor reaching 5.6 GHz boost, 96 MB L3 cache, DDR5-8000 support, three M.2 slots up to 128 Gbps, PCIe 5.0, Wi-Fi 6E and 2.5 Gb Ethernet

  • CPU socketAM5
  • Gaming advantage from 96 MB L3 cache on Ryzen 7 9850X3D
  • DDR5 speeds up to 8000 MT/s overclocking headroom
  • PCIe 5.0 slot ready for next-gen graphics and storage
  • Wi-Fi 6E plus Realtek 2.5 Gb Ethernet for fast networking
  • Three M.2 slots sharing up to 128 Gbps bandwidth

ASUS PRIME B850M-A WIFI + Ryzen 7 9850X3D Combo

This motherboard and CPU combo pairs an ASUS PRIME B850M-A WIFI board with an AMD Ryzen 7 9850X3D processor. The board uses the AMD B850 chipset and AM5 socket in a micro-ATX layout. The CPU delivers 8 cores and 16 threads based on the Zen 5 architecture with a max boost up to 5.6 GHz. It is designed for builders who want a ready-matched platform for gaming and productivity.

Suited for DDR5 8000 MT/s builds

This combo suits users targeting high DDR5 speeds up to 8000 MT/s and a PCIe 5.0 graphics slot. The 96 MB L3 cache on the processor benefits gaming workloads sensitive to latency. Builders needing more than three M.2 slots or a different form factor should consider other options. The included Realtek 2.5 Gb Ethernet and Wi-Fi 6E cover most modern network needs.

Three M.2 slots supporting up to 128 Gbps total

The motherboard provides three M.2 slots with a combined bandwidth of up to 128 Gbps for fast storage expansion. This capacity determines how many high-speed drives can run simultaneously without sharing lanes. Verify your SSD form factors and lengths match the board layout before purchasing. The DDR5-5600 base memory support and 8000+ MT/s overclocking headroom complete the storage and memory picture.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $946.99
Pricier than about 85% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model namePRIME B850M-A WIFI +R7 9850 × 3D
Processor
CPU socketAM5

Questions about this item

How much heat and power does the Ryzen 7 9850X3D produce during long sessions?

The 8-core, 16-thread CPU runs up to 5.6 GHz boost with 96 MB L3 cache and is sold without a cooler, so sustained heat and power depend entirely on the cooling solution you install.

Which memory kit and graphics card are required to boot this AM5 combo?

You must supply DDR5 modules — the board supports up to 8000 MT/s overclocked — and a discrete graphics card because the processor has no integrated GPU.

Can I keep my PCIe 5.0 graphics card and M.2 drives with this motherboard?

Yes, the board provides a PCIe 5.0 slot and three M.2 slots rated up to 128 Gbps, so current-generation graphics cards and high-speed drives work at full specification.

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