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Micro-ATX motherboard in dark finish with large CPU cooler and silver heatsinks

ASUS

ASUS PRIME B850M-A WIFI + Ryzen 7 9800X3D AMD motherboard combo

SKU CH-VCB4-4REJG

AM5 micro-ATX combo with 8-core 16-thread Ryzen 7 9800X3D at 5.2 GHz boost, 96 MB L3 cache, DDR5 up to 8000 MT/s, three M.2 slots to 128 Gbps, PCIe 5.0, Wi-Fi 6E and 2.5 Gb Ethernet

  • CPU socketAM5

Motherboard PRIME B850M-A WIFI

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CPU + Ryzen 7 9800X3D

  • Ready-to-build combo with matched ASUS motherboard and Ryzen CPU
  • 8-core 16-thread Zen 5 processor boosts to 5.2 GHz with 96 MB L3 cache
  • DDR5 memory overclocks to 8000 MT/s across three M.2 slots reaching 128 Gbps
  • VRM heatsinks, M.2 heatsink and 4-pin PWM/DC headers keep thermals in check
  • PCIe 5.0 slot, Wi-Fi 6E and Realtek 2.5 Gb Ethernet deliver modern connectivity

ASUS PRIME B850M-A WIFI + Ryzen 7 9800X3D Combo

This bundle pairs an ASUS PRIME B850M-A WIFI motherboard with an AMD Ryzen 7 9800X3D processor for Socket AM5. The micro-ATX board features an 8+2+1 power design, 6-layer PCB and Digi+ VRM control. It supports DDR5 memory up to 8000 MT/s overclocked and includes three M.2 slots. Connectivity covers PCIe 5.0, Wi-Fi 6E, Realtek 2.5 Gb Ethernet and front USB 5 Gbps Type-C.

Ryzen 7 9800X3D Gaming CPU with 3D V-Cache

The Ryzen 7 9800X3D delivers 8 cores and 16 threads on Zen 5 architecture with a 5.2 GHz max boost clock. Its 96 MB L3 cache and 2nd-gen 3D V-Cache technology target low-latency gaming performance. The chip is unlocked for overclocking and supports DDR5-5600 natively. Builders needing higher core counts or integrated graphics for non-gaming workloads should evaluate other AM5 processors.

DDR5 8000 MT/s Overclock Ceiling on B850 Chipset

The motherboard’s validated DDR5 overclock limit of 8000 MT/s sets the practical memory speed ceiling for this combo. Buyers planning to run memory faster than this specification will need a different chipset or board. Matching your memory kit to this ceiling ensures stability without manual voltage tuning beyond the board’s validated range.

How it compares

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

Price $746.99
Pricier than about 76% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model namePRIME B850M-A WIFI+R7 9800 × 3D
Processor
CPU socketAM5

Other versions of this model

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Questions about this item

Does the ASUS PRIME B850M-A WIFI combo include a CPU cooler or must one be bought separately?

The bundle contains the motherboard and the Ryzen 7 9800X3D processor only; a compatible AM5 cooler is not included and must be purchased separately.

Should I choose the 8-core Ryzen 7 9800X3D or a higher-core alternative for this board?

This combo is fixed to the 8-core 9800X3D with 96 MB L3 cache and 5.2 GHz max boost; no other CPU option is offered with this motherboard.

What does the DDR5 8000 MT/s (OC) figure mean once the system is assembled?

It is the maximum overclocked memory speed the board can reach with a capable kit; the CPU officially supports DDR5-5600, so any speed above that requires manual tuning in the UEFI BIOS.

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