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Micro-ATX motherboard with AM5 socket CPU installed, black PCB, silver heatsinks, Wi-Fi 6E antennas

ASUS

ASUS PRIME B850M-A WIFI & Ryzen 9 9950X3D AMD motherboard & CPU combo

SKU CH-V94W-9C98B

B850 micro-ATX board with Wi-Fi 6E, 2.5 Gb Ethernet, three M.2 slots and DDR5 8000 MT/s support paired with a 16-core Ryzen 9 9950X3D CPU featuring 128 MB L3 cache and Radeon graphics

  • CPU Socket TypeAM5

Motherboard PRIME B850M-A WIFI

Show 3 more configurations

CPU + Ryzen 9 9950X3D

  • 16-core Zen 5 CPU powers heavy workloads with 128 MB L3 cache
  • Motherboard VRM uses 8+2+1 power modules on a 6-layer PCB for stable delivery
  • DDR5 memory scales to 8000 MT/s overclocking across three M.2 slots
  • PCIe 5.0 slot plus 2.5 Gb Ethernet and front USB 5 Gbps Type-C for fast I/O
  • UEFI BIOS with AURA SYNC and addressable ARGB header enables personalised lighting control

Motherboard & CPU Combo for AM5 Builds

This bundle pairs the ASUS PRIME B850M-A WIFI motherboard with the AMD Ryzen 9 9950X3D processor. The micro-ATX board uses the AMD B850 chipset and an AM5 socket. It targets enthusiasts who want a compact platform for high-end gaming or content creation workloads.

Sustained Load Behaviour with 170W Processor

The CPU carries a 170W thermal design power and features 128MB of L3 cache alongside 16MB of L2 cache. The motherboard supplies 8+2+1 power modules on a 6-layer PCB with Digi+ VRM digital control. VRM heatsinks, thermal pads and a dedicated M.2 heatsink work with 4-pin PWM/DC fan headers to manage heat during long sessions.

Compatibility Checks Before Ordering

Verify that your chassis fits a micro-ATX board and provides clearance for the VRM and M.2 heatsinks. Confirm your power supply delivers enough 12V current for the 170W CPU plus graphics cards. Ensure you purchase DDR5 memory kits rated for up to 8000 MT/s overclocking. Check that your case front panel includes a USB 5Gbps Type-C header to use the board's connector.

Highlights

  • 16-core Zen 5 CPU powers heavy workloads with 128 MB L3 cache
  • Motherboard VRM uses 8+2+1 power modules on a 6-layer PCB for stable delivery
  • DDR5 memory scales to 8000 MT/s overclocking across three M.2 slots
  • PCIe 5.0 slot plus 2.5 Gb Ethernet and front USB 5 Gbps Type-C for fast I/O
  • UEFI BIOS with AURA SYNC and addressable ARGB header enables personalised lighting control

Specifications

BrandASUS
ModelPRIME B850M-A WIFI+R9 9950X3D
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 much heat does the 170W Ryzen 9 9950X3D produce under sustained load?

The CPU has a 170W TDP; the board uses an 8+2+1 phase VRM with a 6-layer PCB and dedicated VRM heatsinks to manage that heat.

What memory kit do I need to reach the advertised DDR5 8000 MT/s?

You must supply DDR5 modules rated for 8000 MT/s or higher; the board supports up to that speed when overclocked.

Will my existing PCIe 4.0 graphics card and M.2 drives work at full speed in the PCIe 5.0 slot and three M.2 slots?

Yes — PCIe 5.0 is backward compatible, so PCIe 4.0 devices run at their native speeds in the x16 slot and all three M.2 slots.

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