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Micro-ATX motherboard with CPU installed, black PCB, silver heatsinks, socket visible

ASUS

ASUS PRIME B850M-A WIFI + Ryzen 9 9950X AMD motherboard combo

SKU CH-9N5T-TSWH1

Micro-ATX AM5 motherboard paired with a 16-core 32-thread Ryzen 9 9950X, supporting DDR5 up to 8000 MT/s, PCIe 5.0, three M.2 slots, Wi-Fi 6E and 2.5 Gb Ethernet

  • CPU Socket TypeAM5

Motherboard PRIME B850M-A WIFI

Struck-through versions exist but are not stocked here.

CPU + Ryzen 9 9950X

  • 16-core 32-thread Ryzen 9 9950X delivers flagship multi-thread throughput
  • DDR5 up to 8000 MT/s overclock headroom scales memory bandwidth
  • Three M.2 slots share 128 Gbps peak throughput for fast storage
  • 5 Gb Ethernet plus Wi-Fi 6E keeps wired and wireless latency low
  • 8+2+1 power stages on six-layer PCB stabilise voltage under heavy load

B850 micro-ATX board with Ryzen 9 9950X

This combo pairs an ASUS PRIME B850M-A WIFI motherboard with a 16-core Ryzen 9 9950X processor for the AM5 socket. The board uses an 8+2+1 power module design on a six-layer PCB with Digi+ VRM control. It supports DDR5 memory up to 8000 MT/s when overclocked and includes three M.2 slots for high-speed storage.

Builders who need strong multi-threaded output

The 32-thread CPU reaches a 5.7 GHz max boost and provides 64 MB of L3 cache plus 16 MB of L2 cache for heavy workloads. Integrated Wi-Fi 6E and a Realtek 2.5 Gb Ethernet port handle networking without extra cards. Buyers who need a bundled cooler or a larger ATX form factor should consider other options.

DDR5 8000 MT/s overclock headroom

Memory speed potential is the key spec that determines whether this platform matches a build plan. The board validates DDR5 up to 8000 MT/s while the processor officially supports DDR5-5600. This gap means enthusiasts who tune memory timings gain bandwidth, while standard operation remains stable at the rated speed.

Highlights

  • 16-core 32-thread Ryzen 9 9950X delivers flagship multi-thread throughput
  • DDR5 up to 8000 MT/s overclock headroom scales memory bandwidth
  • Three M.2 slots share 128 Gbps peak throughput for fast storage
  • 5 Gb Ethernet plus Wi-Fi 6E keeps wired and wireless latency low
  • 8+2+1 power stages on six-layer PCB stabilise voltage under heavy load

Specifications

BrandASUS
ModelPRIME B850M-A WIFI+R9 9950X
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

What PCIe generation does the board's primary slot support and what bandwidth does it deliver?

The primary slot is PCIe 5.0 ready, providing up to 128 Gbps of bandwidth for compatible graphics cards or storage devices.

What cooler mounting pattern and clearance does the AM5 socket require for the included Ryzen 9 9950X?

The AM5 socket uses the standard AM4 mounting pattern; choose a cooler rated for AM5 with sufficient clearance for the VRM heatsinks surrounding the socket.

How is the CPU installed in the AM5 socket and which step is commonly missed?

Lift the retention lever, align the gold triangle on the Ryzen 9 9950X with the socket marker, place the chip gently without pressure, lower the frame, and lock the lever — the step often missed is removing the protective plastic cover from the socket before insertion.

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