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Micro-ATX motherboard with large CPU cooler installed

ASUS

ASUS PRIME B650M-K AMD motherboard with Ryzen 9 9950X3D CPU

SKU CH-6HDA-EAD03

Micro-ATX motherboard with Socket AM5, dual-channel DDR5 up to 6400 MHz, four SATA III ports, M.2 support, 2.5 Gb LAN and a 16-core 9950X3D CPU with 128 MB L3 cache

  • CPU TypeComputer Accessories

model PRIME B650M-K

+CPU +Ryzen 9 9950X3D

  • Ready for high-end multitasking with 16 cores and 128 MB L3 cache
  • Fast DDR5 memory support up to 6400 MHz across two slots
  • Room for 96 GB RAM using dual-channel unbuffered modules
  • PCIe 5.0 M.2 and SATA III for versatile storage expansion
  • Integrated AMD Radeon graphics for display output without a discrete card

ASUS PRIME B650M-K with Ryzen 9 9950X3D combo

This bundle pairs a Micro-ATX motherboard with a 16-core desktop processor built on a 4nm process. The board uses the AMD B650 chipset and the Socket AM5 platform. It targets builders who want a compact foundation for a high-end system.

Best for compact high-performance builds

The two DIMM slots support up to 96 GB of dual-channel DDR5 at speeds up to 6400 MHz, suiting users who need strong multi-threaded throughput in a smaller case. Builders requiring four memory slots, extensive PCIe expansion, or integrated Wi-Fi should consider other platforms.

CPU delivers 128 MB L3 cache and 170 W TDP

The included Ryzen 9 9950X3D provides 128 MB of L3 cache alongside 16 MB of L2 cache and a 170 W thermal design power. AMD Radeon graphics are integrated on the processor die. This cache capacity and power envelope are the key figures for cooling and workload decisions.

Highlights

  • Ready for high-end multitasking with 16 cores and 128 MB L3 cache
  • Fast DDR5 memory support up to 6400 MHz across two slots
  • Room for 96 GB RAM using dual-channel unbuffered modules
  • PCIe 5.0 M.2 and SATA III for versatile storage expansion
  • Integrated AMD Radeon graphics for display output without a discrete card

Specifications

BrandASUS
ModelPRIME B650M-K+R9 9950X3D
CPU TypeComputer Accessories

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 can I confirm the Ryzen 9 9950X3D is running at its 170W TDP after assembly?

Enter the BIOS and verify the CPU power limit shows 170W, then run a multi-thread load and check that the package power sustains near that figure.

What comes in the box and what must I purchase separately?

The bundle includes the PRIME B650M-K motherboard and the Ryzen 9 9950X3D processor; you must add DDR5 DIMMs, an M.2 or SATA drive, a CPU cooler and a power supply.

Which memory speed should I choose for the 9950X3D on this board?

The board supports DDR5 up to 6400 MHz; select a kit rated at 6000 or 6400 MHz for the best balance of latency and throughput with the 9950X3D.

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