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ASUS PRIME B650M-K-CSM micro ATX motherboard with Ryzen 7 9800X3D CPU installed, dark PCB, silver heatsinks

ASUS

ASUS PRIME B650M-K-CSM & Ryzen 7 9800X3D Combo AMD motherboard

SKU CH-0HF6-C2PFF

A motherboard and CPU combo featuring an AM5 micro-ATX board with two M.2 slots, 2.5 Gb LAN, USB 3.2 Gen 2 and front USB 3.2 Gen 1 Type-C.

  • CPU Socket TypeAM5

model PRIME B650M-K-CSM

Show 2 more configurations

+CPU +Ryzen 7 9800X3D

  • Ready for advanced AI workloads with power and connectivity for demanding applications
  • 8 cores and 16 threads based on Zen 5 architecture for high multi-thread performance
  • Max boost clock of 5.2 GHz unlocked for overclocking headroom
  • M.2 PCIe 5.0 plus Realtek 2.5 Gb Ethernet and USB 3.2 Gen 2 ports for fast I/O
  • Comprehensive cooling with VRM, M.2 and PCH heatsinks plus Fan Xpert 2+ control

Motherboard and CPU combo for AI workloads

The ASUS PRIME B650M-K-CSM paired with the Ryzen 7 9800X3D forms a ready-to-use platform for advanced AI computing. The AM5 socket secures the processor while the micro ATX form factor fits a wide range of chassis. This combination targets users who want integrated hardware for demanding AI applications without separate component selection.

Capacity and headroom

The CPU delivers 8 cores and 16 threads built on the Zen 5 architecture. A maximum boost clock of 5.2 GHz provides headroom for heavy multithreaded tasks and gaming workloads. The unlocked design allows manual overclocking when thermal and power conditions permit. Second-generation 3D V-Cache technology reduces latency for gaming scenarios. M.2 PCIe 5.0 and Realtek 2.5Gb Ethernet supply high-throughput storage and networking paths.

Bundled management software and RGB ecosystem

ASUS Control Center Express simplifies IT endpoint management across deployed systems. Aura Sync addressable Gen 2 headers and a standard RGB header enable synchronised lighting with compatible strips and peripherals. Fan Xpert 2+ and hybrid fan headers give software control over cooling curves for the VRM, M.2 and PCH heatsinks. Front-panel USB 3.2 Gen 1 Type-C and rear USB 3.2 Gen 2 ports add convenient high-speed connectivity for external devices.

Highlights

  • Ready for advanced AI workloads with power and connectivity for demanding applications
  • 8 cores and 16 threads based on Zen 5 architecture for high multi-thread performance
  • Max boost clock of 5.2 GHz unlocked for overclocking headroom
  • M.2 PCIe 5.0 plus Realtek 2.5 Gb Ethernet and USB 3.2 Gen 2 ports for fast I/O
  • Comprehensive cooling with VRM, M.2 and PCH heatsinks plus Fan Xpert 2+ control

Specifications

BrandASUS
ModelPRIME B650M-K-CSM+R7 9800X3D
CPU Socket TypeAM5

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Can I reuse my current Ryzen AM4 cooler with the AM5 socket on this PRIME B650M-K-CSM board?

The AM5 socket uses the same mounting-hole pattern as AM4, so most existing coolers that support AM4 will fit the Ryzen 7 9800X3D without a new bracket.

How can I confirm the 5.2 GHz boost clock is active on the Ryzen 7 9800X3D after assembly?

In the BIOS or a monitoring utility, watch the core frequencies under load; the processor is rated to reach a 5.2 GHz maximum boost when conditions allow.

Does the combo include an M.2 heatsink or must I buy one separately for the PCIe 5.0 slot?

The PRIME B650M-K-CSM motherboard ships with a dedicated M.2 heatsink already installed over the PCIe 5.0 slot, so no extra purchase is needed.

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