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ASUS PRIME X870-P motherboard with Ryzen 9 9900X3D CPU installed, ATX form factor, black finish

ASUS

ASUS PRIME X870-P + Ryzen 9 9900X3D AMD motherboard CPU combo

SKU CH-SKPV-Y298E

Pairs a 12-core Ryzen 9 9900X3D with an X870 ATX board offering four M.2 slots, DDR5 memory, Realtek 2.5 Gb Ethernet and USB 40 Gbps connectivity

  • CPU Socket TypeAM5

Motherboard PRIME X870-P

CPU + R9 9900X3D

  • Ready-to-build combo with matched motherboard and CPU
  • Stable 14-phase 80A DrMOS power for Ryzen 9000 series
  • Large VRM cooler plus Fan Xpert 4 keeps temperatures low
  • 5 Gb Ethernet and USB 40Gbps for fast data
  • 128 MB L3 cache and Radeon graphics on 120W Zen 5 chip

Combo for AM5 builders

The ASUS PRIME X870-P motherboard paired with the AMD Ryzen 9 9900X3D processor delivers a ready-to-run platform for enthusiasts who want high core counts and large cache without assembling parts separately. The 12-core CPU operates at a 120W base power and brings 128MB of L3 cache plus integrated Radeon graphics for display output or light compute tasks. The board uses the AM5 socket and DDR5 memory slots, targeting builders who need a stable foundation for productivity or gaming workloads.

PCIe 5.0 and USB 40Gbps limits

The motherboard exposes PCIe 5.0 lanes for graphics and storage, so the fastest current add-in cards and M.2 drives can run at their rated throughput. Four M.2 slots are available, each subject to lane sharing rules that may reduce bandwidth when multiple devices are populated. The rear I/O includes a USB 40Gbps port and a USB 5Gbps header, while the Realtek 2.5Gb Ethernet controller caps wired networking at that speed. SATA 6Gbps ports remain for legacy drives.

DIY-friendly install with common pitfalls

A pre-installed I/O backplate and SafeSlot reinforced PCIe slots simplify the physical build, and the BIOS FlashBack button allows firmware updates without a CPU installed. Builders must still apply thermal paste, seat the cooler on the large VRM heatsink area, and connect the 8-pin and 24-pin power cables correctly. The most frequent issues are forgetting to enable DOCP for DDR5 speeds, leaving the CPU fan header unplugged, or populating M.2 slots in an order that disables a SATA port.

Highlights

  • Ready-to-build combo with matched motherboard and CPU
  • Stable 14-phase 80A DrMOS power for Ryzen 9000 series
  • Large VRM cooler plus Fan Xpert 4 keeps temperatures low
  • 5 Gb Ethernet and USB 40Gbps for fast data
  • 128 MB L3 cache and Radeon graphics on 120W Zen 5 chip

Specifications

BrandASUS
ModelPRIME X870-P+R9 9900X3D
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

Should I choose this combo or buy the motherboard and CPU separately?

This bundle pairs the PRIME X870-P motherboard with the Ryzen 9 9900X3D processor, ensuring socket AM5 compatibility and matched power delivery out of the box.

What does the 120W rating mean for my build?

The 120W TDP indicates the cooling capacity your CPU cooler must handle under sustained loads from the 12-core Zen 5 chip.

What does the USB 40Gbps port actually deliver?

The rear USB 40Gbps port provides up to 40 Gbps bandwidth for compatible external drives and docks.

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