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ASUS PRIME X870-P ATX motherboard with Ryzen 7 9850X3D CPU, silver VRM heatsinks, black PCB

ASUS

ASUS PRIME X870-P & Ryzen 7 9850X3D AMD motherboard combo

SKU CH-SD6Y-4F3RQ

AM5 motherboard and 8-core Ryzen CPU combo with 14-phase VRM, PCIe 5.0, four M.2 slots, 2.5 Gb Ethernet and 40 Gbps USB

  • CPU Socket TypeAM5

model PRIME X870-P

+CPU + Ryzen 7 9850X3D

  • Ready-to-build combo saves assembly time with matched ASUS PRIME X870-P board and Ryzen 7 9850X3D CPU
  • Strong 14+2+1 phase 80A DrMOS VRM with large cooler delivers stable power for 8-core 16-thread Zen 5 processor
  • 96 MB L3 cache and 5.6 GHz max boost cut latency for faster gaming frame rates
  • PCIe 5.0 and USB 40 Gbps ports plus Realtek 2.5 Gb Ethernet future-proof high-speed storage and network links
  • Fan Xpert 4 software and multiple hybrid fan headers give precise thermal control across the board

Combo platform for AM5 gaming builds

This bundle pairs an ASUS PRIME X870-P motherboard with an AMD Ryzen 7 9850X3D processor. The board uses the AM5 socket and supports DDR5 memory. It targets builders who want a ready-matched CPU and motherboard for high-refresh gaming without selecting parts separately.

8-core CPU with 96 MB L3 cache and PCIe 5.0 headroom

The Ryzen 7 9850X3D delivers 8 cores and 16 threads with a 5.6 GHz maximum boost clock. Its 2nd-generation 3D V-Cache provides 96 MB of L3 cache to reduce latency in games. The platform offers PCIe 5.0 lanes for graphics and storage, while DDR5-5600 support sets the baseline memory speed.

Fan Xpert 4 software and DIY-friendly hardware

ASUS Fan Xpert 4 gives software control over hybrid fan headers and the large VRM heatsink. The board includes a pre-installed I/O backplate, a BIOS FlashBack button for updates without a CPU installed, and SafeSlot reinforcement on the primary PCIe slot. Four M.2 slots and Realtek 2.5 Gb Ethernet complete the connectivity.

Highlights

  • Ready-to-build combo saves assembly time with matched ASUS PRIME X870-P board and Ryzen 7 9850X3D CPU
  • Strong 14+2+1 phase 80A DrMOS VRM with large cooler delivers stable power for 8-core 16-thread Zen 5 processor
  • 96 MB L3 cache and 5.6 GHz max boost cut latency for faster gaming frame rates
  • PCIe 5.0 and USB 40 Gbps ports plus Realtek 2.5 Gb Ethernet future-proof high-speed storage and network links
  • Fan Xpert 4 software and multiple hybrid fan headers give precise thermal control across the board

Specifications

BrandASUS
ModelPRIME X870-P+R7 9850X3D
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

Will the AM5 socket on the PRIME X870-P board work with the DDR5 memory I already own?

The board uses the AM5 socket, which is built for DDR5 memory. The included Ryzen 7 9850X3D CPU supports DDR5-5600 speeds, so your existing DDR5 modules will be compatible.

How can I verify the 14+2+1 DrMOS power stages and 96 MB L3 cache are active after assembly?

Enter the UEFI BIOS and check the hardware monitor for the 14+2+1 phase VRM readouts. In the operating system, use a tool such as CPU-Z to confirm the processor shows 96 MB of L3 cache and 8 cores with 16 threads.

What cooling and storage items are not included in the combo box?

The CPU is sold without a cooler, so you must buy a compatible AM5 cooler separately. The motherboard provides four M.2 slots and SATA 6Gbps ports, but no drives are included.

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