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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 socketAM5

Model PRIME X870-P

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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.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $998.99
Pricier than about 88% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model namePRIME X870-P+R7 9850 × 3D
Processor
CPU socketAM5

Other versions of this model

5 more in the same range

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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