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ASUS PRIME B850M-K mATX motherboard with Ryzen 7 9700X CPU installed

ASUS

ASUS PRIME B850M-K & Ryzen 7 9700X AMD motherboard CPU combo

SKU CH-B96B-DJBM9

Combines a B850 mATX board with PCIe 5.0, 2.5 Gb Ethernet, USB 10 Gbps Type-A and front USB 5 Gbps Type-C with an 8-core, 16-thread Ryzen 7 9700X reaching 5.5 GHz boost and 40 MB cache

  • CPU socketAM5

Motherboard PRIME B850M-K

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CPU + Ryzen 7 9700X

  • 8 cores and 16 threads deliver high multi-threaded performance
  • Max boost clock of 5.5 GHz enables fast single-core speeds
  • 40 MB cache reduces latency for gaming workloads
  • DDR5 memory support up to 8400 MT/s overclocked for high bandwidth
  • Realtek 2.5 Gb Ethernet provides low-latency wired connectivity

ASUS PRIME B850M-K & Ryzen 7 9700X Combo

This ASUS motherboard and CPU bundle pairs the PRIME B850M-K board with an AMD Ryzen 7 9700X processor. The board uses the AM5 socket and the B850 chipset in a micro-ATX layout. It is sold as a matched kit for builders who want a coordinated platform foundation.

Suits AM5 builders wanting DDR5 and PCIe 5.0 ready

The combo fits users moving to the AM5 platform who need 8 cores and 16 threads for gaming or productivity. The 40 MB cache and 5.5 GHz max boost clock support high frame rates. Builders needing integrated graphics or a different core count should evaluate other AM5 processors.

8400 MT/s DDR5 overclock ceiling

The motherboard supports memory overclocks up to 8400 MT/s, which sets the practical speed limit for installed DDR5 kits. Buyers should confirm their chosen memory modules are validated for this frequency on the board's QVL. The CPU officially supports DDR5 5600 without overclocking.

How it compares

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

Price $504.99
Pricier than about 66% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model namePRIME B850M-K+R7 9700X
Processor
CPU socketAM5

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