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Green mATX motherboard with silver PCIe slot and black M.2 covers

ASUS

ASUS PRIME B860M-K Intel B860 LGA 1851 mATX motherboard

SKU CH-3CTC-H6X5E

Supports 12th-14th Gen Intel Core and Core Ultra Series 2 processors with 6+1+1+1 phase digital power, DDR5-7600+ AEMP III, dual M.2 slots at PCIe 5.0 x4 and 4.0 x4, Realtek 2.5Gb Ethernet.

  • CPU Socket TypeLGA 1851
  • Supports 12th-14th Gen Intel Core & Core Ultra Series 2 processors with LGA 1851 socket
  • DDR5-7600+ (OC) speeds via AEMP III for stable high-performance memory
  • Dual M.2 slots with PCIe 5.0 x4 (128Gbps) and PCIe 4.0 x4 (64Gbps) for fast storage
  • Realtek 2.5Gb Ethernet plus front USB 5Gbps Type-C and rear USB 10Gbps Type-A connectivity
  • 2x Addressable Gen2 RGB headers with Aura Sync, Fan Xpert 2+ and Digi+ VRM for customization

Socket LGA 1851 micro-ATX motherboard

The ASUS PRIME B860M-K is a micro-ATX board for Intel LGA 1851 processors. It targets builders who need a compact foundation for current Core and Core Ultra Series 2 CPUs. The 6+1+1+1 phase digital power design with ProCool 8-pin connector delivers stable voltage for everyday workloads.

Dual M.2 slots and DDR5 memory

Two M.2 slots provide one PCIe 5.0 x4 lane at 128Gbps and one PCIe 4.0 x4 lane at 64Gbps for fast storage. Four DDR5 slots support AEMP III profiles up to DDR5-7600+(OC). Rear I/O includes Realtek 2.5Gb Ethernet, USB 10Gbps Type-A, and DisplayPort. A front-panel USB 5Gbps Type-C header is also present.

Fan Xpert 2+ cooling and RGB headers

Fan Xpert 2+ manages system fans for balanced thermals and noise. Two addressable Gen2 RGB headers sync with Aura Sync lighting. Digi+ VRM power management helps efficiency under load. Builders who need more than two M.2 drives or additional high-speed rear ports should verify the specification meets those requirements.

Highlights

  • Supports 12th-14th Gen Intel Core & Core Ultra Series 2 processors with LGA 1851 socket
  • DDR5-7600+ (OC) speeds via AEMP III for stable high-performance memory
  • Dual M.2 slots with PCIe 5.0 x4 (128Gbps) and PCIe 4.0 x4 (64Gbps) for fast storage
  • Realtek 2.5Gb Ethernet plus front USB 5Gbps Type-C and rear USB 10Gbps Type-A connectivity
  • 2x Addressable Gen2 RGB headers with Aura Sync, Fan Xpert 2+ and Digi+ VRM for customization

Specifications

CPU Socket TypeLGA 1851

Questions about this item

Will the 6+1+1+1 phase VRM with ProCool 8-pin connector throttle during sustained all-core workloads?

The 6+1+1+1 phase digital power design and ProCool 8-pin connector are engineered to deliver stable current to 12th-14th Gen Intel Core and Core Ultra Series 2 processors under continuous load.

How loud and hot does the board run with Fan Xpert 2+ controlling system fans all day?

Fan Xpert 2+ adjusts fan curves based on onboard sensors, while Digi+ VRM power management reduces VRM heat, keeping noise and temperatures in check during extended operation.

Which DDR5 memory kits work with AEMP III to hit 7600+ MT/s on this board?

ASUS Enhanced Memory Profile III (AEMP III) automatically optimises compatible DDR5 modules for speeds of 7600+ MT/s (OC) without manual tuning.

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