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ASUS PRIME B860M-A WIFI motherboard with Intel Ultra 7 265K CPU and thermal grease

ASUS

ASUS PRIME B860M-A WIFI-CSM Intel Motherboard & Ultra 7 265K Combo

SKU CH-RTN2-AX1Z9

A B860 mATX motherboard paired with an Intel Core Ultra 7 265K CPU, DDR5 memory support to 8400 MT/s, PCIe 5.0 x16 and M.2, WiFi 6E and 2.5Gb Ethernet

  • ProcessorSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
  • ChipsetIntel B860
  • Form factorMicro ATX
  • CPU socketLGA 1851
  • Memory slot count4 × 288pin (DDR5)
  • Supported memory4 x DIMM slots, max. 192 GB, DDR5 Supports up to 8400+MT/s (

Model PRIME B860M-A WIFI

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CPU +Ultra 7 265K

  • Ready for Intel Core Ultra Series 2 processors via LGA 1851 socket
  • 192 GB DDR5 capacity across four slots with 8400 MT/s overclocking support
  • PCIe 5.0 x16 slot plus PCIe 5.0 M.2 for fastest GPU and storage
  • WiFi 6E and 2.5 Gb Ethernet deliver high-speed wired and wireless networking
  • 7+1+1+1 80 A DrMOS power stages ensure stable delivery for 125 W CPU

Ready for Intel Core Ultra Series 2

This bundle pairs the ASUS PRIME B860M-A WIFI motherboard with an Intel Core Ultra 7 265K processor and Shin-Etsu thermal grease. The board uses the Intel B860 chipset and LGA 1851 socket, built for Intel Core Ultra Series 2 processors. It delivers a 7+1+1+1 80A DrMOS power design with an 8-pin ProCool connector. The mATX form factor fits compact builds while keeping full connectivity.

Suits AI-focused builders.

The combo targets users building advanced AI-ready PCs who want a stable, corporate-grade platform with WiFi 6E and 2.5Gb Ethernet included. The bundled CPU and paste simplify procurement for system integrators. Builders chasing maximum overclocking headroom or workstation-class multi-GPU support should look at higher-tier chipsets with more robust power phases and additional PCIe lanes.

Single PCIe 5.0 x16 slot and one PCIe 5.0 M.2

The motherboard provides one PCI Express 5.0 x16 slot for graphics and one M.2 slot running PCIe 5.0 x4 for the fastest storage. A second M.2 slot runs at PCIe 4.0 x4. Four SATA 6Gb/s ports and RAID 0/1/5/10 handle bulk drives. Four DDR5 DIMMs support up to 192GB at 8400+ MT/s over dual channel.

How it compares

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

Price $562.99
Pricier than about 91% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Product linePrime
Model namePRIME B860M-A WIFI+Ultra 7 265K
Part numberPRIME B860M-A WIFI+Ultra 7 265K
Processor
CPU socketLGA 1851
ChipsetIntel B860
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM192 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsTotal supports 2 x M.2 slots and 4 x SATA 6Gb/s ports*
Intel® Core™ Ultra Processors (Series 2) *
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
SATA and RAID support0/1/5/10
Audio & video
Sound channelsRealtek 7.1 Surround Sound High Definition Audio CODEC*
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
** A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Connectivity
Maximum network speed1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
Wi-Fi standardWi-Fi 6E
2 × 2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6 GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6 GHz regulatory may vary between countries, supported only in Windows 11 or later
** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
Bluetooth supportYes
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe 4.0 x16 slots1 x PCIe 4.0 x16 slot (supports x4 mode)
1 x PCIe 4.0 x1 slot
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals.
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in (24.4 cm × 24.4 cm)
Compatibility
Windows 11 support(22H2 & later), Windows 10 64-bit(21H2 & later)

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Questions about this item

What does the 125 W base power of the Ultra 7 265K mean for my cooling choice?

The processor runs at 125 W base power and needs a capable air or liquid cooler; the included Shin-Etsu X-23-7868-2D thermal grease ensures good contact but a cooler is not supplied.

How does the PCIe 5.0 x16 slot limit graphics-card bandwidth in practice?

The single PCIe 5.0 x16 slot delivers full 5.0 bandwidth to a compatible GPU; a second PCIe 4.0 x16 slot runs at x4 speed and a PCIe 4.0 x1 slot is also present.

Will the mATX board and its LGA 1851 socket fit my chassis and CPU cooler?

The mATX form factor fits standard mATX or ATX cases with LGA 1851 mounting holes; the 4-pin CPU fan header and hybrid fan headers support common coolers.

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