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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

  • CPU Socket TypeLGA 1851
  • CPU TypeSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory Standard4 x DIMM slots, max. 192GB, DDR5 Supports up to 8400+MT/s (O
  • Maximum Memory Supported192GB

model PRIME B860M-A WIFI

+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.

Highlights

  • 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

Specifications

BrandASUS
SeriesPrime
ModelPRIME B860M-A WIFI+Ultra 7 265K
Part NumberPRIME B860M-A WIFI+Ultra 7 265K
CPU Socket TypeLGA 1851
CPU TypeSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**
* Refer to https://www.asus.com/support/download-center/ for CPU support list.
** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory Standard4 x DIMM slots, max. 192GB, DDR5
Supports up to 8400+MT/s (OC), Non-ECC,Un-buffered ,Clocked Unbuffered DIMM (CUDIMM)*
Dual channel memory architecture
DIMM Fit
Supports Intel® Extreme Memory Profile (XMP) memory module
ASUS Enhanced Memory Profile III(AEMPIII)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/.
* Non-ECC, un-buffered DDR5 memory su
Maximum Memory Supported192GB
Channel SupportedDual Channel
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x161 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.
Serial ATA (SATA)4 x SATA 6Gb/s
M.2Total 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 RAID0/1/5/10
Audio 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.
Max LAN Speed1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
Wireless LANWi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6GHz 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.
BluetoothYes
Back I/O Ports1 x USB 20Gbps port (1 x USB Type-C®)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A )
2 x DisplayPort
1 x HDMI™ port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
Other ConnectorsFan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 x 4-pin Chassis Fan headers
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
Storage Related
2 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 x USB 10Gbps connector (supports USB Type-C® )
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
1 x USB 2.0 header supports 2 additional USB 2.0 ports
Miscellaneous
3 x Addressable Gen 2 headers
1 x Aura RGB header
1 x Clear CMOS header
1 x Chassis Intrusion header
1 x COM Port header
1 x Front Pane
Windows 11Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
Form FactorMicro ATX
Dimensions (W x L)9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM (- Digital power design with DrMOS)
- ESD Guards
- LANGuard
- Overvoltage protection
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- ProCool
- Pre-mounted I/O shield
Aura Sync
- Aura RGB header
- Addressable Gen2 headers

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

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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