Name: PRIME B860M-K
Brand: ASUS
SKU: 30837

PRIME B860M-K

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B860M-K

ASUS PRIME series motherboards are expertly engineered to unleash the full potential of the latest Intel^® Core^™ Ultra Processors (Series 2). Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the PRIME B860M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

6+1+1+1

phase digital power design

AEMP III

for enhanced DDR5 performance

USB 10Gbps Type-A

for rapid data transmission

AI Solutions

for advanced AI capabilities

USB 5Gbps Type-C^®

for rapid data transmission

PCIe 5.0 M.2

for storage

EZ PC DIY

for easier build customization

2.5Gb Ethernet

for faster data transfers

Aura Sync

for full RGB lighting control

Performance

AI Solutions

ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.

AI Advisor

ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.¹

Performance

Digital Power Design

Stable power is crucial for maximizing the performance of Intel^® Core^™ Ultra Processors (Series 2).The PRIME B860M-K features an 6+1+1+1 phase design with discrete MOSFETs,ensuring efficient and stable power delivery for Intel^® processors plus steady performance for day-to-day use.

VCCCORE power

VCCGT power

VCCSA power

VNNAON power

Angled top-down view of PRIME B860M-K motherboard.

ProCool connector

Proprietary 8-pin connector improve PSU connection.

Graphic depicting ProCool solid pin connector.

Proprietary connector augments the motherboard's link to the power supply with 8-pin connector that passes 12 volts of power directly to the processors. This connector features solid pins that can handle more current than hollow-pin connectors.

Power Saving

Optimize power with CPU, lighting, and fan settings.

The Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.

Digi+ VRM control

Real-time voltage control.

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.

Enhanced Memory & Storage Performance

AEMP III for Ultimate DDR5 Performance

ASUS Enhanced Memory Profile III (AEMP III) is an advanced firmware feature that empowers users to achieve unparalleled memory performance with cutting-edge CUDIMM memory. Through a two-phase comprehensive tuning process, AEMP III first optimizes the clock driver and then the memory frequency. This results in the best balance between performance and stability, even at cutting-edge speeds of DDR5-7600 or higher.²

AEMP III

7,600 (OC)

Intel DDR5 Baseband

6,400

Up to

19%

DIMM Fit

DIMM Fit is an ASUS-exclusive Bioses feature that precisely analyzes individual memory modules to optimize performance and pinpoint potential issues. This offers peak efficiency, compatibility, and system stability. Whether you are an overclocker seeking ultimate performance, a competitor pursuing the most responsive gameplay, or a content creator prioritizing rock-solid stability, DIMM Fit provides optimizations tailored to your needs and your hardware configuration.

Two M.2 slots (up to 128Gbps)

PRIME B860M-K offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128Gbps via PCIe 5.0, one that supports 64Gbps via PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.³

Graphic depicting different M.2 slots on a motherboard.

Cooling

Cooler by design

The PRIME B860M-K motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.

VRM heatsinks and thermal pads

The VRM heatsinks and thermal pads improve heat transfer from the MOSFETs for better cooling performance.

4-Pin PWM/DC fan

Each onboard header supports auto-detection of PWM or DC fans.

Multiple temperature sources

Each header can dynamically reference three thermal sensors. Fan Xpert 2+ lets you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

Passive chipset heatsink

An aluminum passive chipset heatsink ensures optimal cooling and stable performance. It is more durable and longer-lasting than heatsinks with fans, which can be vulnerable to the buildup of dust and debris.

Smart protection

A dedicated integrated circuit protects each fan header from overheating and excess current.

Cooling

Smart cooling precision

ASUS Fan Xpert 2+

ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI Bioses.⁴

Flexibility

Empowering connections

This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 M.2, PCIe 4.0 slot and an arsenal of USB ports which includes Type-C^® connection.

2.5Gb Ethernet

USB 10Gbps Type-A

PCIe 5.0 M.2

PCIe 4.0 slot

USB 5Gbps

Realtek 2.5Gb Ethernet

Realtek 2.5Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.

USB 5Gbps Type-C^®

A batch of USB ports support high-end rigs loaded with peripherals, including a front USB Type-C^® connector with ultrafast USB 5Gbps for transmission speeds of up to 5Gbps.

Customization

Personalization

The PRIME B860M-K enhances the user experience across the board, from simplifying Bioses setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.

UEFI Bioses

The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.

ASUS DriverHub

Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

Armoury Crate

Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

Aura Sync

Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

Addressable Gen2 RGB headers

Two Addressable Gen2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

Image depicting PRIME B860M-K ARGB connectors.

Customization

DIY friendly

The PRIME B860M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

Q-LED Core

The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.

No DRAM detected

fast blinking

4 Hz (0.25 s)

No VGA detected

slow blinking

1/2 Hz (2 s)

No boot device detected

very slow blinking

1/8 Hz (8 s)

Installation completed

solid light

Availability of ASUS AI Advisor may vary by region.
AI Advisor functions may vary by platform. ↑
Results may vary according to individual system specifications. Currently, only 2-DIMM configurations are supported. Results are based on a test with an Intel Core Ultra 9 285K processor and 2x16GB SK Hynix DDR5-6400 Clocked Unbuffered DIMM RAM, model HMCG78AHBCA326N.↑
Actual transmission speeds will be lower than the theoretical maximum speed.↑
Image(s) for reference only.↑
Video(s) for reference only.↑