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ASUS Prime B860M-K

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ASUS Prime B860M-K Specifications

ASUS Prime B860M-K by ASUS is a Micro-ATX form factor motherboard based on the mid-range B860M chipset and LGA 1851 socket, providing a balanced set of features and connectivity. It is designed to support DDR5 memory up to 128 GB and memory overclocking up to 8800 MHz. The motherboard features 2 memory slots and offers support for PCIe 4.0 x16, ensuring compatibility with modern GPUs and high-bandwidth expansion cards.

ASUS Prime B860M-K Performance Review

The ASUS Prime B860M-K comes with a basic VRM configuration, providing 55 A across 6 phases. It is designed for entry-level to mid-range low-wattage CPUs. Overclocking or using high-wattage CPUs may lead to thermal issues or potential damage. This board is recommended for budget builds or users with modest performance needs.

This motherboard includes an entry-level audio chipset — Realtek ALC897 — which provides basic sound quality suitable for casual use. While it’s acceptable for everyday tasks such as web browsing, video playback, and light gaming, it may not meet the expectations of users with mid to high-end audio setups. Audiophiles and those seeking high-fidelity sound should consider using a dedicated sound card or external DAC.

With a performance-per-price score of just %, this motherboard provides limited value compared to other options. It may be best suited for specific niche builds or if found at a discount.

Motherboard Information

Manufacturer: ASUS

Motherboard Name: ASUS Prime B860M-K

Current Price Amazon: $0

  • Amazon Price: No price update history available.

  • Motherboard Available: False

    Chipset / Socket: B860M / LGA 1851

    Form Factor / Memory Slots: Micro-ATX / 2 slots.

    Memory Type / Max Cap / Max OC: DDR5 / 128 GB / 8800 MHz

    PCIe Suport: PCIe 4.0 x16

    Audio Chipset: Realtek ALC897

    Network: 1 x Realtek 2.5Gb Ethernet

    Motherboard Dimensions: 24.4cm x 24.4cm

    Quality & Features (max 110pts)

    VRM Quality: 3 pts.

    Chipset Q & F: 14 pts.

    Build Quality: 10 pts.

    Connectivity Q & F: 8 pts.

    Audio Quality: 6 pts.

    Total Points: 41 pts.

    VRM Configuration

    CPU Power Phases (Amps): 6 (55 A)

    Power Design: 6+1+1+1

    Calculated Performance

    Quality and Features per Price: %

    Additional Motherboard Information

    Memory:

    2 x DIMM slots, max. 128GB, DDR5
    Supports up to 8800+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/. Adjustments will be made based on the specifications of mass-produced memory products available on the market.
    ** Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.

    Graphics:

    1 x DisplayPort**
    1 x HDMI™ port***  
    * Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.
    ** Supports max. 4K@60Hz as specified in DisplayPort 1.4.
    ***  Supports 4K@60Hz as specified in HDMI 2.1.
    **** VGA resolution support depends on processors' or graphic cards' resolution.

    Storage:

    Total 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)
    Intel® B860 Chipset
    M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
    4 x SATA 6Gb/s ports
    * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.

    USB:

    Rear USB (Total 6 ports)
    1 x USB 10Gbps port (1 x Type-A)
    2 x USB 5Gbps ports (2 x Type-A)
    3 x USB 2.0 ports (3 x Type-A)**
    Front USB (Total 7 ports)
    1 x USB 5Gbps connector (supports USB Type-C®)
    1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
    2 x USB 2.0 headers support 4 additional USB 2.0 ports**
    * USB Type-C® power delivery output: max. 5V/3A.
    ** USB_E1 port, USB_E2 port, USB_E3 port and USB_E4 port share the bandwidth.

    Internal I/O:

    Fan and Cooling Related
    1 x 4-pin CPU Fan header
    2 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 5Gbps connector (supports USB Type-C® )
    1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
    2 x USB 2.0 headers support 4 additional USB 2.0 ports
    Miscellaneous
    2 x Addressable Gen2 headers
    1 x Aura RGB header
    1 x Clear CMOS header
    1 x COM Port header
    1 x Front Panel Audio header (F_AUDIO)
    1 x S/PDIF Out header
    1 x SPI TPM header (14-1 pin)
    1 x 10-1 pin Front Panel System header

    Back Panel I/O:

    1 x USB 10Gbps port (1 x Type-A)
    2 x USB 5Gbps ports (2 x Type-A)
    3 x USB 2.0 ports (3 x Type-A)
    1 x DisplayPort
    1 x HDMITM port
    1 x Realtek 2.5Gb Ethernet port
    3 x Audio jacks
    1 x PS/2 Keyboard/Mouse combo port

    WiFi:

    None

    Audio:

    Realtek 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.

    Special Features:

    ASUS 5X PROTECTION III
    - DIGI+VRM
    - LANGuard
    - Overvoltage protection
    - SafeSlot Core+
    - Stainless-steel back I/O
    ASUS Q-Design
    - Q-Dashboard
    - Q-DIMM
    - Q-LED Core
    - Q-Slot
    ASUS Thermal Solution
    - VRM heatsink design
    ASUS EZ DIY
    - ProCool
    Aura Sync
    - Aura RGB header
    - Addressable Gen2 headers