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ASUS Prime B860-PLUS-CSM

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ASUS Prime B860-PLUS-CSM Specifications

ASUS Prime B860-PLUS-CSM by ASUS is a Standard-ATX form factor motherboard based on the mid-range B860 chipset and LGA 1851 socket, providing a balanced set of features and connectivity. It is designed to support DDR5 memory up to 256 GB and memory overclocking up to 8666 MHz. The motherboard features 4 memory slots and offers support for PCIe 5.0 x16, ensuring compatibility with modern GPUs and high-bandwidth expansion cards.

ASUS Prime B860-PLUS-CSM Performance Review

The ASUS Prime B860-PLUS-CSM includes a mid-range VRM setup, delivering 80 A through 8 phases. It supports most compatible CPUs on its socket but is not ideal for sustained overclocking or powering very high-wattage CPUs due to potential thermal limitations. Best suited for casual users and mainstream gamers seeking stable performance for everyday use.

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 B860-PLUS-CSM

Current Price Amazon: $0

  • Amazon Price: No price update history available.

    • Motherboard Available: False

    Chipset / Socket: B860 / LGA 1851

    Form Factor / Memory Slots: Standard-ATX / 4 slots.

    Memory Type / Max Cap / Max OC: DDR5 / 256 GB / 8666 MHz

    PCIe Suport: PCIe 5.0 x16

    Audio Chipset: Realtek ALC897

    Network: 1 x Realtek 2.5Gb Ethernet

    Motherboard Dimensions: 30.5 cm x 24.4 cm

    Quality & Features (max 110pts)

    VRM Quality: 6 pts.

    Chipset Q & F: 14 pts.

    Build Quality: 12 pts.

    Connectivity Q & F: 10 pts.

    Audio Quality: 6 pts.

    Total Points: 48 pts.

    VRM Configuration

    CPU Power Phases (Amps): 8 (80 A)

    Power Design: 8+1+1

    Calculated Performance

    Quality and Features per Price: %

    Additional Motherboard Information

    Memory:

    4 x DIMM slots, max. 256GB, DDR5
    Support up to  8666+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 (AEMP III)
    * 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 3 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 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
    M.2_3 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 20Gbps port (1 x USB Type-C®)
    2 x USB 10Gbps ports (2 x Type-A)
    1 x USB 5Gbps port (1 x Type-A)
    2x USB 2.0 ports (2 x Type-A)
    Front USB (Total 7 ports)
    1 x USB 5Gbps port (1 x USB Type-C®)
    1 x USB 5Gbps header supports additional 2 USB 5Gbps ports
    2 x USB 2.0 headers support 4 additional USB 2.0 ports

    Internal I/O:

    Fan 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
    4 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
    3 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 header support 4 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 Panel Audio header (F_AUDIO)
    1 x S/PDIF Out header
    1 x SPI TPM header (14-1pin)
    1 x 10-1 pin Front System Panel header
    1 x Thunderbolt™ (USB4®) header

    Back Panel I/O:

    1 x USB 20Gbps port (1 x USB Type-C®)
    2 x USB 10Gbps ports (2 x Type-A)
    1 x USB 5Gbps port (1 x Type-A)
    2 x USB 2.0 ports (2 x Type-A)
    1 x DisplayPort
    1 x HDMI™ port
    1 x Realtek 2.5Gb Ethernet port
    3 x Audio jacks

    WiFi:

    M.2 slot only (Key E, CNVi & PCIe)*
    * Wi-Fi module is sold separately.

    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:

    None