ASUS Prime B860M-A WiFi-CSM
ASUS Prime B860M-A WiFi-CSM Specifications
ASUS Prime B860M-A WiFi-CSM 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 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 B860M-A WiFi-CSM Performance Review
The ASUS Prime B860M-A WiFi-CSM includes a mid-range VRM setup, delivering 80 A through 7 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.
This board delivers balanced value with a performance-per-price ratio of 52.7%, offering a solid blend of features, quality, and affordability.
Motherboard Information
Manufacturer: ASUS
Motherboard Name: ASUS Prime B860M-A WiFi-CSM
Current Price Amazon: $169
Amazon Price Updated: 19 hours, 17 minutes ago.
Motherboard Available: True
Chipset / Socket: B860M / LGA 1851
Form Factor / Memory Slots: Micro-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: Intel® B860 Chipset
Motherboard Dimensions: 24.4cm x 24.4cm
Quality & Features (max 110pts)
VRM Quality: 6 pts.
Chipset Q & F: 14 pts.
Build Quality: 9 pts.
Connectivity Q & F: 10 pts.
Audio Quality: 6 pts.
Total Points: 45 pts.
VRM Configuration
CPU Power Phases (Amps): 7 (80 A)
Power Design: 7(80A) + 1(80A) + 1(80A) + 1(80A)
Calculated Performance
Quality and Features per Price: 52.7%
Additional Motherboard Information
Memory:
Supports 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(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 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.
******While installing the operating system, please ensure that your monitor is connected to the HDMI port on the back I/O panel or to a discrete graphics card.
Storage:
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 modes)
4 x SATA 6Gb/s ports
* Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.
USB:
1 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)**
Front USB (Total 5 ports)
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
*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:
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 additionalUSB 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 (14-1 pin)
1 x 10-1 pin Front System Panel header
1 x Thunderbolt™ (USB4®) header
Back Panel I/O:
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
WiFi:
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.
Audio:
- 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:
- DIGI+ VRM (- Digital power design with DrMOS)
- ESD Guards
- LANGuard
- Overvoltage protection
- SafeSlot
- 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