Name: PRIME B850-PLUS-CSM
Brand: ASUS
SKU: 31077

PRIME B850-PLUS-CSM

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B850-PLUS-CSM

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen^™ 9000 series processors. The PRIME B850-PLUS-CSM 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.

8+2+1

phase digital power design

AEMP

for enhanced DDR5 performance

2.5Gb Ethernet

for faster data transfers

ASUS FAN Xpert 2+

for ultimate cooling control

USB 10Gbps Type-C^®

for rapid data transmission

PCIe 5.0 slots

for graphics card and storage

EZ PC DIY

for easier build customization

Pre-mounted
I/O shield

for safeguarding ports and enhancing aesthetics

Aura Sync

for full RGB lighting control

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.

Learn more about ASUS CSM program

* Lifecycle support, program offering and supply status may vary by region. Please consult your local sales representative for more information.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Learn more about ASUS Control Center Express

Optimize IT endpoint management

Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locationss remotely.

Automate IT maintenance

Allows IT staff to schedule automatic updates of the latest Bioses, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility.

White shield icon with a checkmark inside on a blue circular background

Securely manage all of endpoints

Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices.

White calendar icon with a green highlighted date on a blue circular background

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

PRIME B850-PLUS-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.

Vcore power

SOC power

Misc power

Angled top-down view of PRIME B850-PLUS-CSM motherboard.

Six-layer PCB design

Enhanced stability and overclocking.

The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.

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

Enhanced DDR5 performance

Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850-PLUS-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.²

For entry-level modules without EXPO^™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.

For those looking to surpass stock DDR5 speeds, the PRIME B850-PLUS-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO^™) support and a wide array of UEFI settings for further performance tweaks.³

Three M.2 slots (up to 128 Gbps)

PRIME B850-PLUS-CSM offers a total of three M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and two that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.⁴

Graphic depicting different M.2 slots on a motherboard.

Cooling

Cooler by design

The PRIME B850-PLUS-CSM 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

Two massive VRM heatsinks and essential thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

4-Pin PWM/DC fan

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

AIO pump header

A dedicated PWM/DC header supports self-contained water-cooling setups.

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.

M.2 heatsink

One Flexible M.2 heatsink that can take care of either of the two M.2 slots, preventing throttling that can occur with M.2 storage during extended transfers.

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.

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.

Cooler compatibility

ASUS AIO coolers offer robust performance, high overclocking potential, bold aesthetics and customizable functionality for new motherboards, empowering you to build your dream gaming rig.⁵

See compatible AIO coolers

A Prime motherboard and AIO cooler on a table.

Flexibility

Empowering connections

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

2.5Gb Ethernet

PCIe 5.0

PCIe 5.0 slot

USB 10Gbps

Realtek 2.5 Gb Ethernet

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

USB 10Gbps Type-C^®

A batch of USB ports support high-end rigs loaded with peripherals, including a rear USB Type-C^® connector with ultrafast USB 10Gbps for transmission speeds of up to 10Gbps.

Customization

Personalization

The PRIME B850-PLUS-CSM 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 Gen 2 RGB headers

Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

Image depicting PRIME B850-PLUS-CSM ARGB connectors.

Customization

DIY friendly

The PRIME B850-PLUS-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

Build for the most advanced pc for gaming and creating

When only the fastest will do, ASUS motherboards deliver. With faster dual-channel DDR5 memory support, AMD EXPO^™ technology and PCIe^® 5.0 support for both graphics and NVMe, you can play the most demanding games and deliver your biggest projects with the revolutionary performance of an ASUS motherboard and AMD Ryzen^™ 9000, 8000, and 7000 Series processors.

^© 2024 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, Radeon, Ryzen and combinations thereof are trademarks of Advanced Micro Devices, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective owners.

Availability of ASUS AI Advisor may vary by region.
AI Advisor functions may vary by platform. ↑
Memory overclocking may vary between CPU series. Please refer to the spec table for detailed information.↑
Supported memory types, data rates (speed), and number of DRAM modules vary depending on the CPU and memory configuration. For more information, please refer to the CPU/Memory Support List under the Support tab on the product information page or visit http://www.stzgcm.com/no/support/download-center/.↑
Actual transmission speeds will be lower than the theoretical maximum speed.↑
Image(s) for reference only.↑
Video(s) for reference only.↑