The ASUS Pro WS B850M-ACE SE delivers workstation performance with support for AMD Ryzen 9000, 8000 & 7000 series processors, ultrafast storage featuring dual PCIe 5.0 M.2 slots, and powerful remote management. With DDR5 support up to 8000+MHz(OC) and 3X LAN ports including a 10Gb Ethernet connection, this micro-ATX motherboard is built for creators, demanding workloads, and professional environments needing uncompromising reliability and flexibility.
Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries within 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.
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Features
Pro WS B850M-ACE SE
ASUS Pro WS B850M-ACE SE AMD Micro-ATX motherboard, with server-grade IPMI management, PCIe 5.0 x 16, PCIe 5.0 M.2, PCIe 5.0 MCIO, U.2 connector, 10Gb and 2.5Gb Ethernet, ready for USB4®.
The Pro WS B850M-ACE SE empowers workstation users of all levels by maximising the performance of the latest AMD Ryzen™ processors via 8+2+1 team power stages, DDR5 slots, PCIe® 5.0 and lightning-fast connectivity including a front USB 20Gbps Type-C® connector, plus 10Gb and 2.5Gb Ethernet.
This workstation motherboard is an ideal choice for content creation, AI and deep learning, and IT management.
- Ready for Advanced AI PCs: Built to power next-gen AI workloads with robust performance, ultrafast connectivity, and future-proof architecture.
- AMD AM5 Socket Support: Compatible with AMD Ryzen™ 9000/8000/7000 Series and AMD EPYC™ 4005 Series processors.
- Ultrafast Connectivity: Two PCIe® 5.0/4.0 x16 slot (one at x4), 10 Gb & 2.5 Gb LAN ports, two PCIe® 5.0 x4 M.2 slots, front USB 20Gbps Type-C® and MCIO NVMe support.
- Server-grade IPMI Remote Management: Supports onboard BMC AST2600, along with ASUS Control Center Express IT management software for real-time monitoring and management.
- Proven Reliability & Stability: Extensively validated with broad compatibility, a comprehensive QVL, and tested for 24/7 operation.
- Front USB 20Gbps Type-C® Connector for ultrafast data transmission
- Dual Ethernet - 10Gb and 2.5Gb LAN
- 8+2+1 Power Stages rated for up to 80A each
- Remote Control Solution onboard BMC ASUS Control Center Express
- PCIe® 5.0 full support for next-gen graphics cards
- Easy PC DIY - M.2 Q-Latch and ASUS DriverHub
- DDR5 Support effortlessly apply to unleash performance
- 24/7 Reliability - 168 hours, 45°C and 80% humidity
- Exclusive AI Technology - AI Cache Boost for faster local LLM performance
Ports & Slots
- 4 x DDR5 DIMM slots Dual channels
- 1 x USB 20Gbps Type-C® connector
- AM5 Socket for AMD Ryzen™ Desktop Processors
- USB 2.0 for BIOS Flashback™
- MCIO connector
- U.2 connector
- 2 x M.2 2280 PCIe 5.0 x4
- 4 x SATA 6Gb/s ports
- 2 x USB 2.0 header
- 1 x USB 5Gbps header
- PCIe 5.0 x16
- BMC AST2600
- PCIe 4.0 x16 (Max. @x4)
- COM port
- 10Gb Ethernet
- 2.5Gb Ethernet
- DP
- 2x USB 10Gbps
- USB 10Gbps Type-C® with DP Alt Mode
- 2x USB 2.0
- HDMI
- USB 10Gbps Type-C®
- BMC DM LAN
- 8-CH HD Audio
- Clear CMOS Button
- VGA from AST2600
Ultrafast Networking
Featuring onboard dual Ethernet ports—one Realtek 10Gb LAN and one Intel® 2.5Gb LAN—the Pro WS B850M-ACE SE delivers high-speed network connectivity for demanding workflows. Additionally, it includes a dedicated Realtek 1Gb Ethernet port exclusively for BMC and IPMI management.
PCIe 5.0 Support
The Pro WS B850M-ACE SE offers PCIe 5.0 support to give unfettered bandwidth to the fastest SSDs and graphics cards available.
PCIe 5.0 Expansion Slot
The Pro WS B850M-ACE SE is equipped with one PCIe 5.0 expansion slot, offering incredible speeds of up to 64GB/s for compatible devices. It is also protected with SafeSlot retention brackets to bear the brunt of massive graphics cards, if need be.
Remote Control Solution
Onboard BMC
The Pro WS B850M-ACE SE workstation motherboard features compatibility with BMC connections, and it is bundled with ASUS Control Center Express software to provide comprehensive in-band and out-of-band management features for businesses and industries.
Remote Console (ACCE Service)
- Client with BMC (Onboard) - In-band and out-of-band
- Client without BMC - In-band only
ASUS Control Center Express
ASUS Control Center Express is remote IT management software designed for monitoring your hardware and software IT assets and inventory status, with enhanced security and remote control features that prevent data leaks and improve IT operational efficiency.
USB Port Management
Enable or disable the USB port, or set it to Read Only to prevent data leaks.
Software Blacklist
For added security, a software blacklist is available to help prevent the use of high-risk applications.
Registry Editor On/Off
Remotely disable the Registry Editor on client devices to prevent unauthorised changes to system configurations.
The Core of Your Powerful Workstation
Designed to meet the needs of high-core-count CPUs, the Pro WS B850M-ACE SE features 8(80A)+2(80A)+1(80A) power stages that integrate high-side and low-side MOSFETs and drivers into packages rated for up to 80 amps each. This configuration ensures optimal power delivery, efficiency, stability and performance for AMD processors.
Eight-Layer PCB Design
This enhances quick heat dissipation around the voltage regulators for enhanced stability and overclocking.
ProCool II Connectors
These are built to tight specifications to ensure flush contact with PSU power lines. The resulting lower impedance helps to prevent hotspots and connector failure.
Superior Chokes & Capacitors
These are engineered to resist extreme temperatures, providing a higher level of performance than the industry standard.
Digi+ VRM Control
The ASUS Digi+ voltage-regulator module (VRM) is one of the finest in the industry and ensures ultra-smooth power delivery to the CPU.
Memory
The Pro WS B850M-ACE SE motherboard is primed and ready for enthusiast-grade kits, courtesy of vast AMD Extended Profiles for Overclocking (EXPO™) support. You can extract all the potential out of your DDR5 modules (Memory overclocking may vary between CPU series. Please refer to the spec table for detailed information), whether they’re from an extreme-speed kit or an entry-level set that would otherwise be locked.
Intelligent AI Solutions
AI Cache Boost
Supercharge your large language model (LLM) workflows with AI Cache Boost. Exclusive to ASUS AMD 800 and 600 series motherboards that use Ryzen™ 9000 Series CPUs, this BIOS setting optimises CPU cache and memory pathways to deliver up to 29% faster local LLM performance with high-speed memory tuning.
Tokens Per Second
With an ASUS AMD 600 or 800 series motherboard and a Ryzen™ 9000 series CPU, you can enable the AI Cache Boost setting in the BIOS. This feature applies comprehensive optimisations to CPU cache and memory pathways, greatly reducing the typical performance drop that can happen when VRAM is used up.
Internal testing determined that enabling AI Cache Boost delivered up to a 15% performance uplift when running large language models that exceeded graphics card memory. With high-speed DDR5 memory and additional Infinity Fabric clock (FLCK) speed tuning, this performance uplift nearly doubled.
For enthusiasts, creators or anyone who wants a powerful AI model capable of deep reasoning and natural conversation running on their own hardware, they can enjoy these uplifts today with AI Cache Boost.
AMD Ryzen 7 9800X3D - RX9070XT-16GB - ROG Crosshair X870E Hero
- Default: 6.35
- AI Cache Boost: 7.31 (+15.12%)
- AI Cache Boost: 8.2 (EXPO8000 + FCLK 2200 MHz) (+29.13%)
AMD Ryzen 7 9800X3D - RTX5080-16GB - ROG Crosshair X870E Hero
- Default: 6.01
- AI Cache Boost: 6.96 (+15.81%)
- AI Cache Boost: 7.64 (EXPO8000 + FCLK 2200 MHz) (+27.12%)
Benchmark
AMD Ryzen 9 9950X3D - RTX 4090 - ROG Crosshair X870E Hero
Geekbench AI (Higher is Better)
- Default: 51786
- AI Cache Boost: 54392 (+5.03%)
- AI Cache Boost & Turbo Game Mode: 56757 (+9.60%)
UL Procyon - AI Computer Vision Benchmark (Higher is Better)
- Default: 1426
- AI Cache Boost: 1485 (+4.14%)
- AI Cache Boost & Turbo Game Mode: 1702 (+19.0%)
Topaz Video AI (Lower is Better)
- Default: 153 sec
- AI Cache Boost: 148 sec (+3.27%)
- AI Cache Boost & Turbo Game Mode: 145 sec (+5.23%)
AMD Ryzen 7 9800X3D - RTX 4090 - ROG Crosshair X870E Hero
UL Procyon - AI Computer Vision Benchmark (Higher is Better)
- Default: 1490
- AI Cache Boost: 1680 (+12.75%)
Easy PC DIY
M.2 Q-Latch
The innovative ASUS Q-Latch makes it easy to install or remove an M.2 SSD without the need for specific tools or screws. This design employs a simple locking mechanism to secure the drive and neatly detach it with one tap.
ASUS DriverHub
ASUS DriverHub streamlines the installation and management of ASUS drivers and utilities to keep your hardware up-to-date and perform optimally. This standalone application automatically detects current driver versions and presents available updates in a list view. Users are invited to install ASUS DriverHub after OS installation.
Comprehensive Storage Support
The Pro WS B850M-ACE SE features two PCIe 5.0 x4 M.2 slots, plus one MCIO connector (PCIe 5.0 x4), and one U.2 connector (PCIe 3.0 x4) for industrial-grade U.2 SSD support, delivering exceptional flexibility and high-speed storage options. All M.2 slots support NVMe® RAID configurations to take advantage of the latest available speeds.
Bandwidth (Gbps)
- PCIe 5.0 x4 - 128
- PCIe 4.0 x4 - 64
- PCIe 3.0 x4 - 32
24/7 Reliability
Optimised for 24/7 operation, the Pro WS B850M-ACE SE motherboard is tested to work at up to 45°C and 80% humidity, ensuring it can handle diverse operating environments.
- 168 hr ageing time
- 45 °C temperature
- 80 % relative humidity
