MSI PRO B850M-A WIFI AM5 DDR5 M-ATX Motherboard

Description

Compact M-ATX foundation engineered for stable Ryzen 9000 performance with integrated Wi-Fi 7 connectivity.

Quick Specs

• Robust power delivery for sustained high-core CPU operation.
• Integrated Wi-Fi 7 ensures ultra-low latency networking.
• PCIe 5.0 and Lightning Gen 5 M.2 for maximum component throughput.
• Enhanced cooling structures protect critical power delivery components.
• Optimised layout for straightforward assembly in smaller chassis.

The compact foundation for raw power

This MSI PRO B850M-A WIFI motherboard is constructed for the enthusiast builder requiring genuine performance within the constraints of a Micro-ATX form factor. It is not intended for the novice seeking automated simplicity; it is for the user who understands that system stability begins with superior electrical regulation and thermal management, particularly when deploying the latest high-demand processors in the South African climate. As a premier PCIe 5.0 motherboard, it sets a new standard for compact builds.

Unwavering electrical integrity

Performance degrades when power delivery wavers. This board combats instability through a demanding Direct 8+2+1 Power System, utilising 60A Smart Power Stages (SPS). This is paired with robust 8+4-pin CPU power connectors. This configuration ensures that even when running a high-core count CPU under load, the voltage delivery remains consistent, preventing throttling and maximising effective clock speeds across all cores simultaneously. This robust platform supports modern processors on an AMD DDR5 motherboard foundation.

Sustained operational temperature control

Heat is the saboteur of silicon longevity. To counter this, the Frozr Guard system has been integrated; this features an Extended Heatsink design, augmented by MOSFET thermal pads rated specifically for 7W/mK thermal conductivity. Additional choke thermal pads and the inclusion of the EZ M.2 Shield Frozr II actively manage heat soak, ensuring that storage devices and power circuitry maintain optimal temperatures, translating directly into reliable, long-term service. This is the thermal discipline expected from a top-tier PCIe 5.0 motherboard.

Experience networking without compromise

In modern computing, network latency is as critical as CPU cycles. The integration of the 5G LAN chipset, supported by a cutting-edge Wi-Fi 7 solution, delivers secure, stable, and high-speed data transmission. For competitive gamers and professionals handling large data sets, this commitment to superior throughput eliminates bottlenecks inherent in older connectivity standards. This AMD DDR5 motherboard ensures your connectivity matches your processing speed.

Clarity through audio engineering

The system is equipped with Audio Boost technology. This dedication separates the audio circuits from noisy internal components, providing a pathway for studio-grade sound quality. This matters for the discerning user requiring accurate positional audio cues in simulations or immersive, detailed soundscapes in media consumption, transforming mere listening into an active experience. This entire structure rests on a foundation designed for speed.

FEATURES:

• Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
• Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
• Ultra Performance: Direct 8+2+1 Power System 60A SPS, 8+4-pin CPU power connectors, Core Boost, Memory Boost, and a 6-layer PCB
• Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II
• EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Clip II, and EZ Antenna
• Lightning Fast Game experience: PCIe 5.0 slot and Lightning Gen 5 x4 M.2
• 5G LAN with Wi-Fi 7 Solution: Delivering secure, stable, and high-speed networking and data transmission
• Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience

SPECIFICATIONS:

• Chipset: Intel B850
• CPU Support:
  • Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
  • Socket AM5
• Memory:
  • 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
  • Memory Support DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
  • Ryzen™ 9000 Series Processors max. overclocking frequency:
  • • 1DPC 1R Max speed up to 8200+ MT/s
  • • 1DPC 2R Max speed up to 6400+ MT/s
  • • 2DPC 1R Max speed up to 6400+ MT/s
  • • 2DPC 2R Max speed up to 6000+ MT/s
  • Supports AMD POR Speed and JEDEC Speed
  • Supports Memory Overclocking and AMD EXPOTM
  • Supports Dual-Channel mode
  • Supports Non-ECC, Un-buffered memory
  • Supports CUDIMM, Clock Driver bypass mode only
• Onboard Graphics:
  • 1x HDMI™
  • Support HDMITM 2.1, maximum resolution of 4K 60Hz*
  • 1x DisplayPort
  • Support DisplayPort 1.4, maximum resolution of 4K 60Hz*
  • *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
• Slot:
  • 2x PCI-E x16 slot
  • 1x PCI-E x1 slot
  • PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)
  • PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
  • PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
  • PCI_E1 slot
    • Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors)
    • Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)
    • Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor)
• Audio:
  • Realtek® ALC897 Codec
  • 7.1-Channel High Definition Audio
•  Storage:
  • 2x M.2
  • M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices
  • M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
  • 4x SATA 6G
  • M2_1 slot
    • Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
    • Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors)
  • M2_2 slot
    • Supports up to PCIe 4.0 x4
    • Supports up to PCIe 4.0 x2 (For Ryzen™ 8500/ 8300 Series processors)
  • *Please refer to the manual for M.2 SSD heatsink restrictions.
• RAID:
  • Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
  • Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
•  USB:
  • 4x USB 2.0 (Front)
  • 3x USB 5Gbps Type A (Rear)
  • 2x USB 5Gbps Type A (Front)
  • 3x USB 10Gbps Type A (Rear)
  • 2x USB 10Gbps Type C (Rear)
  • 1x USB 10Gbps Type C (Front)
• LAN: Realtek® 8126VB 5G LAN
• Wireless LAN & Bluetooth:
  • Wi-Fi 7
  • The Wireless module is pre-installed in the M.2 (Key-E) slot
  • Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (160MHz) up to 2.9Gbps
  • Supports 802.11 a/ b/ g/ n/ ac/ ax/ be
  • Supports Bluetooth® 5.4**, MLO, 4KQAM
• Internal IO:
  • 1x Power Connector(ATX_PWR)
  • 2x Power Connector(CPU_PWR)
  • 1x Power Connector(PCIE_PWR 8pin)
  • 1x CPU Fan
  • 1x Combo Fan (Pump_Sys Fan)
  • 3x System Fan
  • 2x Front Panel (JFP)
  • 1x Chassis Intrusion (JCI)
  • 1x Front Audio (JAUD)
  • 1x Com Port (JCOM)
  • 1x Tuning Controller connector(JDASH)
  • 3x Addressable V2 RGB LED connector (JARGB_V2)
  • 1x RGB LED connector(JRGB)
  • 1x TPM pin header(Support TPM 2.0)
  • 4x USB 2.0 ports
  • 2x USB 5Gbps Type A ports
  • 1x USB 10Gbps Type C ports
• LED Feature:
  • 4x EZ Debug LED
  • 1x EZ Memory Detection LED
• Operating System: Support for Windows® 11 64-bit
• Form Factor: mATX

WHAT’S IN THE BOX:

• MSI PRO B850M-A WIFI AM5 DDR5 M-ATX Motherboard x1
• SATA Cable x1
• EZ M.2 Clip II Remover x2
• EZ Wi-Fi Antenna x1
• 1 to 2 EZ Conn-Cable(V1) x1
• EZ M.2 Clip II x1
• EZ M.2 Clip II Remover x1
• Quick Installation Guide x1

Why MSI?

MSI has long understood the engineering required to transition generations of hardware without failure. For the South African system builder, choosing MSI is selecting a commitment to tested power delivery and advanced thermal structures, ensuring that your investment performs exactly as specified, day after day, resisting the thermal pressures common in our region. This quality is evident in every aspect of this AMD DDR5 motherboard, especially its support for the latest standards like PCIe 5.0 motherboard expansion.

Additional information