MSI PRO B850M-A WIFI PZ

  • 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, 6-layer PCB made by 2oz thickened copper and server-grade level material
  • EZ DIY: EZ M.2 Clip II, EZ PCIe Clip II, and EZ Antenna
  • 5G LAN with Wi-Fi 7 Solution: the latest solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
  • Lightning Fast Game experience: PCIe 5.0 slot and Lightning Gen 5 x4 M.2
  • Audio Boost: Reward your ears with studio-grade sound quality for the most immersive gaming experience
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Specification Details
Chipset AMD B850
CPU Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors
Socket AM5
Memory
Configuration 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory Support DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
Ryzen 9000 Series Max Overclocking Frequency 1DPC 1R: Up to 8200+ MT/s
1DPC 2R: Up to 6400+ MT/s
2DPC 1R: Up to 6400+ MT/s
2DPC 2R: Up to 6000+ MT/s
Features Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPO
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only*
Notes * CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot.
– Certain CPUs may fail to boot, but future BIOS updates will improve compatibility.
– The DIMM slots on this motherboard only have single-sided latches.
– Memory compatibility and supported speeds depend on CPU and configuration. Visit https://www.msi.com/support/ for more information.
Onboard Graphics
Ports 1x HDMI
Supports HDMI 2.1, maximum resolution 4K 60Hz*
1x DisplayPort
Supports DisplayPort 1.4, maximum resolution 4K 60Hz*
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on CPU installed.
Expansion Slots
Slots 4x PCI-E x16 Slots
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 3.0 supports up to x1 (From Chipset)
PCI_E4 Gen PCIe 4.0 supports up to x4 (From Chipset)
PCI_E1 Slot – PCIe 5.0 x16 (Ryzen 9000 / 7000)
– PCIe 4.0 x8 (Ryzen 8700 / 8600 / 8400)
– PCIe 4.0 x4 (Ryzen 8500 / 8300)
Notes * PCI_E2, PCI_E3 & PCI_E4 share bandwidth. The PCI_E3 slot will run at x2 speed when devices are installed in the PCI_E2 or PCI_E4 slot.
Audio
Codec Realtek ALC897
Channels 7.1-Channel High Definition Audio
Storage
Configuration 2x M.2
M.2_1 (From CPU): PCIe 5.0 x4, supports 2280/2260 devices
M.2_2 (From CPU): PCIe 4.0 x4, supports 2280/2260 devices
4x SATA 6G
M.2_1 Slot – PCIe 5.0 x4 (Ryzen 9000 / 7000)
– PCIe 4.0 x4 (Ryzen 8000)
M.2_2 Slot – PCIe 4.0 x4
– PCIe 4.0 x2 (Ryzen 8500 / 8300)
Notes * Refer to the manual for M.2 SSD heatsink restrictions.
RAID
Support Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
USB
Configuration 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
Port Realtek 8126 5G LAN
Internal I/O
Connectors 1x ATX Power (ATX_PWR)
2x CPU Power (CPU_PWR)
1x PCIE Power (8-pin)
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 (JARGB_V2)
1x RGB LED (JRGB)
1x TPM Header (Supports TPM 2.0)
4x USB 2.0 Ports
2x USB 5Gbps Type-A Ports
1x USB 10Gbps Type-C Port
Wireless LAN & Bluetooth
Type Wi-Fi 7
Module Pre-installed in M.2 (Key-E) slot
Performance 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
Notes * 6GHz band support may depend on country regulations; Wi-Fi 7 will be available in Windows 11 version 24H2.
** The Bluetooth version may update; check the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 supported in Windows 11 version 24H2.
LED Features
Indicators 4x EZ Debug LED
1x EZ Memory Detection LED
Back Panel Ports
Configuration

  1. Clear CMOS Button
  2. DisplayPort
  3. USB 10Gbps Type-A
  4. USB 10Gbps Type-A
  5. USB 5Gbps Type-A
  6. 5G LAN
  7. Wi-Fi / Bluetooth
  8. Audio connectors
  9. Flash BIOS Button
  10. HDMI™
  11. USB 10Gbps Type-C
  12. USB 5Gbps Type-A
Operating System
Support Windows 11 64-bit
Box Content
INCLUDES
PCB INFO
mATX
243.84mmx243.84mm

Overview

MSI PRO B850M-A WIFI PZ – Professional Power, Compact Design

The MSI PRO B850M-A WIFI PZ is built for professionals, creators, and PC enthusiasts who demand exceptional performance in a micro-ATX form factor. Designed to support AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors, this motherboard combines cutting-edge technology, rock-solid reliability, and efficient power delivery for modern computing needs.

With dual-channel DDR5 memory support up to 8200+ MT/s (OC), the PRO B850M-A WIFI PZ delivers outstanding speed and responsiveness, perfect for multitasking, productivity, and high-performance gaming. The Direct 8+2+1 Power System featuring 60A Smart Power Stages (SPS) and 8+4-pin CPU power connectors ensures clean and stable power delivery for consistent performance. Technologies like Core Boost and Memory Boost further enhance efficiency and reliability under heavy workloads.

Built with a 6-layer PCB made from 2oz thickened copper and server-grade materials, this board ensures superior signal integrity, durability, and thermal performance. The Frozr Guard system, featuring extended heatsinks, 7W/mK thermal pads, choke pads, and M.2 Shield Frozr, keeps your system cool and stable even during intense operation.

For next-generation connectivity, it features a PCIe 5.0 slot and Lightning Gen 5 x4 M.2, providing unmatched bandwidth for high-speed storage and graphics. Networking is powered by 5G LAN and Wi-Fi 7, delivering secure, stable, and ultra-fast data transfer for professional and multimedia workloads.

The EZ DIY design with EZ M.2 Clip II, EZ PCIe Clip II, and EZ Antenna makes building and upgrading effortless. Meanwhile, Audio Boost technology offers studio-grade sound quality for an immersive gaming and entertainment experience.

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