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ATX motherboard in matte black with silver heatsinks and four DDR5 slots

MSI

MSI PRO B850-S WIFI6E ATX AMD motherboard

SKU CH-AWNH-4FTHN MPN PRO B850-S WIFI6E

ATX board for AMD Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 8200 MT/s, PCIe 5.0 M.2, 2.5G LAN and Wi-Fi 6E

  • CPU Socket TypeAM5
  • CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardSupport DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/
  • Maximum Memory Supported256GB
  • Ready for AMD Ryzen 9000, 8000 and 7000 series CPUs on AM5 socket
  • DDR5 memory scales to 8200 MT/s overclocked with AMD EXPO support
  • PCIe 5.0 x4 M.2 slot delivers top-tier storage bandwidth
  • 5 Gbps LAN plus Wi-Fi 6E gives fast, stable networking
  • 12+2+1 Duet Rail power with dual 8-pin CPU connectors handles heavy loads

Socket AM5 platform board

This ATX motherboard uses the AMD B850 chipset and AM5 socket to support Ryzen 7000, 8000 and 9000 series processors. It provides four DDR5 slots with a maximum capacity of 256 GB and dual-channel operation up to 8200 MT/s when overclocked. A 12+2+1 Duet Rail power system with dual 8-pin CPU connectors delivers stable current for high-core-count CPUs.

Suits builders wanting PCIe 5.0 storage

The primary M.2 slot runs at PCIe 5.0 x4 from the CPU, ideal for the fastest NVMe drives, while a second slot operates at PCIe 4.0 x4. Four SATA 6 Gb/s ports and a 2.5 GbE LAN port handle bulk storage and fast wired networking. Builders who need PCIe 5.0 graphics bandwidth or more than two M.2 slots should consider a different chipset.

Primary M.2 slot runs at PCIe 5.0 x4

M.2_1 is wired directly to the CPU and supports PCIe 5.0 x4 speeds with 22110 and 2280 form factors. This single specification determines whether the board can saturate the latest generation of high-performance solid-state drives.

Fordele

  • Ready for AMD Ryzen 9000, 8000 and 7000 series CPUs on AM5 socket
  • DDR5 memory scales to 8200 MT/s overclocked with AMD EXPO support
  • PCIe 5.0 x4 M.2 slot delivers top-tier storage bandwidth
  • 5 Gbps LAN plus Wi-Fi 6E gives fast, stable networking
  • 12+2+1 Duet Rail power with dual 8-pin CPU connectors handles heavy loads

Specifikationer

BrandMSI
ModelPRO B850-S WIFI6E
CPU Socket TypeAM5
CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Memory StandardSupport DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
Memory FeatureSupports CUDIMM, Clock Driver bypass mode only
PCI Express 4.0 x16PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)
PCI_E1 slot
- Supports PCIe 4.0 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)
PCI Express x4PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
PCI Express x1PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 22110/2280 devices
M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
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 (For Ryzen 9000/ 8700/ 8600/ 8400/ 7000 Series processors)
- Supports up to PCIe 4.0 x2 (For Ryzen 8500/ 8300 Series processors)
SATA RAIDSupports RAID 0, RAID 1, and RAID 10 for SATA storage devices
Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 ax
BluetoothBluetooth 5.3
Back I/O PortsClear CMOS Button
1 x DisplayPort
1 x 2.5G LAN
1 x USB 10Gbps Type-A
4 x USB 5Gbps Type-A
2 x Wi-Fi / Bluetooth
3 x Audio Connectors
Flash BIOS Button
1 x HDMI
2 x USB 10Gbps Type-A
1 x USB 10Gbps Type-C
Onboard USB4 x USB 2.0 ports
2 x USB 5Gbps Type A ports
1 x USB 10Gbps Type C ports
Other Connectors1 x CPU Fan
1 x Combo Fan (Pump_Sys Fan)
4 x System Fan
2 x Front Panel (JFP)
1 x Chassis Intrusion (JCI)
1 x Front Audio (JAUD)
1 x Com Port (JCOM)
1 x Tuning Controller connector(JDASH)
3 x Addressable V2 RGB LED connector (JARGB_V2)
1 x RGB LED connector(JRGB)
1 x TPM pin header(Support TPM 2.0)
Form FactorATX
LED Lighting4 x EZ Debug LED
1 x EZ Memory Detection LED
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x Power Connector(ATX_PWR)
2 x Power Connector(CPU_PWR)
Windows 11Supported
Forsendelsesvægt1.45 kg
Pakkestørrelse343 × 274 × 76 mm

Spørgsmål om denne vare

What does DDR5 8200 MT/s OC mean for my Ryzen 9000 build?

With a Ryzen 9000 processor, the board can run DDR5 kits at 8200 MT/s through AMD EXPO profiles, delivering higher bandwidth than the 5600 MT/s JEDEC baseline for memory-sensitive workloads.

How fast is the M.2_1 slot when I install a PCIe 5.0 x4 drive?

M.2_1 is wired to the CPU and supports PCIe 5.0 x4, so a compatible drive can reach Gen 5 sequential speeds; M.2_2 is limited to PCIe 4.0 x4 from the CPU.

Will this ATX board fit in my standard mid-tower case?

The board follows the ATX form factor with 288-pin DDR5 slots, dual 8-pin CPU power connectors, and standard mounting holes, so it fits any case that accepts ATX motherboards.

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