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White micro ATX motherboard with silver heatsinks and four black DDR5 slots

ASRock

ASRock B850M Pro RS WiFi White AMD motherboard

SKU CH-0WV6-94RQS MPN B850M Pro RS WiFi White

Micro-ATX AM5 board with a 10-phase DrMOS VRM, DDR5 to 8000 MT/s, one PCIe 5.0 M.2 and Wi-Fi

  • CPU Socket TypeAM5
  • CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to 8000+(OC)
  • Maximum Memory Supported256GB

Option B850M Pro RS WiFi White

Les versions barrées existent, mais ne sont pas disponibles ici.

  • Supports Ryzen 7000 8000 9000 series processors via AM5 socket
  • 128 Gb/s PCIe 5.0 M.2 slot for fastest storage performance
  • 8000+ MHz DDR5 memory overclocking with EXPO and XMP 3.0
  • 256 GB maximum DDR5 capacity across four DIMM slots
  • 15 µm gold PCIe contacts for reliable graphics card connection

Socket AM5 DDR5 platform

The ASRock B850M Pro RS WiFi White is a Micro ATX motherboard built around the AMD B850 chipset for Socket AM5 processors. It accepts Ryzen 7000 Series, Ryzen 8000 Series and Ryzen 9000 Series CPUs with an 8+2+1 phase Dr.MOS power design. Four DDR5 DIMM slots support dual-channel memory up to 256 GB at speeds of 8000+(OC) via AMD EXPO or Intel XMP 3.0 profiles, with ECC capability on un-buffered modules.

Builders who need Gen5 M.2 and 5.0 x16

This board suits compact systems that want a PCIe 5.0 x16 slot with 15µ gold contacts and a CPU-attached Blazing M.2 socket running at Gen5x4 128 Gb/s. Two additional chipset Hyper M.2 sockets provide Gen4x4 64 Gb/s each, while four SATA 6Gb/s ports handle mass storage. Realtek ALC897 7.1-channel audio with Nahimic and Dragon RTL8125BG LAN round out the feature set. Builds requiring more than one PCIe 5.0 x16 slot or higher integrated wireless specifications should consider other options.

One CPU Blazing M.2 at Gen5x4 128 Gb/s

The single specification that decides fitment is the CPU-connected M2_1 socket, which operates at PCIe Gen5x4 128 Gb/s and serves as the first priority for M.2 installation. This lane allocation is fixed by the processor and chipset, so NVMe SSDs needing that bandwidth must occupy M2_1. The remaining M.2 sockets and the PCIe 4.0 x4 slot share chipset lanes, making M2_1 the decisive factor for peak storage throughput.

Points forts

  • Supports Ryzen 7000 8000 9000 series processors via AM5 socket
  • 128 Gb/s PCIe 5.0 M.2 slot for fastest storage performance
  • 8000+ MHz DDR5 memory overclocking with EXPO and XMP 3.0
  • 256 GB maximum DDR5 capacity across four DIMM slots
  • 15 µm gold PCIe contacts for reliable graphics card connection

Caractéristiques

BrandASRock
ModelB850M Pro RS WiFi White
CPU Socket TypeAM5
CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Memory StandardUp to 8000+(OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO / Intel XMP 3.0
ECC SupportedYes
Buffer SupportedUn-buffered
PCI Express 5.0 x161 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*
- 15µ Gold Contact in VGA PCIe Slot (PCIE1)
PCI Express x41 x PCIe 4.0 x4 Slot (PCIE2), supports x4 mode*
Serial ATA (SATA)4 x SATA 6Gb/s
M.2CPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode*
- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode*
*Supports NVMe SSD as boot disks
M2_1 is the first priority for M.2 installation.
M2_1 will run at Gen5x4 with 9000 and 7000 series processors, Gen4x4 with 8000 (Phoenix 1) series processors and Gen4x2 with 8000 (Phoenix 2) series processors.
If M2_3 is occupied, PCIE2 will be disabled.
SATA RAID0/1/10
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetDragon RTL8125BG
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 axe
BluetoothBluetooth 5.3
Back I/O Ports2 x Antenna Ports
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)
1 x USB 3.2 Gen2 Type-C Port
2 x USB 3.2 Gen1 Ports
4 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone
Onboard USB2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header
Other Connectors1 x SPI TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
3 x Addressable LED Headers**
2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)***
3 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)***
1 x Front Panel Audio Connector
*Supports in total up to 12V/3A, 36W LED Strip
**Support in total up to 5V/3A, 15W LED Strip
***CPU_FAN1 supports the fan power up to 1A (12W).
CPU_FAN2 and CHA_FAN1~3 support the fan power up to 3A (36W).
CPU_FAN2 and CHA_FAN1~3 can auto detect if 3-pin or 4-pin fan is in use.
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
1 x 4 pin 12V Power Connector (Hi-Density Power Connector)
SoftwareSoftware
- ASRock Motherboard Utility (A-Tuning)
- ASRock Dragon 2.5G LAN Software
- ASRock Polychrome SYNC
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
Windows 11Supported
FeaturesSuperb Productivity
- PCIe Gen5 (Graphics, M.2)
- Dual Channel DDR5
Rock-Solid Durability
- 8+2+1 Power Phase, Dr.MOS for VCore+SOC+MISC
- Pre-Installed I/O Shield
Ultrafast Connectivity
- 2.5G LAN, 802.11axe Wi-Fi 6E Module
EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
EZ Troubleshooter
- ASRock Post Status Checker
Package Contents2 x SATA Data Cables
2 x ASRock WiFi 2.4/5/6 GHz Antennas
Poids d’expédition1.18 kg
Dimensions du colis279 × 254 × 76 mm

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Questions sur cet article

Will a Micro ATX case with standard standoffs accept this board?

Yes, the Micro ATX form factor uses the standard mounting hole pattern found in compatible cases.

Does the 15µ gold contact PCIe 5.0 x16 slot need any extra step when seating a graphics card?

Press the card firmly until the retention latch clicks; the gold contacts do not change the installation method.

Which M.2 slot should hold the primary NVMe drive for Gen5x4 speed?

Install the boot drive in the M2_1 Blazing M.2 socket, which runs at PCIe Gen5x4 with Ryzen 9000 series CPUs.

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