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ATX motherboard with silver-grey steel heatsinks and black PCB

ASRock

ASRock B850 Steel Legend WiFi AMD motherboard AM5 14+2+1 phase 80A Dr.MOS DDR5 8000+ 256GB

SKU CH-3CH0-C4D4Q MPN B850 Steel Legend WiFi

ATX AM5 board with 14+2+1 phase 80A Dr.MOS, DDR5 up to 8000+ OC and 256GB capacity, PCIe 5.0 x16, one Blazing M.2 Gen5 x4, three Hyper M.2 Gen4 x4, four SATA, Dragon RTL8125BG LAN, Wi-Fi and 7.1 audio

  • 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 B850 Steel Legend WiFi

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

  • 14+2+1 phase power with 80A Dr.MOS delivers stable CPU voltage
  • DDR5 up to 8000+ MT/s across four slots supports 256GB capacity
  • PCIe 5.0 x16 slot runs at full speed with Ryzen 9000 and 7000 CPUs
  • Blazing M.2 at Gen5x4 plus three Hyper M.2 at Gen4x4 for fast storage
  • Realtek ALC4082 7.1-channel audio with Nahimic enhancement for clear sound

Built for Ryzen 9000 8000 7000

The ASRock B850 Steel Legend WiFi is an ATX motherboard for AMD Socket AM5. It supports Ryzen 9000 8000 and 7000 series processors with a 14+2+1 phase power design using 80A Dr.MOS. Four DDR5 slots accept up to 256GB at 8000+(OC) with AMD EXPO and Intel XMP 3.0 profiles.

Installation is straightforward for ATX builders

The board fits standard ATX cases and uses a familiar 24-pin plus 8-pin CPU power layout. Four 288-pin DDR5 slots are spaced for most coolers. One PCIe 5.0 x16 slot runs at Gen5x16 with 9000 and 7000 CPUs but drops to Gen4x8 with 8000 Phoenix 1 and Gen4x4 with 8000 Phoenix 2. M.2 shields require screws and the front USB 3.2 Gen2x2 Type-C header needs a matching case port.

Suits mainstream enthusiasts and daily users

This board fits builders who want strong VRM cooling 7.1 audio and WiFi without flagship pricing. Four M.2 slots and four SATA ports cover most storage needs. Users planning heavy multi-GPU setups or needing 10GbE should look at higher-end chipsets. Those building in small form factor cases need a micro-ATX or mini-ITX alternative.

Points forts

  • 14+2+1 phase power with 80A Dr.MOS delivers stable CPU voltage
  • DDR5 up to 8000+ MT/s across four slots supports 256GB capacity
  • PCIe 5.0 x16 slot runs at full speed with Ryzen 9000 and 7000 CPUs
  • Blazing M.2 at Gen5x4 plus three Hyper M.2 at Gen4x4 for fast storage
  • Realtek ALC4082 7.1-channel audio with Nahimic enhancement for clear sound

Caractéristiques

BrandASRock
ModelB850 STEEL LEGEND WIFI
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*
* PCIE1 will run at Gen5x16 with 9000 and 7000 series processors, Gen4x8 with 8000 (Phoenix 1) series processors and Gen4x4 with 8000 (Phoenix 2) series processors.
* If M2_4 is occupied, PCIE2 will be disabled.
* Supports NVMe SSD as boot disks
- 15µ Gold Contact in VGA PCIe Slot (PCIE1)
PCI Express 4.0 x161 x PCIe 4.0 x16 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_2, Key M), supports type 2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2230/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
- 1 x Hyper M.2 Socket (M2_4, Key M), supports type 2260/2280 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 and Gen4x4 with 8000 (Phoenix 1 and Phoenix 2) series processors.
SATA RAID0/1/10
Audio ChipsetRealtek ALC4082
Audio Channels7.1 Channels
LAN ChipsetDragon RTL8125BG
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Back I/O Ports2 x Antenna Ports
1 x HDMI Port
1 x Optical SPDIF Out Port
2 x USB 3.2 Gen 2 Type-C Ports (10 Gb/s)
3 x USB 3.2 Gen 1 Type-A Ports*
2 x USB 3.2 Gen 2 Type-A Ports (10 Gb/s)**
4 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
1 x Line Out Jack (Gold Audio Jack)
1 x Microphone Input Jack (Gold Audio Jack)
* USB32_12 are Lightning Gaming Ports.
** USB32_34 supports Ultra USB Power
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 Gen2x2 Header (20 Gb/s)
Other Connectors1 x SPI TPM Header
1 x Thermistor Cable 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 AIO Pump Fan Connector (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, CHA_FAN1~3 and AIO_PUMP support the fan power up to 3A (36W).
*** CPU_FAN2, CHA
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
BIOS Feature256Mb AMI UEFI Legal BIOS with GUI support
SoftwareSoftware
- ASRock Motherboard Utility (A-Tuning)
- ASRock Dragon 2.5G LAN Software
- ASRock Polychrome SYNC
* These utilities can be downloaded from ASRock Live Update & APP Shop.
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
Windows 11Windows OS 10 64-bit / 11 64-bit
FeaturesSuperb Productivity
- PCIe Gen5 (Graphics, M.2)
- Dual Channel DDR5
Rock-Solid Durability
- 14+2+1 Power Phase, 80A Dr.MOS for VCore+SOC+MISC with Enlarged
Heatsink Armor
- Flexible Integrated I/O Shield
- 20K Long-lasting Black Caps (high quality and conductive polymer capacitors)
Ultrafast Connectivity
- 2.5G LAN, 802.11be Wi-Fi 7 Module
- ASRock Lightning Gaming Ports
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
1 x Thermistor Cable
Poids d’expédition1.81 kg
Dimensions du colis356 × 279 × 76 mm

Autres versions de ce modèle

5 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

How can I confirm the 14+2+1 phase 80A Dr.MOS VRM is delivering stable power after I build the system?

Enter the BIOS and watch the VCore and SOC voltage readings under load; low ripple and steady values matching the 20K 1000uF capacitor spec show the power phase is working as intended.

What comes in the box with the B850 Steel Legend WiFi and which essential parts must I buy separately?

The motherboard, I/O shield, SATA cables, M.2 screws and driver disc are included; you must purchase an AM5 Ryzen 7000, 8000 or 9000 series CPU, DDR5 memory modules, storage drives and a PSU separately.

Which memory kit should I choose to reach the 8000+ OC ceiling on the four 288-pin DDR5 slots?

Pick a 2x 16GB or 4x 16GB DDR5 EXPO kit rated at 8000 MT/s or higher; populating all four slots with matched modules lets the dual-channel controller hit the 256GB maximum at the advertised overclock speed.

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