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ATX motherboard in matte black with silver heatsinks and yellow accents

ASUS

ASUS TUF GAMING B850-PLUS WIFI AMD AM5 B850 ATX motherboard

SKU CH-KD9Y-1ZJ3Q

Supports Ryzen 9000, 8000 and 7000 CPUs with 14+2+1 80A power stages, DDR5 up to 8000 MT/s, one PCIe 5.0 M.2 plus two PCIe 4.0 M.2 slots, Wi-Fi 7, 2.5Gb LAN and rear USB 20Gbps Type-C

  • CPU socketAM5
  • ChipsetAMD B850
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 8000+MT/s (OC)
  • Max supported RAM192 GB
  • Stable CPU power from 14+2+1 80A DrMOS stages and 8-layer PCB
  • Fastest storage via one PCIe 5.0 M.2 slot plus two PCIe 4.0 M.2 slots with heatsinks
  • Wi-Fi 7 and 2.5Gb Ethernet plus rear USB 20Gbps Type-C and front USB 10Gbps Type-C
  • VRM, PCH and three M.2 heatsinks with hybrid fan headers and Fan Xpert 4
  • PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna, Q-Dashboard, Q-LED and BIOS FlashBack

Socket AM5 platform

The ASUS TUF GAMING B850-PLUS WIFI motherboard is built for AMD Ryzen 9000, 8000 and 7000 series processors. It supports up to 192GB of DDR5 memory across four 288-pin slots and runs dual-channel at speeds up to 8000+ MT/s with EXPO and AEMP profiles. A 14+2+1 80A DrMOS power stage array on an 8-layer PCB delivers stable current for high-core-count CPUs.

Thermals and power delivery

Enlarged VRM heatsinks, three M.2 heatsinks and a PCH heatsink form the core of the cooling solution. Hybrid fan headers connect to Fan Xpert 4 software for automated curve control. Dual 8+8 pin ProCool connectors feed the 80A power stages, keeping voltage steady under sustained multi-threaded workloads without excessive acoustic output.

DIY features and connectivity

PCIe Slot Q-Release and M.2 Q-Latch simplify GPU and SSD installation. Q-Dashboard and Q-LED give instant component-status feedback, while BIOS FlashBack updates firmware without a CPU. Rear I/O includes Wi-Fi 7, 2.5Gb Ethernet, USB 20Gbps Type-C, HDMI and DisplayPort. A front USB 10Gbps Type-C header and Thunderbolt (USB4) header are also provided.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $126.99
Cheaper than about 68% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameTUF GAMING B850-PLUS WIFI
Part number90MB1J30-M0AAY0
Processor
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to 8000+MT/s (OC)
Max supported RAM192 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
SATA and RAID supportAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1/5/10. *
*RAID 5 Function is only supported by AMD Ryzen 9000 series CPU.
Audio & video
Audio chipRealtek ALC1220P
Sound channelsRealtek ALC1220P 7.1 Surround Sound High Definition Audio CODEC
- Impedance sense for front and rear headphone outputs
- Internal audio Amplifier to enhance the highest quality sound for headphone and speakers
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- High quality 120 dB SNR stereo playback output and 113 dB SNR recording input (Line-in)
- Supports up to 32-Bit/192 kHz playback*
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
- Audio cover
- Unique de-pop circuit
* Due to limitations in HDA bandwidth, 32-Bit/192
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot (supports x16 mode)
PCIe x1 slots2 x PCIe 4.0 x1
Onboard USB headers1 x USB 10 Gbit/s connector (supports USB Type-C)
1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connectors
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported
In the box
In the boxCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x TUF GAMING sticker
2 x M.2 rubber packages
Documentation
1 x Quick start guide
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Questions about this item

How do I install the CPU cooler so the AM5 socket back-plate stays aligned?

The pre-mounted I/O shield keeps the board steady while you seat the processor; tighten the cooler in a cross pattern so the 14+2+1 80A VRM heatsink contacts evenly.

Which onboard component will need attention after prolonged operation?

The three M.2 heatsinks and enlarged VRM heatsink rely on case airflow; clean dust from their fins periodically to maintain thermal performance.

What limit appears first when the 14+2+1 80A power stages run sustained heavy loads?

VRM temperature rises until the Fan Xpert 4 curves ramp the hybrid fan headers; adequate case flow prevents throttling.

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