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ASUS TUF Gaming B850M-PLUS WIFI mATX board with Ryzen 7 9700X CPU in AM5 socket

ASUS

ASUS TUF GAMING B850M-PLUS WIFI & Ryzen 7 9700X AMD motherboard CPU combo

SKU CH-A0AC-GX4NM

An AM5 motherboard and 8-core Ryzen 7 9700X combo with 14+2+1 80A DrMOS power, DDR5 up to 8000 MT/s, PCIe 5.0 M.2, Wi-Fi 6E and 2.5Gb LAN

  • CPU socketAM5
  • ChipsetAMD B850
  • Form factorMicro ATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 8000+MT/s (OC)
  • Max supported RAM192 GB

Motherboard TUF GAMING B850M-PLUS WIFI

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CPU + Ryzen 7 9700X

  • 8-core 16-thread Ryzen 7 9700X delivers 5.5 GHz boost for high frame-rate gaming
  • 14+2+1 80A DrMOS stages on an 8-layer PCB give stable power to the CPU
  • One PCIe 5.0 and two PCIe 4.0 M.2 slots with a massive heatsink for fast storage
  • Wi-Fi 6E, 2.5Gb Ethernet, rear USB 20Gbps Type-C and front USB 10Gbps Type-C for quick data transfer
  • Enlarged VRM and M.2 heatsinks plus PCH heatsink with Fan Xpert 4 keep temperatures low

Combo purpose

This bundle pairs an ASUS TUF GAMING B850M-PLUS WIFI motherboard with a Ryzen 7 9700X processor. The board uses the AMD B850 chipset on an AM5 socket and the CPU delivers 8 cores and 16 threads with a 5.5 GHz max boost clock. It targets gamers and creators who want a ready-to-build platform for high-refresh gaming and multi-threaded workloads.

Compatibility checklist

Verify that your chassis accepts a micro-ATX board and that the power supply provides two 8-pin CPU connectors for the 14+2+1 80A DrMOS stages. You will need DDR5 modules; the board runs four 288-pin slots up to 8000 MT/s with a 192 GB ceiling and supports EXPO and AEMP profiles. Ensure your graphics card fits a single PCIe 5.0 x16 slot and that any M.2 drives match the 2280, 2260 or 2242 form factors.

Upgrade context

The combination replaces an older AM4 system or an entry-level AM5 build by adding PCIe 5.0 for the primary M.2 and GPU slot, Wi-Fi 6E, 2.5 Gbps LAN and rear USB 20 Gbps Type-C. The jump is worthwhile when you need the 8000 MT/s memory headroom, the 7.1 audio codec with front-panel impedance sensing, or the Q-Release and Q-Latch DIY features for easier maintenance.

How it compares

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

Price $576.99
Pricier than about 69% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameTUF GAMING B850M-PLUS WIFI+R7 9700X
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
M.2 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)**
AMD B850 Chipset
M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
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 ax
Bluetooth support5.3
Ports & slots
PCIe 5.0 x16 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot (supports x16 mode)
PCIe 4.0 x16 slotsAMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
PCIe x1 slotsAMD B850 Chipset
1 x PCIe 4.0 x1 slot
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 3 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connectors
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Compatibility
Windows 11 supportSupported
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

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Questions about this item

Will the Ryzen 7 9700X fit the AM5 socket on this board without a BIOS update?

The CPU and motherboard share the AM5 socket, so the processor seats directly; the board ships with a BIOS that supports Ryzen 9000 series out of the box.

What DDR5 speed can I run with the included CPU and four populated slots?

The board validates up to 8000+ MT/s when overclocked; with four sticks installed the practical ceiling is lower, so check the QVL for your kit.

Does the combo include a cooler or must I buy one separately?

The processor is sold unlocked and does not ship with a cooler, so you will need an AM5-compatible air or liquid cooler before first boot.

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