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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 Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to 8000+MT/s (OC)
  • Maximum Memory Supported192GB
  • Channel SupportedDual Channel

Motherboard TUF GAMING B850M-PLUS WIFI

Struck-through versions exist but are not stocked here.

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.

Highlights

  • 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

Specifications

BrandASUS
ModelTUF GAMING B850M-PLUS WIFI+R7 9700X
CPU Socket TypeAM5
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Memory StandardUp to 8000+MT/s (OC)
Maximum Memory Supported192GB
Channel SupportedDual Channel
ECC SupportedYes
Buffer SupportedUn-buffered
Memory FeatureDual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot (supports x16 mode)
PCI Express 4.0 x16AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
PCI Express x1AMD B850 Chipset
1 x PCIe 4.0 x1 slot
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD 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 RAIDAMD 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 ChipsetRealtek ALC1220P
Audio 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
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 ax
BluetoothBluetooth 5.3
Back I/O Ports1 x USB 20Gbps port (1 x USB Type-C)
3 x USB 10Gbps ports (3 x Type-A)
4 x USB 5Gbps ports (4 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
5 x Audio jacks
1 x BIOS FlashBack button
Onboard USB1 x USB 10Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 3 additional USB 2.0 ports
Other ConnectorsFan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 x 4-pin Chassis Fan headers
Miscellaneous
3 x Addressable Gen 2 headers
1 x Clear CMOS header
1 x Chassis Intrusion header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x 10-1 pin Front System Panel header
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connectors
BIOS Feature256 Mb Flash ROM, UEFI AMI BIOS
SoftwareASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 4
- Power Saving
ASUS DriverHub
ASUS GlideX
TurboV Core
TUF GAMING CPU-Z
DTS Audio Processing
Norton 360 for Gamers (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey
Windows 11Supported
FeaturesASUS TUF PROTECTION
- DIGI+ VRM (- Digital power design with DrMOS)
- ESD Guards
- TUF LANGuard
- Overvoltage protection
- SafeSlot
- Stainless-steel back I/O
ASUS Q-Design
- M.2 Q-Latch
- PCIe Slot Q-Release
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
ASUS Thermal Solution
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- ProCool
- Pre-mounted I/O shield
- SafeDIMM
Aura Sync
- Addressable Gen 2 headers
Package Contents1 x AMD Ryzen 7 9700X CPU
1 x Shin-Etsu X-23-7868-2D (1.8g)
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x TUF GAMING sticker
2 x M.2 rubber packages
1 x Screw package for M.2 SSD
Documentation
1 x Quick start guide

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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