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ASUS TUF Gaming B850M-Plus WiFi mATX motherboard with Ryzen 7 9800X3D CPU, dark grey heatsinks and yellow accents

ASUS

ASUS TUF GAMING B850M-PLUS WIFI AMD motherboard & Ryzen 7 9800X3D combo

SKU CH-CEV4-AAF2S

Combines an AMD AM5 micro-ATX board with 14+2+1 80A DrMOS stages, DDR5 up to 8000+ MT/s, PCIe 5.0 x16, three M.2 slots, Wi-Fi 6E, 2.5Gb LAN and USB 20Gbps Type-C with a Ryzen 7 9800X3D processor

  • 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 9800X3D

  • Ready for AMD Ryzen 9000, 8000 and 7000 series processors with AM5 socket
  • Stable power delivery via 14+2+1 80A DrMOS stages and 8-layer PCB
  • Fast storage with one PCIe 5.0 M.2 slot and two PCIe 4.0 M.2 slots
  • High-speed connectivity including Wi-Fi 6E, 2.5Gb Ethernet and USB 20Gbps Type-C
  • Comprehensive cooling with enlarged VRM, M.2 and PCH heatsinks plus Fan Xpert 4

Combo ready for AM5 gaming and AI workloads

This bundle pairs an ASUS TUF GAMING B850M-PLUS WIFI motherboard with an AMD Ryzen 7 9800X3D processor. The board uses the AMD B850 chipset on an AM5 socket and supports Ryzen 9000, 8000 and 7000 series CPUs. Four DDR5 slots accept up to 192 GB of memory running at 8000+ MT/s with EXPO and AEMP profiles. It targets builders who want a compact mATX platform for high-refresh gaming and emerging AI applications.

Thermals noise and power draw in normal use

The 14+2+1 80A DrMOS power stages sit on an 8-layer PCB with alloy chokes and durable capacitors, fed by dual 8+8 pin ProCool connectors for stable delivery. Enlarged VRM and M.2 heatsinks plus a PCH heatsink handle heat from the CPU and storage, while hybrid fan headers and Fan Xpert 4 software let you tune airflow. Wi-Fi 6E and 2.5 Gbps LAN add connectivity without extra cards that increase system power.

Upgrade path from older AM4 or early AM5 builds

Moving from an AM4 system or a first-gen AM5 board gains PCIe 5.0 on the primary x16 slot and M.2_1, plus a rear USB 20 Gbps Type-C port and front USB 10 Gbps Type-C header. The 2nd-gen 3D V-Cache design in the 9800X3D lifts gaming frame rates over non-X3D 7000 series chips. DIY features such as PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna and BIOS FlashBack simplify the swap.

Highlights

  • Ready for AMD Ryzen 9000, 8000 and 7000 series processors with AM5 socket
  • Stable power delivery via 14+2+1 80A DrMOS stages and 8-layer PCB
  • Fast storage with one PCIe 5.0 M.2 slot and two PCIe 4.0 M.2 slots
  • High-speed connectivity including Wi-Fi 6E, 2.5Gb Ethernet and USB 20Gbps Type-C
  • Comprehensive cooling with enlarged VRM, M.2 and PCH heatsinks plus Fan Xpert 4

Specifications

BrandASUS
ModelTUF GAMING B850M-PLUS WIFI+R7 9800X3D
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 9800X3D 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

How do I install the Ryzen 7 9800X3D into the AM5 socket on the TUF GAMING B850M-PLUS WIFI, and what step do builders often miss?

Align the triangle marker on the Ryzen 7 9800X3D with the socket corner, lower the CPU gently without force, close the retention arm, then connect both the 8-pin and the second 8-pin ProCool power cables; the extra 8-pin is frequently overlooked but required for the 14+2+1 80A DrMOS stages.

What maintenance or replacement will the TUF GAMING B850M-PLUS WIFI need during its service life?

Dust the enlarged VRM heatsink, the M.2 heatsink and the PCH heatsink regularly so the 14+2+1 80A DrMOS stages and the PCIe 5.0 M.2 slot stay cool; clean the hybrid fan headers and check Fan Xpert 4 curves if temperatures rise.

What limit appears first when the Ryzen 7 9800X3D and TUF GAMING B850M-PLUS WIFI run sustained heavy workloads?

The VRM thermal ceiling of the 14+2+1 80A DrMOS stages is reached before the CPU hits its own throttle point, so case airflow and fan-curve tuning in Fan Xpert 4 become the deciding factor for stable clocks.

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