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ATX motherboard with large grey heatsinks and AM5 socket, paired with Ryzen 9 9900X3D CPU

ASUS

ASUS TUF GAMING X870-PLUS WIFI AM5 AMD Motherboard & Ryzen 9 9900X3D CPU Combo

SKU CH-77W1-3JN4J

Socket AM5 motherboard and Ryzen 9 9900X3D combo with 16+2+1 80A power stages, four M.2 slots, Wi-Fi 7, 2.5Gb LAN, dual USB4 40Gbps and DDR5 256GB support

  • ChipsetAMD X870
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 4400
  • Max supported RAM256 GB
  • Memory channelsDual Channel

Model TUF GAMING X870-PLUS WIFI

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CPU + Ryzen 9 9900X3D

  • Stable delivery for heavy workloads with 16+2+1 80A SPS power stages
  • Simplified tuning via AI Overclocking, AI Cooling II and AEMP
  • Four M.2 slots including two PCIe 5.0 x4 for fast storage
  • Wi-Fi 7, 2.5Gb LAN and dual USB4 40Gbps for high-speed I/O
  • 12-core CPU with 128MB L3 cache and integrated Radeon graphics

Combo ready for AI workloads

The bundle pairs an ASUS TUF GAMING X870-PLUS WIFI motherboard with an AMD Ryzen 9 9900X3D processor. The board uses the AMD X870 chipset and AM5 socket, supporting Ryzen 9000, 8000 and 7000 series CPUs. Four DDR5 slots accept up to 256 GB of memory at 4400 MT/s with dual-channel operation and EXPO profiles. The 12-core CPU brings 128 MB of L3 cache, 12 MB of L2 cache and integrated Radeon graphics within a 120 W envelope.

PCIe 5.0 and USB4 set the ceiling

A single PCIe 5.0 x16 slot runs at x16 with Ryzen 9000 and 7000 processors, dropping to x8 or x4 with 8000 series chips. Two M.2 slots operate at PCIe 5.0 x4 and two more at PCIe 4.0 x4, all Key M 2280. Rear I/O includes two USB4 ports at 40 Gbps, three USB 10 Gbps Type-A, four USB 5 Gbps Type-A and one USB 2.0 port. Networking uses Wi-Fi 7 and a Realtek 2.5 Gb Ethernet controller, while audio runs through a Realtek ALC1220P 7.1 codec.

Power delivery built for sustained loads

The VRM uses a 16+2+1 phase design with 80 A SPS stages on an eight-layer PCB, fed by ProCool connectors, alloy chokes and durable capacitors. Cooling headers include a 4-pin CPU fan, CPU OPT, AIO pump, four chassis fans and a dedicated W_PUMP+ header. Three addressable Gen 2 headers drive RGB strips. Front-panel USB gains a 20 Gbps Type-C connector with 30 W power delivery plus a 5 Gbps header and two USB 2.0 headers. SATA 6 Gbps ports remain available alongside the M.2 array.

How it compares

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

Price $1,283.99
Pricier than about 91% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameTUF GAMING X870-PLUS WIFI+R9 9900 × 3D
Processor
ChipsetAMD X870
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryDDR5 4400
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA and RAID support* AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1. RAID 5 Funciton is only supportted by AMD Ryzen 9000 series CPU.
Audio & video
Audio chipRealtek 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
Sound channels7.1 Channels
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)
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
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

5 more in the same range

Questions about this item

Will the included Ryzen 9 9900X3D run on this board without a BIOS update?

The combo ships with the CPU already paired to the X870 chipset, so the processor is supported out of the box for the AM5 socket.

How many PCIe 5.0 M.2 drives can I install and are they heatsinked?

Two M.2 slots operate at PCIe 5.0 x4 and both are covered by large onboard heatsinks.

What memory speed does the board guarantee without manual tuning?

The default DDR5 standard is 4400 MT/s; higher speeds need EXPO or AEMP profiles enabled in BIOS.

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