ASUS B850M AYW GAMING WIFI + Ryzen 9 9900X3D AMD motherboard CPU combo
- AM5
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AM5 motherboard with Ryzen 7 9800X3D, 16+2+1 80A power stages, DDR5 4400 support to 256GB, two PCIe 5.0 M.2 slots, WiFi 7, 2.5Gb LAN and dual USB4 40Gbps ports
Motherboard TUF GAMING X870-PLUS WIFI
CPU + R7 9800X3D
This bundle pairs the ASUS TUF GAMING X870-PLUS WIFI motherboard with an AMD Ryzen 7 9800X3D processor on the AM5 socket. It targets enthusiasts building a high-end gaming or AI workstation who want matched components ready for DDR5 memory and PCIe 5.0 expansion.
Four 288-pin slots support up to 256 GB of DDR5 4400 in dual-channel mode with ECC and EXPO profiles. That headroom handles heavy multitasking and large datasets, but the board maxes out at 256 GB and does not support buffered or registered modules.
The primary PCIe 5.0 x16 slot and two M.2 2280 slots run at PCIe 5.0 x4 with Ryzen 9000 or 7000 series CPUs, dropping to PCIe 4.0 with 8000 series. Rear I/O includes dual USB4 40 Gbps Type-C ports, 2.5 Gb Ethernet and WiFi 7, while front-panel USB 20 Gbps offers 30 W power delivery.
Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.
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| Product | |
|---|---|
| Brand name | ASUS |
| Model name | TUF GAMING X870-PLUS WIFI+R7 9800 × 3D |
| Processor | |
| Chipset | AMD X870 |
| Memory | |
| Memory slot count | 4 × 288pin (DDR5) |
| Supported memory | DDR5 4400 |
| Max supported RAM | 256 GB |
| Memory channels | Dual Channel |
| ECC support | Yes |
| Buffering | Un-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 chip | Realtek 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 channels | 7.1 Channels |
| Ports & slots | |
| PCIe 5.0 x16 slots | AMD Ryzen 9000 & 7000 Series Desktop Processors 1 x PCIe 5.0 x16 slot (supports x16 mode) |
| PCIe 4.0 x16 slots | AMD Ryzen 8000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x8/x4 mode) |
| Power | |
| Power connectors | 1 × 24-pin Main Power connector 2 × 8-pin +12 V CPU Power connectors |
| Size & build | |
| Form factor | ATX |
| Width and length | 12.0 in × 9.6 in |
| Compatibility | |
| Windows 11 support | Supported |
| More details | |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
Other versions of this model
Yes, the 16 plus 2 plus 1 phase VRM with 80A SPS power stages, 8-layer PCB, ProCool connectors, alloy chokes and durable capacitors is built for stable delivery to the included Ryzen 7 9800X3D.
The board has four 288-pin DDR5 slots supporting dual-channel up to 256GB; 4400 MT/s is the base JEDEC speed, and EXPO or AEMP profiles can raise frequency further.
The onboard USB 20Gbps header supports USB Type-C with up to 30W Power Delivery for fast-charging compatible devices.
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