ASUS PRIME B850-PLUS WIFI AMD motherboard
- Ryzen 7000 Series /…
- AMD B850
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ASUS Open box
White ATX board for AM5 Ryzen 7000/8000/9000 CPUs with DDR5 up to 8000 MT/s, PCIe 5.0 graphics and M.2, Wi-Fi 6, 2.5Gb LAN, USB4 and front USB 20Gbps Type-C
The ASUS X870 AYW GAMING WIFI W is an ATX motherboard built for AMD Ryzen 7000, 8000 and 9000 series processors. It targets builders who want a white-themed platform with current-generation connectivity. The board delivers a full feature set for gaming and productivity workloads.
The voltage regulator module uses 12+2+1 80A DrMOS power stages on an 8-layer PCB with ProCool connectors. This design supplies stable current to the CPU socket during heavy multi-core loads or sustained overclocking. It is the specification that determines whether the board matches your power requirements.
Four DDR5 slots support up to 256GB at 8000+ MT/s via AMD EXPO profiles. One PCIe 5.0 x16 slot and one PCIe 5.0 M.2 slot connect directly to the CPU for graphics and storage. Additional chipset lanes provide extra M.2 and SATA ports. Wi-Fi 6 and 2.5Gb LAN handle networking, while USB4 and 20Gbps Type-C cover high-speed peripherals.
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| Product | |
|---|---|
| Brand name | ASUS |
| Model name | X870 AYW GAMING WIFI W |
| Part number | 90MB1LA0-MVAAY0 |
| Processor | |
| Processor | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| CPU socket | AM5 |
| Chipset | AMD X870 |
| Memory | |
| Memory slot count | 4 × 288pin (DDR5) |
| Supported memory | Up to 8000+MT/s (OC) |
| Max supported RAM | 256 GB |
| Memory channels | Dual Channel |
| Memory profiles | AMD EXPO |
| ECC support | Yes |
| Buffering | Un-buffered |
| Storage | |
| SATA ports | 4 x SATA 6Gb/s |
| M.2 slots | AMD 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 X870 Chipset M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)** ** Specifications vary by CPU types. |
| SATA and RAID support | 0/1/5/10 |
| Audio & video | |
| Sound channels | Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. |
| Connectivity | |
| Maximum network speed | 2.5 Gbit/s |
| Wi-Fi standard | Wi-Fi 802.11 ax |
| Bluetooth support | 5.2 |
| 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)** AMD X870 Chipset 2 x PCIe 4.0 x16 slots (support x1 mode) |
| Onboard USB headers | 1 x USB 20 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 4 additional USB 2.0 ports |
| 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 |
| Shipping weight | 1.95 kg |
| Package size | 356 × 267 × 76 mm |
| Compatibility | |
| Windows 11 support | Supported |
| More details | |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
It delivers up to 80 amps per stage across 12 Vcore phases plus two SoC and one auxiliary phase, giving the VRM enough headroom for sustained high-current loads from Ryzen 9000 processors without throttling.
The primary slot runs at PCIe 5.0 x16 with Ryzen 9000 or 7000 CPUs, so a modern GPU is limited only by its own PCIe 5.0 interface rather than the motherboard.
The heatsinks cover M.2_1 (2280) and M.2_2 (2242/2260/2280) and the tool-free Q-Latch works with standard motherboard standoff heights, so any single-sided or double-sided module in those lengths fits without extra screws.
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