ASUS PRIME B850-PLUS WIFI AMD motherboard
- Ryzen 7000 Series /…
- AMD B850
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ASUS Open box
Socket AM5 ATX board with 18+2+2 power stages, DDR5 up to 8600 MT/s, three PCIe 5.0 M.2 slots, Wi-Fi 7 and dual 5 Gbps plus 2.5 Gbps LAN
This motherboard is built for AMD Ryzen 7000, 8000 and 9000 series processors on the AM5 socket. It targets enthusiasts who want a platform prepared for demanding AI workloads and high-speed connectivity. The X870E chipset and robust 18+2+2 power stage design deliver the headroom these CPUs require.
Four DDR5 slots support up to 256GB of memory with EXPO profiles and speeds reaching 8600+ MT/s on Ryzen 8000 series. Five M.2 slots provide three PCIe 5.0 and two PCIe 4.0 interfaces for fast storage expansion. Dual LAN at 5Gbps and 2.5Gbps plus Wi-Fi 7 handles heavy network traffic. The board runs out of PCIe 5.0 lanes when both x16 slots and the third M.2 are populated simultaneously.
The 18+2+2 power stage layout rated at 110A per stage is the single specification that determines suitability. It dictates how far the CPU can be pushed under sustained AI or compute loads without throttling. If the build demands maximum overclocking headroom on Ryzen 9000 series, this power design is the deciding factor.
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| Product | |
|---|---|
| Brand name | ASUS |
| Model name | ROG CROSSHAIR X870E HERO |
| Part number | 90MB1IE0-M0AAY0 |
| Processor | |
| Processor | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| CPU socket | AM5 |
| Chipset | AMD X870E |
| Memory | |
| Memory slot count | 4 × 288pin (DDR5) |
| Supported memory | DDR5 4400 / DDR5 4800 |
| 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 2242/2260/2280 (supports PCIe 5.0 x4 mode) M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode) M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode) AMD Ryzen 8000 Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) M.2_2 slot (Key M), type 2242/2260/2280 (Not supports) M.2_3 slot (Key M), type 2242/2260/2280 (Not supports) AMD X870E Chipset M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) M.2_5 slot (Key M), type 2280 (su |
| Audio & video | |
| Audio chip | ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4082* - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking - High quality 120 dB SNR stereo playback output and 110 dB SNR recording input - Supports up to 32-Bit/384 kHz playback on front panel Audio Features - SupremeFX Shielding Technology - ESS® ES9219 QUAD DAC - Gold-plated audio jacks - Rear optical S/PDIF out port - Premium audio capacitors * The LINE OUT port on the rear panel does not support spatial audio. If you wish to use spatial a |
| Sound channels | 7.1 Channels |
| Connectivity | |
| Maximum network speed | 5 Gbit/s + 2.5 Gbit/s |
| Wi-Fi standard | Wi-Fi 802.11 be |
| Bluetooth support | 5.4 |
| Ports & slots | |
| Onboard USB headers | 2 x USB 20 Gbit/s connectors (support USB Type-C) 2 x USB 5 Gbit/s headers support 4 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 connector 1 × 8-pin PCIe Power connector |
| Size & build | |
| Form factor | ATX |
| Width and length | 12.0 in × 9.6 in |
| Shipping weight | 3.97 kg |
| Package size | 362 × 305 × 112 mm |
| Compatibility | |
| Windows 11 support | Supported |
| More details | |
| BIOS | 256Mb Flash ROM, UEFI AMI BIOS |
Yes, the board supports DDR5 4400 and DDR5 4800 as standard JEDEC speeds, so your modules will operate at 4800 MT/s without overclocking.
Enter the UEFI and open the Hardware Monitor; it reports real-time Vcore, phase current and temperature for each of the 18+2+2 110 A stages so you can verify they are all operating.
The package supplies M.2 screws and pre-cut thermal pads for all five slots — three PCIe 5.0 and two PCIe 4.0 — so no separate mounting hardware is required.
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