MSI Pro B850-S Wifi6e DDR5 AMD Motherboard

The MSI PRO B850-S WiFi 6E is an ATX form-factor motherboard built on the AMD B850 chipset, designed for professionals and productivity-focused builders who want a clean, future-ready platform without unnecessary extras. Its understated black aesthetic integrates seamlessly into dark PC builds, while the engineering beneath the surface is built for demanding workloads. At the core of the connectivity stack is Wi-Fi 6E (802.11ax) with support for 2.4 GHz, 5 GHz, and 6 GHz bands at up to 2.4 Gbps over 160 MHz channels, complemented by MU-MIMO TX/RX and Bluetooth 5.3. Wired networking is handled by a Realtek RTL8125 2.5G LAN controller, providing low-latency, high-throughput connectivity for demanding data transfers and online workloads. The board accommodates AMD Ryzen 9000, 8000, and 7000 series processors via the AM5 socket and includes dual CPU power connectors alongside a 12+2+1 digital power phase design to support sustained high-performance operation. Memory is handled by four DDR5 UDIMM slots supporting up to 256 GB, with JEDEC speeds from 4800 to 5600 MT/s and overclocked profiles reaching up to 8200+ MT/s (1DPC 1R) via AMD EXPO and manual XMP-style tuning. Dual-channel operation is supported. Storage options include two M.2 slots — the primary M.2_1 (from CPU) supports PCIe 5.0 x4 for Ryzen 9000/7000 processors and is covered by MSI's M.2 Shield Frozr heatsink, while M.2_2 supports PCIe 4.0 x4. Four SATA 6 Gbps ports round out storage connectivity. RAID configurations include RAID 0, 1, and 10 for SATA, and RAID 0 and 1 for NVMe. Expansion slots include two PCIe x16 physical slots and one PCIe x1 slot: PCI_E1 runs at PCIe 4.0 x16 (for Ryzen 9000/7000) from the CPU, while PCI_E3 runs at PCIe 4.0 x4 from the chipset. USB connectivity is comprehensive, with 10 Gbps Type-A and Type-C ports on both the rear panel and front-panel headers. Onboard display outputs include HDMI 2.1 and DisplayPort 1.4, both capable of up to 4K 60 Hz when using a processor with integrated graphics. Audio is driven by a Realtek ALC897 codec delivering 7.1-channel HD audio. Internal RGB is supported through three ARGB V2 headers and one standard RGB header. EZ Debug LEDs and an EZ Memory Detection LED aid rapid troubleshooting. The board also includes a Flash BIOS button and Clear CMOS button on the rear I/O panel, plus a TPM 2.0 header. Verified Specifications: - Form Factor: ATX (243.84 mm x 304.8 mm) - Chipset: AMD B850 - Socket: AM5 (Ryzen 9000 / 8000 / 7000 series) - Memory: 4x DDR5 UDIMM, max 256 GB; up to 8200+ MT/s (OC, 1DPC 1R) - M.2 Slots: 2x (PCIe 5.0 x4 + PCIe 4.0 x4) - SATA: 4x 6 Gbps - PCIe: x16 (PCIe 4.0, CPU), x1 (PCIe 3.0, Chipset), x4 (PCIe 4.0, Chipset) - LAN: Realtek 8125, 2.5 Gbps - Wireless: Wi-Fi 6E (160 MHz, up to 2.4 Gbps), Bluetooth 5.3 - Audio: Realtek ALC897, 7.1-channel HD - Rear USB: 3x USB 10 Gbps Type-A, 1x USB 10 Gbps Type-C, 4x USB 5 Gbps Type-A - Video Out: HDMI 2.1 (4K 60Hz), DisplayPort 1.4 (4K 60Hz) - Power Design: 12+2+1 digital power phases