Orbita MB-3891 SE B850 Mini-ITX Wi-Fi 7 Motherboard
Motherboards · Orbita · SKU MB3891-SE · Released 2025 · Updated 2026-10-25
Key facts
| Benchmark index | 3,550 (Motherboards scale) |
|---|---|
| Category rank | #44,586 |
| Street price | $279 |
| Power | 35 W |
| Performance per dollar | 12.72 |
| Released | 2025 |
Specifications
| Brand | Orbita |
|---|---|
| Model | Orbita MB-3891 SE |
| Socket | AM5 |
| Chipset | B850 |
| Form factor | Mini-ITX |
| Memory | 2× DDR5 DIMM, up to 128 GB |
| Max memory speed | DDR5-8000+ (OC) |
| Primary x16 slot | PCIe 4.0 x16 |
| M.2 slots | 2 total, 1× PCIe 5.0 x4 |
| Rear USB-C | 1× USB 3.2 Gen 2x2 20Gbps (Type-C) |
| Ethernet | 2.5GbE |
| Wireless | Wi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4 |
| Overclocking | CPU + memory |
| VRM | 17+2+1 phases, 90 A stages |
| BIOS | Dual UEFI, BIOS flashback button |
Related guides
PCIe Lanes ExplainedM.2 SSD Sizes and KeysAMD AM5 SocketAMD AM5 Chipsets ComparedDDR5 Memory ExplainedPCIe 5.0 Explained
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Cite this page: Hardware Spec Index, “Orbita MB-3891 SE B850 Mini-ITX Wi-Fi 7 Motherboard”, https://vextor7.com/item/71668599 (accessed 2026-10-25).