minisforum UM890 Pro Ryzen 9 8945HS barebone mini PC

Compact Ryzen 9 barebone

The minisforum UM890 Pro is a barebone mini PC built around an AMD Ryzen 9 8945HS processor with eight cores and sixteen threads. It targets builders who want a small-footprint system for productivity, light gaming or AI-assisted workloads and who prefer to supply their own memory and storage. Buyers needing a complete out-of-the-box unit or a discrete graphics card slot should look elsewhere.

Installation and common pitfalls

Two DDR5 5600 SO-DIMM slots accept up to 96 GB in dual-channel mode and are accessible after removing the bottom cover. The board also provides two PCIe 4.0 x4 M.2 2280 slots for SSDs. Note that using the OCuLink port for an external GPU consumes one M.2 slot and the connection is not hot-swappable, so plan the storage layout before assembling.

Sustained-load behaviour

The 4 nm Zen 4 chip runs at a 4.0 GHz base clock and can boost to 5.2 GHz, while the integrated Radeon 780M graphics deliver up to 14 percent higher single-thread performance than the previous architecture. Dual 2.5 Gbps LAN ports and Wi-Fi 6E maintain network throughput during long sessions, and the USB4 interfaces can power a 15 W portable display without a separate adapter.