Lenovo ThinkCentre M920s SFF desktop PC i5-9400 16GB 2TB HDD

Compact business desktop

The ThinkCentre M920s SFF is a small-form-factor PC built for office environments. It ships with Windows 11 Pro, a 6-core Intel Core i5-9400 processor and 16GB of DDR4 memory. Integrated Intel UHD 630 graphics drive two DisplayPort outputs. A 2TB 3.5-inch hard disk and a DVD±R/RW optical drive provide local storage and media access.

Thermals and power in daily use

The 210W power supply feeds the CPU, memory, integrated graphics and spinning drive during typical workloads. The slim chassis uses internal airflow paths sized for the 12 x 14 x 4 inch frame. Acoustic output stays low when handling email, browser tabs and document editing. Power draw remains well within the supply rating for these tasks.

Behaviour under sustained load

When all six cores run at higher frequencies for extended periods the CPU can reach its 4.1 GHz turbo ceiling. The fixed 210W budget limits how long peak speeds hold before thermal management reduces clocks. Integrated graphics share system memory, so heavy compute and video tasks compete for the 16GB DDR4 pool. The mechanical drive becomes the bottleneck for large sequential reads and writes.