Lenovo ThinkStation Mini PC i9-14900 T400 8GB 512GB Win 11 Pro

Compact workstation for professional workflows

The Lenovo ThinkStation Mini PC pairs a 14th Gen Intel i9-14900 processor with 24 cores and 32 threads with an NVIDIA T400 4GB GDDR6 graphics card. It ships with 8GB DDR5 memory and a 512GB PCIe NVMe SSD running Windows 11 Pro. This configuration targets engineers, designers and analysts who need multi-threaded CPU performance and certified drivers in a 7 x 7.25 x 1.5 in chassis.

300W power supply manages thermals and acoustics

The integrated 300W PSU delivers enough headroom for the 14900 CPU at its 5.8 GHz boost and the discrete T400 GPU under sustained load. In typical office or CAD workloads the fan curve remains quiet, and the small footprint allows placement on a desk or behind a monitor without obstructing airflow. Power draw stays within the supply rating during normal professional use.

Mini chassis dictates connectivity and expansion

Four video outputs — HDMI, one full-size DisplayPort and three mini DisplayPort connectors — drive multiple 4K displays from a single device. A USB 3.2 Type-C port, RJ-45 Ethernet, WiFi 6 and Bluetooth 5.3 handle peripherals and networking. The 3.1 lb unit includes a USB keyboard and mouse, but the compact board leaves no room for internal drive bays or add-in cards, so storage upgrades must use external solutions. Buyers needing internal PCIe expansion or additional 2.5 in bays should consider a tower workstation instead.