The Lenovo ThinkCentre M900 Tiny is a pre-built business desktop computer. The motherboard is using the Q170 chipset and supports a 6th gen Intel Core processor, and 32GB of UDIMM DDR4-2133 memory. Because of its size, this model cannot be properly upgraded for gaming. Lenovo ThinkCentre M900 Tiny is very compact and comes with an external power supply. This device is easy to upgrade with additional RAM and storage but has little to no expandability.