Asrock DeskMini X300

Compact (6.1 inches square) and low-cost ; Easy to build out ; Can host plenty of storage (four drives!) and RAM ; Boots quickly ; Pleasant aesthetics, including optional internal lighting

Optional fan is a little loud ; The best compatible AMD CPUs are OEM-only ; Must supply and install own M.2 Wi-Fi module

Based on an unusual form factor, Asrock’s DeskMini X300 is a cost-effective bare-bones pick if you need a capable small-footprint desktop with a little extra graphics pop.