A vertical computer cabinet. A common design for servers and high-performance workstations, tower cases have more room for storage and card expansion than horizontal desktop cases and all-in-ones.
I would know, as I once downsized an already small gaming PC into a case that was compact enough ... in my pocket but can also transform into a workstation or even a gaming rig.
PC cases, cooling, and power specialist SilverStone has launched its new Alta D1 workstation chassis, and it is a big one.