Ryzen B550 4U
This rackmount system features AMD's Ryzen processor platform with a standard ATX size motherboard, but in a server-style chassis. The Ryzen line is AMD's mainstream CPU family, offering up to 16 cores and fantastic performance per dollar.
Rackmount cases offer very little in the way of front panel connectivity - just a pair of USB ports - while the motherboard's rear I/O panel provides the bulk of the connectivity (more USB, audio, and networking). But with lots of space in this style of chassis, a wide range of options are supported internally - including dual video cards, up to 128GB of memory, and multiple solid-state and hard drive configurations. There are also powerful fans to ensure everything stays well cooled, but at the cost of substantial noise levels.