ATX is too big, ITX is too cramped, mATX is just right by chrisPrevost - AMD Ryzen 7 5800X, GeForce GTX 1080, Fractal Design Meshify C Mini MicroATX Mini Tower - PCPartPicker
AMD Ryzen 7 5800X Bottleneck GTX 1080? - CPUAgent
Ultimate Liquid Cooled Gaming PC i7 9700k 5.00GHZ GTX 1080 Ti - 32GB 250GB NVMe | eBay