This is Sonic THE HEDGEHOG BOX, one of my mini computers made with 3d printing, now it can be yours https://www.thingiverse.com/thing:5559537 Motherboard: mini itx 17x17cm. Processor: the one you like the most (amd, intel, a potato) with integrated graphics. Hard disk: m2 1tb 7000mbs (not much is necessary but there it is), an ssd also fits. Ram: 16 gb ddr4 3200 (more of the same, put the one you see) Heatsink: it has one with little lights, so it has more power for sure. Don't be a jerk and put a good Noctua or one that is not the one that comes as a base and a thermal paste that doesn't dry out in 2 days. Power supply: it has a current modulator and an external laptop charger, external source = lower internal temperature.