If you have a budget monitor and a bit of spare change and time, then you can put together something that has super low power consumption, is completely customizable and the best thing yet - can mount via VESA mounting to the back of most monitors. This is the ASRock Deskmini 310, with a H310 STX board. Today I pair it with an i5-9400 and test out the performance, temps and also gaming at 1080p on the HD graphics.