You only need USB to power it. And these cheap things have a very good display.

This rig heats my home - silent - until the winter ends in about 1 or 2 months.
The GPUs will be placed in a server case than and mine somewhere else.
In a server case i can put up to 8 GPUs, but i think i stick to seven gpus.
The rig itself will stay for new watercooled gpus until i have enough for the next rig.
This is the reason for the big block.