This is the first Ethereum miner I built, since then I have built upwards of ten to fifteen miners for other people. And I have learnt a lot in the process and not just in the tech field but in the business world as well because these things are like little businesses. Below is my first miner that consists of 8x 6600 XT GPUs, t made about $300 a month in its prime and payed itself off after about 6 months.
Below are some photos of the build process, construction, and parts used (as well as some links).
* Motherboard *
* Jumper *
* GPU *
* PSU *