I have mining equipment built by myself, for ETH and Zcash GPU mining.
Using
Aluminium DIY Chassis
Intel Celeron G1840
Asrock H81 Pro BTC motherboard
4X and 6x AMD Radeon RX 470/480 4/8GB
8GB Memory
64/128Gb flshas pen drive
1000W power supply (gold)
Ubuntu and Windows 10
My budget is for the construction, but does not include the parts, the price can be lowered if there is an increase of built equipment.