and thought it would be convenient to separate the work machine from the mining machine . . and I wondered whether this might be a good way to get started? Note AUS dollars - any quick calculations on ROI? - it depends on the cost of electricity I guess . . AUS 23.15 cents/kWh max:
I started by buying EVGA GTX 1060 SC cards (around US$230) each one, and kept buying more and more. I started with a 750W PSU (Power Supply Unit) that will allow you to connect 4. You will get around US$1.50/day per card with a 10-months return.
After that you will become adicted, and then buy a second PSU, a MB (Motherboard) with 13 PCI slots… and a new GTX 1060 every other month.
Note that Energy bill might be your return killer in many countries!