Thank you! :) Its pretty ghetto compared to some of the "nicer" mining racks, but the fact that it cost me nothing but my time and a bit of saw dust makes it all worth while.
The ROI isn't the best, but I'm also using it as a heater for the bedroom, keeps it nice and warm!
0 cost is what makes it cool.
I think mining rigs give really good ROI when comparing it to other kind of investments, like real estate which usually takes around 15 to 20 years to break even.
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