I'd suggest using coinwarz to find out:
http://www.coinwarz.com/cryptocurrency1) find out which hardware you have/ which hardware you can buy (mark the price, including the postage, customs charge, controllers, cables, cooling, shelfs,...)
2) find/run benchmarks for this hardware: you need the hashrate and power draw (including the power used by the controller)
3) fill in the numbers (don't forget the electricity usage and price)
4) see if you can make a profit (hint: don't be suprised if you cannot make any money, especially when your electricity price is not so great)
If you want to do some BTC mining, this is even better:
http://www.coinwarz.com/calculators/bitcoin-mining-calculatorDon't forget: the halving is around the corner and the S9 just hit the market (block rewards WILL halve, the diff has a good probability of rising, the price MIGHT fluctuate but nobody knows the direction)
