You will earn a lot more if you can just mine Ethereum to viabtc and exchange the ETH to XEC on the CoinEX exchange, get a 3080 RTX, this GPU will give you 3.7$ per day and that's the exact amount for 50,000 XEC right now, you will burn less electricity for this.
0.00007 x 50,000 = 3.5$ using 250watt
Except that buying all the parts for the rig are not factored in.
3080 fe for about 1000
mobo and the rest = 200
so 1200 to do it.
If he has a s15 cost = 0
s15 power 900 21.6 kwatts
gpu rig power = 300 not 250 as the rest of the rig uses 50 so 7.2 kwatts
14 kwatt difference at 10 cents $1.40
1200/1.40 = 857 day difference. If he mines for 100 days he is at 5,000,000 coins
But I had the s15 in hand and used it to mine xec vs btc
If he is buying the s15 it costs more than the rig you mention.
So you would be correct.For me I had the gear and just mined it.