about 1500 hash I burn 240 watts to earn about 1.15 a day at 10 cent power that is about 57 to 60 cents in power cost net 58 cents
my rig cost more then 1500 usd do the math close to 3000 days to pay itself off.
but it is paid off when times were good.
So for me it pays to make the 58 cents profit
1 1050ti about 300 hash 1 i7 cpu about 150 hash
450 total hash
and you will spend close to 80 -110 watts or 20 to 30 cents in power earning 37 cents so 7 to 17 cents profit but profit none the less. Since you own the gear.