A Intel 3770 can get about 200H/s. It is lower than the R7 370, but it uses much less power. It consumes about 40W to do that.
But that means 0.05 XMR/day or less. Does that pay for the electricity?
And for the GPU mining.. did somebody do a profitability calculation? Because I doubt that everybody mines with free electricity.
But if you mine with 10 300 H/s ( 6xGPU) things are different:
Daily:
2.35088633 XMR
USD: 31.05 USD
Electricity: 3.12 USD
Pool Fees (1.5%): 0.47 USD
Profit: 27.47 USD
So:
Electricity: 0.13 USD/kWh (for 1000W) + Pool fees 1.5% will the profit is around 10 026 USD after a year.
A R9 390 can get you only about 800H/s. The power consumption is about 150W. I think it is not so profitable.
