user40551: I want to start mining but I am not sure about my calculations. Is it worth to mine with 4 nvidia gtx titan X without paying for electricity? I calculated it with a bitcoin calculator and the money are incredibly low. I did something wrong for sure. Titan X has 1980 hash rate. 

user26873: Nope, you didn't do anything wrong. You're about 4 years late, the days of gpu mining are over.

40551: <p>I want to start mining but I am not sure about my calculations. Is it worth to mine with 4 nvidia gtx titan X without paying for electricity? I calculated it with a bitcoin calculator and the money are incredibly low. I did something wrong for sure. Titan X has 1980 hash rate. </p>
 26873: <p>Nope, you didn't do anything wrong. You're about 4 years late, the days of gpu mining are over.</p>
