If your electricity is cheap. You will probably make $3 or $4 a month. In another couple months. Even if electricity is only $0.10 per KWh. You'll probably lose money. At current difficulty. You are better off speculating than mining.
You can only really mine with an asic these days. GPU based mining is not as profitable as it once was due to the increasing difficulty of mining. You would have to join a mining club to be profitable, even though you'll only make a few bucks a month if that when you factor in electricity costs from running your computer 24/7
If your electricity is cheap. You will probably make $3 or $4 a month. In another couple months. Even if electricity is only $0.10 per KWh. You'll probably lose money. At current difficulty. You are better off speculating than mining.
Even with free power, the best coins ROI in just over 24 months. Meaning if you left the card mining 24/7 with free power, in 2 years the card will be paid off. That is if the coin you are mining doesn't lose value.