What cards and mining what? Show us your calculation. My best guess you are making $1 net per day. Good for you.
5 7950's, 5 280x's all heavily overclocked, 1 750ti 1 780m and 1 gt 540 and one 200ghs sha miner that has payed for itself many times since i purchased it.
iam not going to tell what coin iam mineing as i dont want everyone whoreing on it. and power is most def not an issue, considering my last bill was only 468 AUD.
on average with fluctuations i mine between 0.019-0.032 btc a day.
and my sha miner did
an average of 0.34 btc over a 4 day period when i had it on last.
just have to know what to mine and when to trade it and what to trade it for lol. btc is just the middle coin as there is always something better to invest in.