I read all the numbers and I said I have to try to get my leftover btc rig mining ltc.  so after 34-40 hours of trying to make it work.  I am pulling 650khs with a hd7970 rig can add a second card  I HAVE A HD7790 I will pop it in and get the rig to 1k.  Now that it is cold in New Jersey running a pc pulling 300-450 watts helps to warm the house.  If it was not for this thread I never would have got the rig to run ltc. My Thanks  to dZcoop.   Making money for me in all kinds of ways.  next i need to figure the lit coin block chain wallet out as it is a bit different then the btc chain.   I am earning about .3 ltc a day with 650  kh running.