I just started myself on Cryptomining, crying that I missed the Bitcoin stampede last year! The DIFF has exploded since March as the ASIC's have come online.
Thumbs up to trying for LTC, but I've also had "fun" going for CHN Coin, American Coin (with a li'l old GT520 that was dusty and lonely!) and putting some Feathercoins
in my Cap... just in case any of them explode like BTC did!! The newer coins will have a lower DIFF level so you'll feel richer, quicker!
I had a box of "CAD classroom rig" spares: GTX650's and super "RAM'd" GT630's (4Gig!!) and currently have them paired up two to a machine
(I leave a GT520 on as a display driver on my main rig to run the display without lagging or taking away from the main miner)
They don't run too hot, and being in the basement of a large school, plenty of chilly air to blow across them for free!! (free juice is nice too)!
I use cudaminer on them and it's working fine for past 4 months. You do have to use a stratum proxy, but at least the program boosts Nvidia Mining approx
10 - 25% !! (sadly Nvidia's Suck
Donkey at BTC mining!!!
)
GitHub has the Stratum proxy and Cudaminer for download. When using the Proxy, make sure to chop off everything, including the double // before the pool name.
The Proxy doesn't need that info, and I've seen that tidbit mess people up! And make SURE you plug in the correct Port Number!!!
Good Luck!