Is CPU mining worthwhile for Litecoin? FPGA? GPU? I'm interested in solo mining on Litecoin.  Where can I learn about (or what math is required) two tell if this is feasible/profitable?
Currently I have 30+ CPUs running as solo miners for 40 hours and so far nothing has turned up.  Are there any optimizations I should do to the miner?
Litecoin CPU ScryptMiner 

Download 

http://www.mediafire.com/?l8i99fbyn41n97a

I have an i7 getting 40 k/Hash which is not too bad 

Considering that with cgminer config correctly you will get an k/Hash result similar to the M/Hash result for your GPU mining activities 

Check this out for an complete guide of what your outputs should be using both reaper &amp; cgminer 

https://bitcointalk.org/index.php?topic=117221.0

I think that given i5 cpu and lots as in 30 that u have @ your disposal then LTC should be a goer 

mrb stated that with correctly configered s/w LTC &amp; BTC mining should be on a par of ~ 0.0041/0.0040 BTC/LTC per hour for (600 m-Hash BTC/600 k-hash LTC) GPU card setup

https://bitcointalk.org/index.php?topic=131809.msg1414530#msg1414530