D3’s, S7’s and a few others. I have 30 running. Plus 4 computers with powerful GPU’s. The computers pool mine.
I can’t generate 2.5 TH/s myself, so I sell what I have to NiceHash. Sometime, I may just pool mine with them and build up those funds also. Build up my wallet, then buy huge hashing power when rates are low. It takes about a week to give me a good chunk of runtime at 2.5 TH/s. I may have to wait two weeks and get that number to 5 TH/s.
I know what your saying about being better off not doing what I am doing, but I respectfully disagree. There is always the right combination that will make this work. Once I figure out LiteCoin, it’s off to the big times, BitCoin.
I studied probability and statistics in college, so I do understand my chances. By the end of this month, I will have a LiteCoin block. You can take that to the crypto-bank.