Just to vouch for SP. I purchased the sigt mod at the very beginning. With 21 - 1080 Ti, I made $7000 mining 152,000 sigt.
His miner was 30% faster at 70% TDP, so his mod contributed $2100 in earnings.
your farm is definitely bigger than mine His miner was 30% faster at 70% TDP, so his mod contributed $2100 in earnings.
I purchased the mod 1 day later and so far I barely recovered price of the mod (I didn't sell coins, just calculated current price). if sp_ will charge 0.1 BTC for new coins' mod, it will deter small miners like me.I have been purchased spreadcoin miner and after one week I purchased Signatum miner and then I should pay 0.1 BTC for next miner (+devfee) if I want to use next SP_ moded miner!
I think putting some keys/authentication systems in miner is better.
For example each miner build can have a unique ID and sp can log wallet username(or something else) to a database and if a ID use more than 2-4 wallet in a day (because miner maybe test a new pool) or use more than 2 wallet in long terms, SP can ban miner (for next shop) or even stop current miner