Antminer S9 does not seem to be putting up good numbers : r/NiceHash
How would the new Antminer V9 be superior to the S9? Why would you want to use this instead? - Quora
Bitmain Antminer S19 Pro (110Th) profitability | ASIC Miner Value
7 Antminer S9 running. Still can get around 30$ daily profit after deduct the electricity cost ( 0.059$/kwh) as I'm in Malaysia and electricity kinda cheap here. : r/NiceHash
Bitmain Antminer S9 (14Th) profitability | ASIC Miner Value