Hi, I am fairly new to bitcoin and im thinking of starting to mine..Im planning to invest in antminers..Can anyone tell me which is better? Investing in a brand new S7, or just invest in a couple of used S5's..i have a friend who has a few S5's that he is willing to sell me for cheaps since he is upgrading to S7's.. power is no problem since i would be able to dedicate a 1 or 2 solar panel generators that i already have installed in my home..I could just redirect that to AC and the miners if ever..
My main question is, can 2 or 3 S5's generate same hashing output as a S7 can? or which is more? and do i really need an airconditioned room? or a room with open space that could disperse the heat will do?
help would be greatly appreciated..