When I check minergate top 5 miner list for monero, it says the top miner has 1,976,941 H/s speed whereas I can only get ~270 H/s on CPU.
I also read somewhere that GPU mining for cryptonight algorithm makes it x2 faster or so but not like x100 faster so I don't think it is because of the GPUs that miner may have. (Also it can be some bad information but I'm not sure)
So my question is how to achieve that kind of speed? With what kind of hardware and which miner? I think the answers from the last year are not relevant anymore.