The miners have been designed for maximize roi and profitability
https://asicminingmarket.com/product/innosilicon-a10-pro-7gb-ethereum-miner-750-mh-s-ethminer-price/
The innosilicon A10 pro Eth miner has 750mh/s and takes 1350W power. The Innosilicon A10 Pro+ 7GB Eth Miner is a powerful Ethash profitability miner with a few times better hash rate & efficiency than any competition in the market