Some individuals also speculate the “completely new” V9 is nothing at all greater than an undervolted Antminer S7. There are 2 explanations for that, just one staying that some people have allegedly managed to underclock their Antminer S7s and make them perform as a V9 (~4TH/s with an influence attract https://bitmainantminers19pro91244.blogozz.com/28879722/not-known-facts-about-bitmain-antminer-e9-pro