I am an idiot but... How can people get such big numbers with 5V/0.9A per port? At that numbers it should consumpt cca. 4.5W which is sufficient for 600-620MHz, using formula from first page Mhz*5.66=hashrate and 1.3W/MH efficiency. And they are OEM tuned for running @600, obviously having in mind most of people will have 3.0 ports/hubs where 0.9A is standard max. I went that road too but I don't get it...