Dear all, would like to post my findings about power consumptions - I use RX580 with 4GB - the normal polaris and one 570 nitro. I'm measuring the whole power consumption of a rig. The board with cpu is consuming about 60W. A whole rig with 2 RX580 and the 570 consumes about 500W - this means a power consumtion of 150W per RX. With the tuned RX580 I get 28Mh/s and with the tunded RX570 nitro+ about 27Mh/s. I expected more from the nitro+ (has Hynix), but I checked several stripes - no way to get more out. Think experts like matttev can get the last percents out, but I don't think it's possible with only 80W per RX580. It all depends on how to measure the power consumption - it's easy to get wrong on that.