OC and Undervolt RX Cards

I have the following cards: Vega 56 Vega 64 5700xt 5600xt 6600 580 3060 TI LHR I need them OC and undervolted for maximum benefits for Ergo. I'd like to maximize efficiency of Hashrate/Watt. The rig is on Hiveos Projected estimates for each card as far as hashrate Vega 56 170mh Vega 64 150-190mh 5600Xt 80mh 5700Xt 100mh 6600Xt 60-100mh 570 60mh Most important is to maximize the hash/watt for efficiency. 3060 TI LHR 165mh