Rx5700 and RX5700XT are one of the best AMD graphics card for mining nowadays and I still have some respect for AMD VEGA cards as well but the problem with RX5700s are high temp, for longer life these cards aren't the best and also if you are from a hot country Nvidia cards are best for you, I prefer RX480 or RX580 Amd cards over these RX5700s, they are way too hot like 80oC to 90c that's too high.