Hej CryptoJunks, we tested alot of different cards the best ones are:  
GTX 1070 https://www.amazon.de/gp/product/B01HRYEQBU/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1638&creative=6742&creativeASIN=B01HRYEQBU&linkCode=as2&tag=passivesgeld-21  and RX480 https://www.amazon.de/gp/product/B01IQS6NI0/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1638&creative=6742&creativeASIN=B01IQS6NI0&linkCode=as2&tag=passivesgeld-21

GTX 1070 30,8mhs 140 watt
RX480      30,2mhs 110 watt  

On setting questions please let me know  

Invest in future and not in quick money and you'll see it is woth