RX570 vs 580

ETH mining-

Electricity Cost: 0,20€/kwH

Already ordered/got: Mobo + CPU + RAM + ethOS from GPUShack
+ EVGA Supernova 1200W (psu) + Kyerivs PCI-e risers + case

Question – In doubt between 6x GPU’s:

MSI RX 570 4GB Armor OC: 205€ [6x: 1230€]
MSI RX 570 4GB Gaming X: 222€ [6x: 1332€]
Sapphire Radeon RX 570 Nitro+ 8GB: 270€ [6x: 1620€]
MSI RX 580 4GB Gaming: 247€ [6x: 1482€]
MSI RX 580 8GB Armor OC: 271€ [6x: 1626€]

Expecting/Considering to continue on mining other altcoins after pos @ eth.


Any opinions regarding the best GPU in regard to possible MH/s vs Wattage consumption??

Thank you!