Hi
I have 3 choise

-MSI RX 470 ARMOR MINING 4GB GDDR5     370$
-Sapphire RX 470 MINING Edition 4GB GDDR5 Samsung Memory IO   370$
-OSTAR RX 570 4GB GDDR5 MINING  395$

I wanna to buy 4 gpu  so let me know
thanks