Interesting thing....I have 3 miners with 6 rx 470 4gb cards, each on different operating system (win7, win8.1 and win10). Now strange thing is that miner with win10 is not able to upload dag file on sixth card so i had to expand virtual memory and other two work fine. Could someone try to explane me why is that? Before installing win7 and win8.1 on other two miners win10 was working fine with 6 cards