My new rig Asus b250 mining expert and 8 Rx 560 so 4 GB ram Enough?
Yes, it is enough, even with Window, a clean Window (not with a lot of resident utility to start at the startup).
But the best of all is to use Ubuntu : no more memory issues, no more issues with the number og GPU, hashrate increase, no automatic reboots, no reboot during hours... and so on....