Thanks everyone for the tips. I am not gonna wait for new skylake processors as it looks it is not gonna bring anything new. I will wait just a bit to collect enough money to buy this rig and afterwards gonna buy the ram. About the RAM module, I am gonna buy 1x 8GB module so I can later buy 1 or 3 more modules depending on performance. And I forgot to mention that I will be overlocking both CPU and GPU so I am expecting 25 - 30% performance boost.