Hey guys, I think this is an easy question but I just wanted to get assurance before I make the purchase, if I want 64gb of Ram am I ok getting 2 sets of 4x8 sticks or do I have to buy a set that is 8x8? I am trying to buy ddr4 2666 15-15-15- but I am not finding any 8x8 sets for sale currently, so am I ok doing the 2 sets of 4x8? Thanks