I am wondering which is better to buy? Which is faster? Currently in my system I have 2 8 gig stick of patriot viper 2133 mhz memory on an msi z87 gd65 gaming. One stick is on the slot closest to the cpu and the second is on the 3rd slot. I was originally planning on getting 32 gigs but that is complete over kill and I would just be wasting my money, so should I return the ram and get 4x4 gig sticks? Would that yield better performance?