RAM has certain things about it that make it better, Speed is one like a 1600mhz stick compared to a 3200mhz stick more than likely the 3200mhz stick is better it really depends on the CAS Latency lower CAS latency the better. when buying PC parts I recommend using Pcpartpicker and finding the best price per gb stick and one with decently low cas latency. but most brands are not just bettter, I usually don't like to buy anything plain. I want something that looks nice.