Hello,i want to buy a new pair of Ram but i need to know some things first.I have a Gigabyte ga-p67a-d3-b3 with an intel i7 2600k.I'm not planning to overclock yet but if i would,what will it be difference to the right choice? I am looking for 2x8.What should i check about the memory frequency and cas latency.Maybe 16gb is more than i need? I mostly use pc for gaming but sometimes i do heavy multitasking and use heavy programms/games .I just want to look a bit in the future.I would be glad to see your preferences.Thanks!!!