Hi! I'm planning to build 2 budget gaming pc. I want them to run in dual channel, supposedly 2x4gb (total of 8gb). In our store they only sell 1 stick 4gb and 1 stick of 8gb same brand, not in pairs. Is it ok to buy two 4gb for each pc even though it doesn't come in pairs, will it run dual channel? Or should I buy 1 8gb for each pc? They said that dual channel is better for gaming. Sorry for my english.