Hi, im getting parts for my first build and I was wondering about the difference in memory. My friend told me to get 16 gigs but ive read that i only really need 8. I am going to be playing lots of games and recording and editing the video. I am also doing schoolwork. Which would be the best for these with best performance. Also what difference does it make between how many sticks of it you have such as 4 sticks of 4gig vs. 2 sticks of 8gig. All help and suggestions are greatly appreciated. Thanks.