im building a new pc which i typically do about every 4-5 years. Ijust picked out my parts for my new pc and im a little hesitant to buy them because ddr4 will be releasead this year. My current build is about $6000 and i dont want to spend that only to have ddr4 be a necessity for top end gaming in 2 years. I will be playing 1080p surround mode and 4k surround mode, will the bandwidth that ddr3 currently has last me another 4-5 years without affecting my gaming or should i wait for ddr4?