Linus Tech Tips just released this video discussing the amount of RAM that creative professionals need in order to run powerful programs, such as Adobe Creative cloud.
It turns out he noticed a trend that there is improvement in performance as you use more RAM, but only to a certain level...then it doesn't really matter. Especially with video rendering, he noticed that more RAM does not equal faster rendering.
Any creative professionals out there want to share their wisdom? I personally have 12GB RAM and I feel it is more than enough.