Video Editing System

Currently all major companies like Sony, Adobe, Grassvally use the CPU to do the final rendering. The video card is used to speed up preview when you are working with 4k video and have effects on.

So in Short, the more RAM and the more Cores, the faster it will render. Now this isn't 100% true across the board since AMD is in its own world. like and example AMD 8Core cpus are slower than an intel i5 with 4 cores. But you get the general idea.