Hardware for editing with Adobe software

Hi, I need some information.
I want to build a PC for video editing and use Premiere Pro, After Effects and Audition software.
My questions are these:
Does memory frequency matter for those who use these softwares? Is there a performance gain using memories with higher frequencies?
The higher the CPU clock, the better the performance in After Effects? And on Premiere Pro the CPU clock doesn't matter?
For Premiere Pro the more cores and threads on the CPU is the better? Is this the main thing?
For After Effects and Premiere Pro does the video graphic card(GPU) have to have as much memory(VRAM) as possible and Cuda Cores? What else is important?
Will a PC with two CPU(Processor) have double performance?
Do two video graphics cards(GPU) on the PC also significantly improve the performance of software or Adobe softwares do not support this technology?