Question Do I need an extra GPU if I don't play game but do video editing and other heavy works?

Mar 10, 2019
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1) Do I need an extra GPU if I don't play game but do video editing and other heavy works?

I wanted to use this processor : Intel Coffee Lake Core i7 8700 3.20-4.60GHz, 6 Core, 12MB Cache LGA1151 8th Gen. Processor

And this Motherboard : Gigabyte Z370XP SLI DDR4 8th Gen Intel LGA1151 Socket Mainboard

And 16 GB DDR4 RAM

2) I have another question. How much power will this PC consume? How much Powerful Power Supply do I need?
 
Mar 10, 2019
19
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-Depends on what kind of workload plus achieving target time
Search on Google about Adobe requirements system on video editing or 3d modeling
-Use PSU calculator software
Thanks, but can GPU really boost up processing time? I thought it only helps to brighten the display, I mean shows the highest possible pixels in the display.