Hi, my friend is doing 1080p editing and his machine is an i7 4790, 16GB ram, GTX 1060. Now the machine is struggling a lot. So what's the best part to upgrade to get a better experience. (CPU+MB or Graphic Card?)
"Best part to upgrade" - maybe "none of the above".
Key is to discover the reason(s) that the machine is struggling.
Use Task Manager and Resource Monitor (use both but just one at a time) to determine what resources are being used, to what extent (%), and what is using any given resource.
Update your post to include full system hardware specs and OS information.
PSU: make, model, wattage, age, condition?
Disk drive(s): make, model, capacity, how full?
What video editing software is he using? What other software is being run?
Also look in Reliability History for error codes, warnings, and even informational entries that may be relevant to to slowed performance.
Run this and post a link to the results page.......PC BenchmarkOS - Win 10 20H2, MB - AsRock H81M, Ram - 8x2 1600.
PSU - Seasonic Seasonic focus gold 650W. 2 years.
Disk - Samsung Evo 860 1TB. Used space 300GB.
Software - Premiere 2021. No other major software running at the same time.
Usage - CPU - 40%, Ram - 70%, CPU - 3%.