I have searched about the pcie speeds of this model because i want to upgrade it with an 980 pro and cannot find the correct specs anywhere.
Please help.
Secondly, since the laptop already has a single 16gb ram dimm i was also thought it would be a nice idea to upgrade with either
Kingston fury impact 2x8 3200mhz
Or
Kingston fury impact 2x16 3200mhz. 
Clearly for the dual channel benefits. 
Besides gaming, i do a lot of graphic design and video and sound editing and sometimes i have many Programms open. 
What would you advise?
Thank you very much for your attention. 
[Edited the thread to add issue detail]