hello again guys..

My bro just asking me about build a new pc or just upgrade some parts in his PC. I have no idea since so long didnt follow about PC news can u guys help me so i can suggest him a better option :-
This is his Wood

PC Spec :-
Proc : Intel Core i5 CPU 760@2.80Ghz 2.79Ghz
Socket 1156 LGA
Mainboard : Gigabyte H55m-S2
Ram : DDR3 10 GB ( 8GB+2GB)
Storage : 750 GB
PSU : Cooler Master 650w 80+
GPU : GTX 470 JUST BURNED last month

so now using Nvidia GeForce 8400 GS (Temporrary GFX)
Monitor : Samsung SyncMaster B2230
He normally play games like DOTA2, Street fighter V, Diablo III and CS GO. And he also doing some editing with Adobe Lightroom and Video Editing with Adobe Premiere and Sony Vegas.
Should he build a new PC or should he upgrade some parts like new GFX, Add Ram or Add SSD ? if yes pls suggest which model and how much will be the cost is.

and yes if build a new PC how much the cost it will be at least can steady around 5 years later