Will a new graphics card make my pc run faster in general?

danitewing

Honorable
Sep 1, 2013
63
0
10,630
My computer has been running pretty slow lately and I want it to run faster but I also want to play better games so, so far I'm buying a new psu and a 7850 or a gtx650ti. Also will more ram make my pc run faster? By slow I mean it takes a long time to start up, a long time to open up applications and games.