Power Supply and Graphics Card Upgrade

heckler

Honorable
Aug 1, 2012
2
0
10,510
i have a dell 580 inspiron with an I3 processor,i want to game with this pc but need more power and a better graphics card,im new to computers and would like some help
 

More CPU power or more electrical power or both?

What games in particular will you be playing and at what display resolution and graphics quality?