HI! I just bought a desktop 3weeks ago. and some how im not satisfied with the quality output of the screen. Im using a Samsung HDTV 27inch 1080p as my monitor. I want to upgrade my video card and i know i have to change my PSU. dont know that much about video cards and PSU.Im not a Gamer. but i just want good quality high resolution output. Need advice. Thank u in advance. heres the spec of my pc.