Heres what I switched up: Firstly, the monitor. That 20 inch doesn't have an hdmi port (I think) and the 21.5 inch does. Next, the graphics card. The 750 Ti is a tad bit more power than the one you had, and is an all around great card. I also did change the storage. A 120 gig ssd just isn't going to be enough for a gaming machine, it's going to get eaten up so fast. I know this is closer to 700 bucks, but it's worth it man.