Is it easy to update graphic's cards and CPU's and things like that?
And I'd probably buy more memory anyway.
Well, with a prebuilt computer it can be a bitch.
Also, if you're comfortable with replacting a gpu and a cpu why not just build your computer from scratch? Those are 2 most possible dangerous things to install.
Just buy some anti static gloves and you'll be fine. Its pretty easy to build a computer, and I'm willing to help every step of the way.
If this can runs Sims 3 or minecraft, im in
The rig I linked all the parts for you is a hell of a lot better than this one.