Just wondering my current gear can handle games in upcoming 2-3year with min medium setting or not?

Do I need to upgrade partially or good to go for another years....

Mostly used for web browsing, movie and games only.

My specs:

I5 4460
R9 280
16gb 1600 ram
550 psu

If upgrade needed, any recommendations with affordable mid range budget? I don't really look for high end experience on gaming and tight budget recently.