Worth upgrading?

Hello there mate,

Hmmmm while your system is indeed old,it doesn't mean it's obsolete.I run on i7 7700 and it's still as fast as i remember(most cases).
Ram is mostly a matter of capacity and lemme tell ya,you have plenty.GPU is NVidia and in my opinion,a good, old Nvidia graphic is still able to be compared to brand new ones.

My recommendation is to keep at it,till there are noticable lags and delays (with low graphic settings in games).
When there is such need to replace some specs after....let's say 5-6 years(ok yeah that's a good period approximately),I would recommend completely gutting the PC and replacing most stuff.( Definately consider HSSD when remaking a PC)