|The question is faster for what?|
If you want better gaming performance, add a gaming level graphics card (desktop only) and possibly a better power supply if needed to power it.
If you are working with large files like extremely large excel files, photoshop, autocad, or other large files, add more memory (use 8GB or more).
Please elaborate on your uses, where you are slow, and your complete system specs for a more detailed answer.
You have to be a little bit crazy to keep you from going insane.