Twalknz72: Yep this is EXACTLY what he does. He's always listening to something, YouTube, gaming and generally has a browser page or 3 open. He's not looking to upgrade at this time but just squeeze a wee bit more out of what he has hence the addition of a bit of ram. Maybe a full upgrade in a couple of years, when running his games is a real problem, but for now just a wee tweak will do.
Best to monitor memory usage with something like hwinfo, you want to find out if it is at capacity and paging to disk before committing to a purchase. I will agree with others that buying same spec would be best unless you have someone you know who can tune memory (most retail shops do not) or the lower spec memory is more expensive than higher spec.
This is assuming that insufficient memory is the culprit, the common symptom is brief freezing/stutter during gaming. If he is not suffering this, or is just wanting a general performance increase then the only options are to upgrade or learn overclocking.
@K8Toledo I agree with the part about a 400MHz increase not amounting to much, but the rest is not relevant or even accurate. There are many posts/videos online on results of memory overclocking, not just for bandwidth but overall latency.
I would also suggest removing the photo as it includes something you shouldn’t be posting publicly.
Edit: a video as example of OP’s 10th gen and zen 2, also reiterating for OP that you have to jump to 3600-4000 CL14ish and not be GPU bound to see anything noticeable. Again, please focus on other parts of the PC unless you are actually running out of memory.