RAM Assistance

I need some guidance and/or hopefully some links to informative videos around RAM config. If theres one thing ive learnt recently, its that google isnt what it once was as a search engine.

Im running 16gb ddr4 across two sticks at 4000mhz and im weighing up whether i should do 32gb across 2 sticks, or installing 2 more of the exact same sticks ive currently got installed instead. Now the (very brief) research i have done indicates that it can lead to instability when you run 4 sticks, however if theyre all the exact same make and model with the same speed, would there really be a noticeable problem? I also recall something about CPU compatibility, but i have since struggled to find anything helpful about this.

Im starting to move into light video editing for fun, so advice on whether its even necessary or not would be an added bonus too. Any help is appreciated!

Current setup:

• i5-12400f
• EVGA RTX 2070 super
• Ripjaws 2x8gb ddr4 4000mhz
• GIGABYTE Z690 Gaming X