@busywait I should have searched for RAM rather than Memory :)
I run a Pi4 4GB behind my TV set. Sometimes I start the Pi Desktop and more RAM might help in that situation. (Browser with too many tabs, ... ?) But if you're sticking to just game emulation, sounds like you can save a little money \o/
Spending the saved cash on a good heatsink case (or case heatsink) would be sensible to stop the Pi getting too hot, and allowing more aggressive overclocking.