How much RAM do I need for modded Minecraft with 100+ mods?

16GB total system RAM is the sweet spot. Bumping from 8GB to 16GB reduces stuttering because 8GB only leaves 4–5GB for Minecraft, causing Java’s garbage collector to run constantly. With 16GB, allocate 6–8GB to Minecraft to keep the GC calm and frames smooth. Don’t go overboard—12GB allocated to Minecraft makes garbage collection longer and can worsen stutters.