I too switched from chromium to firefox a few years ago when my system ran out of its 8GB RAM regularly. Chromium was using about 7.5GB, it was quite noticable

I too switched from chromium to firefox a few years ago when my system ran out of its 8GB RAM regularly. Chromium was using about 7.5GB, it was quite noticable. I then reopened the exact same tabs in firefox, made sure they are all loaded to make a fair comparison and it came out to less than 1.5GB RAM usage. I've been a happy firefox user since then and never looked back.