64GB 😮 -- that is a lot of memory 😄
We host larger databases on much less RAM (as we're using a cloud provider and high memory installs are crazy expensive)...
There is definitely a speed difference though. Navigating between pages on here takes a split second longer than a Redis database... if you want to see NodeBB fly, use Redis.
@scottalanmiller was replying to somebody talking about a 50 GB data community though.