I’ve got 32GB ram. I found with a smaller number of clients logged in than I’d expect, my system was bogged down. I checked system resources and saw why, my ram was near max, 31 out of 32gb in use.
Each EVE client was using around 1.3GB of ram. Add in to that a couple of web browsers and I reached my limit far sooner than I’d expect. I switched to 32 bit EVE and now my EVE clients only use 0.8gb of ram and everything is fine.
It looks like the 64 bit EVE client uses 1.7 times more ram than the 32 bit client.
Some multi account users are going to run into problems if they ever remove the 32 bit option. Unless you get a ridiculous amount of ram to offset it.