Question

which OS architecture I use, 64 bits or 32 bits for single core, 512mb?

which OS architecture I use, 64 bits or 32 bits for single core, 512mb? ISPConfig3 to 2 websites wordpress. In my machines for personal use I always installed 64-bit system for several reasons, security, better aproveitamente of cpu resources, better adminstration Ram memory, etc … even in old machine, but I’m following a tutorial servers that area nothing understand where the author scares who try to use a 64-bit machine because 512mb have server problems because of insufficient memory, I always thought that myth in the event of use for personal machine, because I never had problems, and always found this invention of technical own theories, but as I do not know anything servers, I come here to ask, the first time created a droplet that was a week atraz, I created with debian 8.1 64-bit, my test ‘ulimit -n’ of number of connections per nucle cpu was 65,536, now with 32-bit system was in 1024! you really think I use it? creating a 2GB swap solves everything in a 64bit OS in my personal practice for household usage, I know they are not for use in servers that have not experiment!

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I suggest using 64-bit. There is some software nowadays that only supports 64-bit. And you’ve already noticed some benefits in various defaults.

There will always be people debating both sides of any issue regardless of the value of the debate. People trying to scare you aware form 64-bit for memory usage may not be able to see the big picture that other people can see. Your time and mental energy is much better focused on your business than on technical details like this.