I want to choose distribution version of server on VDS\Cloud. I choosing between 32-bit and 64-bit.
From one side, server with 64-bit OS faster than same server with 32-bit OS (is it true?). From other side, each application on server with 64-bit OS require 2 times more RAM. And RAM is main property of server, because most of VDS\Cloud providers increase cost, when you increase RAM consumption.
I will use: MySQL, Ruby, Ruby on Rails, nginx