As we recently migrated most of our servers from CentOS to FreeBSD, here is a difference between minimum system requirements of Ubuntu Server CLI Installation and FreeBSD 9:
|OS||FreeBSD 9||Ubuntu Server (CLI) Installation|
|Processor||a 486 or better processor||300 MHz x86 processor|
|System memory (RAM)||64 MB||128 MB|
|Disk space||1.1 GB||1 GB|
The major difference though between FreeBSD and Linux distros comes from the concept of FreeBSD “base system” which is clearly described by Matt Fuller.