FreeSurfer System Requirements
Freesurfer is available for the Linux and Mac OS X operating systems. The [wiki:Download download page] lists the details on the supported platforms.
A 1GHz or faster processor is recommended. 512MB of RAM is the minimum, and at least 1GB of RAM is recommended.
Freesurfer requires about 2.3GB of disk space for the full installation, which includes the Freesurfer binaries, support libraries, the MINC toolkit, and sample MRI data.
The volume and surface data files produced by Freesurfer for a typical subject (assuming three structural MRI scans per session) consume about 240MB of disk space.