RHEL 6.1 is a server OS, the version is dated `May 2011`.
Should do OK with old "server hardware".
The latest commercial version is RHEL 6.4
The latest free version : CentOS 6.4 or Scientific SL 6.4 .
http://www.centos.org/ //
https://www.scientificlinux.org/news/sl6.4
Version 6.4 has a kernel for later hardware.
( Not necessarily usable on a new laptop.)
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