Understanding what Percona Server is

Hi all

I want to test Percona patches for MYSQL to try percona-patches for 5.1

http://www.mysqlperformanceblog.com/2010/02/09/introducing-p ercona-patches-for-5-1/

But I don’t know how. Do I have to replace my MySQL server 5.1 by Percona Server 5.1.X ?

Thanks!