CentOS 6.3 x86_64 2 DVD Pack can be used with 64bit PC. CentOS 6.3 is the latest version of the enterprise-class Linux distribution derived from the source code of Red Hat Enterprise Linux 6.3. The CentOS team is pleased to announce the immediate availability of CentOS-6.3 for i386 and x86_64 Architectures. CentOS-6.3 is based on the upstream release EL 6.3 and includes packages from all variants. All upstream repositories have been combined into one, to make it easier for end users to work with. There are some important changes to this release compared with the previous versions of CentOS and we highly recommend reading this announcement along with the Release Notes. There is also a minimal install CD that will get you a very small base install that you can add to.

 
About CentOS
CentOS as a group is a community of open source contributors and users. Typical CentOS users are organisations and individuals that do not need strong commercial support in order to achieve successful operation. CentOS is 100% compatible rebuild of the Red Hat Enterprise Linux, in full compliance with Red Hat's redistribution requirements. CentOS is for people who need an enterprise class operating system stability without the cost of certification and support.