CentOS 6.2 x86_64 DVD will have additional package than CD which is useful to your PC. It can be used with only 64bit PCs. CentOS 6.2 is the latest version of the community distribution built by compiling the source code for Red Hat Enterprise Linux 6.2. CentOS 6.2 is based on the upstream release EL 6.2 and includes packages from all variants. All upstream repositories have been combined into one, to make it easier for end users to work with. All updates released since upstream 6.2 release are also released to the CentOS 6.2 mirrors.