At the request of many Phoronix readers following the release of updated Arch Linux media, here are some new Arch Linux benchmarks. However, this is not just Arch vs. Ubuntu, but rather a larger Linux distribution performance comparison. In this article are benchmark results from Ubuntu 12.04 LTS, CentOS 6.2, Fedora 17, Slackware 14.0 Beta, and Arch Linux."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips