The Linux 3.13 kernel that is just entering mainline development stages already has Radeon DPM and HDMI audio by default. However, now there`s another Radeon DRM-Next pull and it provides support for the brand new AMD R9 290 Hawaii GPUs!"
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