Some sites http://www.pcgamer.com/amd-confirms-there-will-be-no-ryzen-drivers-for-windows-7/ are saying Ryzen won't be 7 friendly and others http://www.guru3d.com/news-story/amd-ryzen-cpus-to-support-windows-7-with-drivers.html and saying it will be fully compatible. http://www.pcmag.com/news/351565/amd-ryzen-processors-will-support-windows-7 and https://www.technobuffalo.com/2017/02/09/amds-new-ryzen-chips-wont-support-windows-7/ are another couple of examples. Where's the official word straight from AMD? All this he said, she said isn't helpful.