This table (in the linked article) shows that each CPU has 16 lanes: http://www.anandtech.com/show/11170/the-amd-zen-and-ryzen-7-review-a-deep-dive-on-1800x-17

This table (in the linked article) shows that each CPU has 16 lanes: http://www.anandtech.com/show/11170/the-amd-zen-and-ryzen-7-review-a-deep-dive-on-1800x-1700x-and-1700/3 http://www.anandtech.com/show/11170/the-amd-zen-and-ryzen-7-...