https://arstechnica.com/gadgets/2019/10/amd-scores-a-big-marketing-win-with-ryzen-powered-microsoft-surface/

Today, Microsoft and AMD announced a new line of 15-inch ultraslim Surface laptops based on AMD Ryzen CPUs. These devices are still Zen 1 mobile parts, not the much-anticipated 7nm Zen 2—but their inclusion in such a high-profile and slim form-factor laptop goes a long way toward answering lingering questions about AMD's ability to compete strongly in the higher end of the mobile CPU space.

Microsoft's press release claims that the Surface 3 with a Ryzen 5 3580U CPU will have a battery life of up to 11.5 hours based on "typical Surface usage." Microsoft goes on to state that the Ryzen-powered Surface 3 is the fastest laptop in its class. This stat, unfortunately, gets less impressive when you read the fine print and discover that the "class" only includes other 15W TDP Ryzen processors.