Tested with prerelease Safari 14 and latest stable versions of Chrome, Firefox, and (Windows) Microsoft Edge at the time of testing, on Intel Core i5-based 13-inch MacBook Pro systems with prerelease macOS Big Sur and Windows 10 Home running in Boot Camp iPad Pro 12.9-inch (4th generation) units with prerelease iPadOS 14 and Intel Core i7-based Microsoft Surface Pro 7 systems with Windows 10 Pro and iPhone 11 Pro Max with prerelease iOS 14 and Samsung Galaxy S20 Ultra with Android 10. Testing conducted by Apple in August and October 2020 using JetStream 2, MotionMark 1.1, and Speedometer 2.0 performance benchmarks on browsers that completed the test.
