Tested on production 1.4GHz quad-core Intel Core i5–based 13-inch MacBook Pro systems with 8GB RAM, 256GB SSD and pre-release macOS Big Sur. Testing conducted by Apple in October 2020 by measuring page load performance of snapshot versions of 10 popular websites under simulated network conditions.Performance will vary based on system configuration, network connection and other factors. Tested with pre-release Safari 14.0.1, Chrome v.121 and v.80, and Firefox v81.0 and v81.0.1, with WPA2 Wi-Fi network connection. Scores represent browsers that completed the test. Tested on pre-production MacBook Air and Mac mini systems with Apple M1 chip and 8-core GPU, as well as production 1.2GHz quad-core Intel Core i7-based 13-inch MacBook Air systems and 3.6GHz quad-core Intel Core i3-based Mac mini systems, all configured with 16GB RAM, 2TB SSD and pre-release macOS Big Sur. Testing conducted by Apple in September and October 2020 using JetStream 2, MotionMark 1.1 and Speedometer 2.0 performance benchmarks.Performance will vary based on usage, system configuration, network connection and other factors. Devices tested with a WPA2 Wi-Fi network connection. Tested with pre-release 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 pre-release macOS Big Sur and Windows 10 Home running in Boot Camp iPad Pro 12.9-inch (4th generation) units with pre-release iPadOS 14 and Intel Core i7-based Microsoft Surface Pro 7 systems with Windows 10 Pro and iPhone 11 Pro Max with pre-release 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.

Mac safari emulator