Testing conducted by Apple in October 2020 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.Performance will vary based on usage, system configuration, network connection and other factors. Tested with pre-release Safari 14.0.1 and Chrome v.121. 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.