what is the difference between the old macbook air and new one?
The 2020 MacBook Air is very slightly heavier at 2.8lbs (1.29kg) instead of the 2019 version's 2.75lbs (1.25g). ... However, the new MacBook Air comes with a choice of processors. Previously, the MacBook Air 2019 shipped solely with a 1.6Ghz dual-core Intel Core i5.