Unknown. Help us by suggesting a value. (Apple MacBook Air (2015) 13")
Unknown. Help us by suggesting a value. (Apple MacBook Air (2017) 13.3" Intel Core i5 1.8GHz / 8GB / 128GB)
VRAM (video RAM) is the dedicated memory of a graphics card. More VRAM generally allows you to run games at higher settings, especially for things like texture resolution.
VRAM: is this important to you?