The Macbook Air Early 2014 supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs of a comparable age and spec to it. Most MacBooks that came out around the same time as it support a 133MHz processor memory clock speed. In addition, this Apple notebook PC supports 1 and 333MHz processor memory clock speeds.
This portable PC's memory clock speeds supported by processor (1,600MHz) is in fact the best supported memory clock speeds supported by processor across all notebook PCs of this type and age.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor across comparable types of portable PC.