The MacBook Air Mid 2012 supports a 1,600MHz processor memory clock speed which is faster than most comparable spec notebook PCs that were released around the same time as it. Most laptops of this age and spec support a 133MHz processor memory clock speed. This Apple portable PC also supports 1 and 333MHz processor memory clock speeds.
A 1,600MHz processor memory clock speed is in fact the best supported memory clock speeds supported by processor amongst all MacBooks that have been on the market for around the same time as the MacBook Air Mid 2012.
The worst supported memory clock speeds supported by processor amongst similar types of portable PC is 133MHz.