The Macbook Pro Retina supports a 1,600MHz processor memory clock speed which is faster than most laptops of a comparable age and type to it. Most similar spec laptops that are a comparable age to it support a 133MHz processor memory clock speed. This portable PC also supports 1 and 333MHz processor memory clock speeds.
This notebook PC's memory clock speeds supported by processor (1,600MHz) is in fact the best supported memory clock speeds supported by processor across all similar spec laptops that came out around the same time as the Macbook Pro Retina.
The worst supported memory clock speeds supported by processor amongst similar types of notebook PC is 133MHz.