The DELL XPS 13 supports a 1,600MHz processor memory clock speed which is faster than most laptops of a comparable age and spec to it. Most comparable spec laptops that are a similar age to it support a 133MHz processor memory clock speed. In addition, this portable 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 similar spec laptops that came out more than two years ago.
Across comparable types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.