The Pro x2 612 supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs that have been around for around the same time as it. Most comparable spec portable PCs that were released more than two years ago support a 133MHz processor memory clock speed. This 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 across all notebook PCs of a similar spec and age to the Pro x2 612.
Across comparable types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.