The Asus X550CA supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs that are a similar age to it. Most similar spec notebook PCs that have been available for around the same time as it support a 133MHz processor memory clock speed. This portable PC also 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 portable PCs of this age and type.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst comparable types of portable PC.