The Asus S400CA supports a 1,600MHz processor memory clock speed which is faster than most ultrabooks that have been around for a similar time to it. Most ultrabooks that were released more than two years ago support a 133MHz processor memory clock speed. In addition, this Asus notebook PC 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 comparable spec notebook PCs that are a similar age to the S400CA.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst comparable types of notebook PC.