The Samsung 540U3C supports a 1,600MHz processor memory clock speed which is faster than most ultrabooks that are a comparable age to it. Most ultrabooks that came out around the same time as it support a 133MHz processor memory clock speed. In addition, this portable PC supports 1 and 333MHz processor memory clock speeds.
A 1,600MHz processor memory clock speed is actually the best supported memory clock speeds supported by processor across all portable PCs of a similar spec and age to the 540U3C.
The worst supported memory clock speeds supported by processor across similar types of laptop is 133MHz.