The Samsung NP540U3C supports a faster memory clock speeds supported by processor than most portable PCs of this type and age. This portable PC supports a 1,600MHz processor memory clock speed, whereas most similar spec notebook PCs that came out around the same time as it support a 133MHz processor memory clock speed. This notebook 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 amongst all laptops that are a similar age to the NP540U3C.
Amongst comparable types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.