The Lenovo S440 supports a 1,600MHz processor memory clock speed which is faster than most portable PCs of a similar age and type to it. Most ultrabooks that came out around the same time as it support a 133MHz processor memory clock speed. In addition, this notebook PC supports 1 and 333MHz processor memory clock speeds.
This notebook PC's memory clock speeds supported by processor (1,600MHz) is actually the best supported memory clock speeds supported by processor across all ultrabooks that came out more than two years ago.
Across similar types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.