The Aspire S7-392 supports a 1,600MHz processor memory clock speed which is faster than most laptops that came out more than two years ago. Most ultrabooks that were launched 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 laptop's memory clock speeds supported by processor (1,600MHz) is in fact the best supported memory clock speeds supported by processor across all ultrabooks that have been around for a similar time to the Aspire S7-392.
The worst supported memory clock speeds supported by processor across similar types of laptop is 133MHz.