The Lenovo ThinkPad E440 supports a faster memory clock speeds supported by processor than most portable PCs that have been on the market for a comparable time to it. This laptop supports a 1,600MHz processor memory clock speed, whereas most similar spec portable PCs that are a comparable age to 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 in fact the best supported memory clock speeds supported by processor across all medium processor core notebook PCs that have been available for a similar time to the ThinkPad E440.
Across comparable types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.