The ProBook 440 supports a faster memory clock speeds supported by processor than most comparable spec portable PCs that have been available for more than two years. This notebook PC supports a 1,600MHz processor memory clock speed, whereas most similar spec notebook PCs that were released more than two years ago support a 133MHz processor memory clock speed. This portable 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 across all medium processor core laptops that were released around the same time as the ProBook 440.
Across comparable types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.