The Latitude 14 E5440 supports a faster memory clock speeds supported by processor than most similar spec portable PCs that have been available for around the same time as it. This notebook PC supports a 1,600MHz processor memory clock speed, whereas most medium processor core notebook PCs that were released more than two years ago 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 actually the best supported memory clock speeds supported by processor amongst all notebook PCs that are a similar age to the Latitude 14 E5440.
Amongst similar types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.