The ThinkPad T440p supports a faster memory clock speeds supported by processor than most notebook PCs of this spec and age. This notebook PC supports a 1,600MHz processor memory clock speed, whereas most similar spec laptops that came out around the same time as it support a 133MHz processor memory clock speed. This Lenovo notebook 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 amongst all notebook PCs of this type and age.
The worst supported memory clock speeds supported by processor across similar types of portable PC is 133MHz.