The ProBook 450 supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs that were released around the same time as it. Most comparable spec laptops that were released more than two years ago support a 133MHz processor memory clock speed. This notebook PC also 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 across all laptops of a comparable type and age to the ProBook 450.
The worst supported memory clock speeds supported by processor across comparable types of notebook PC is 133MHz.