The ProBook 450 G1 supports a 1,600MHz processor memory clock speed which is faster than most portable PCs that have been around for a similar time to it. Most medium processor core laptops that have been available for around the same time as it support a 133MHz processor memory clock speed. In addition, this HP notebook PC supports 1 and 333MHz processor memory clock speeds.
This portable PC's memory clock speeds supported by processor (1,600MHz) is in fact the best supported memory clock speeds supported by processor amongst all medium processor core laptops that are a comparable age to the ProBook 450 G1.
Amongst similar types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.