The ProBook 450 supports a 1,600MHz processor memory clock speed which is faster than most laptops of a comparable type and age to it. Most portable PCs that have been on the market for a comparable time to it support a 133MHz processor memory clock speed. This notebook PC also supports 1 and 333MHz processor memory clock speeds.
This notebook 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 notebook PCs that have been on the market for around the same time as the ProBook 450.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst comparable types of notebook PC.