The HP Probook 450 supports a faster memory clock speeds supported by processor than most medium processor core notebook PCs that have been on the market for a similar time to it. This portable PC supports a 1,600MHz processor memory clock speed, whereas most similar spec notebook PCs that were launched around the same time as it support a 133MHz processor memory clock speed. In addition, this 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 across all portable PCs of a similar age and spec to the Probook 450.
The worst supported memory clock speeds supported by processor amongst comparable types of portable PC is 133MHz.