The HP 15 supports a faster memory clock speeds supported by processor than most notebook PCs of a similar age and spec to it. This HP portable PC supports a 1,600MHz processor memory clock speed, whereas most medium processor core notebook PCs that were released more than two years ago support a 133MHz processor memory clock speed. In addition, this portable PC 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 comparable spec laptops that have been around for around the same time as the 15.
Amongst comparable types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.