The ZBook 17 supports a faster memory clock speeds supported by processor than most notebook PCs that have been around for a similar time to it. This portable PC supports a 1,600MHz processor memory clock speed, whereas most laptops of this spec and age support a 133MHz processor memory clock speed. In addition, this HP portable PC 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 portable PCs of a similar type and age to the ZBook 17.
Across similar types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.