The ZBook 15 supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs that are a similar age to it. Most comparable spec 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.
A 1,600MHz processor memory clock speed is actually the best supported memory clock speeds supported by processor across all comparable spec laptops that have been on the market for more than two years.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst comparable types of notebook PC.