The TravelMate TMP643-M supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs of a comparable age and type to it. Most notebook PCs of a similar type and age to it 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 actually the best supported memory clock speeds supported by processor amongst all portable PCs of this age and type.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst comparable types of notebook PC.