The Travelmate TMP455-M supports a 1,600MHz processor memory clock speed which is faster than most laptops of this age and type. Most medium processor core laptops that have been on the market for around the same time as it 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 in fact the best supported memory clock speeds supported by processor amongst all portable PCs of this age and spec.
Amongst similar types of laptop the worst supported memory clock speeds supported by processor is 133MHz.