The Acer TravelMate TMP645-V supports a faster memory clock speeds supported by processor than most portable PCs that have been available for around the same time as it. This Acer portable PC supports a 1,600MHz processor memory clock speed, whereas most notebook PCs of a similar age and spec 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 in fact the best supported memory clock speeds supported by processor amongst all portable PCs of a comparable spec and age to the TravelMate TMP645-V.
Amongst similar types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.