The Acer TravelMate TMP645 has a better storage medium than most medium processor core laptops that have been available for more than two years. This notebook PC has an SSD storage medium, whereas most notebook PCs that were released more than two years ago have an HDD storage medium. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
An SSD storage medium is actually the best storage medium amongst all medium processor core laptops that were launched more than two years ago.
An HDD storage medium is the worst storage medium across similar types of notebook PC.
Portable PCs with a better storage medium that might also be worth considering include the Lenovo T420s (SSD).