The ProBook 450 has an SSD storage medium which is better than most medium processor core notebook PCs that are a comparable age to it. Most medium processor core notebook PCs that have been available for around the same time as it 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.
This laptop's storage medium (SSD) is in fact the best storage medium amongst all laptops of a comparable type and age to the ProBook 450.
An HDD storage medium is the worst storage medium across comparable types of laptop.
We compared this notebook PC to all the other notebook PCs that have an SSD storage media and we think the Latitude 12 E5250[pl_2854767_price], and the Latitude 12 E5250[pl_2854767_price] both from DELL or the Toshiba Z40[plb_2984397_price] which is cheaper is also worth considering.
If you want a notebook PC with a better storage medium then you might also want to look at the LG 13Z940[plb_2362386_price] (SSD).