The ZBOX PI320 has an SSD storage medium which is faster than the HDD storage medium found on most personal computers of this age and spec. Solid State Drives (SSD) store information in transistors on a circuit board rather than on optical or magnetic media. This has the advantage of being much faster than a traditional HDD drive.
This personal computer's storage speed (SSD) is actually the best storage speed across all similar spec PCs that have been around for more than a year.
The worst storage speed across comparable types of personal computer is HDD.