The ZBOX-CI320NANO-U-W2 has an SSD storage medium which is faster than the HDD storage medium found on most medium processor core personal computers that came out more than two years ago. 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 PC's storage speed (SSD) is actually the best storage speed amongst all desktop computers of this spec and age.
An HDD storage medium is the worst storage speed across comparable types of PC.