The Zotac ZBOX-CI320NANO-U-W2 has a faster storage speed than most personal computers that have been around for a similar time to it. This Zotac desktop computer has an SSD storage medium, whereas most medium processor core personal computers that were released more than two years ago have an HDD storage medium. 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.
An SSD storage medium is in fact the best storage speed across all desktop computers of a comparable spec and age to the ZBOX-CI320NANO-U-W2.
An HDD storage medium is the worst storage speed amongst similar types of computer.