The Asus Chromebox M076U has an SSD storage medium which is faster than the HDD storage medium found on most few processor core computers that are a similar age to it. 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 across all similar spec PCs that came out around the same time as the Chromebox M076U.
An HDD storage medium is the worst storage speed across similar types of PC.