The CI321 nano PLUS 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 desktop computer's storage speed (SSD) is actually the best storage speed amongst all similar spec PCs that are a comparable age to the CI321 nano PLUS.
Amongst comparable types of desktop computer the worst storage speed is HDD.