The Chromebox CXI has a faster storage speed than most personal computers of a similar age and type to it. This desktop computer has an SSD storage medium, whereas most PCs that are a comparable age to it 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 PCs that have been available for a similar time to the Chromebox CXI.
Across comparable types of desktop computer the worst storage speed is HDD.
There are a number of other SSD PCs currently available which you might also want to look at including cheaper PCs such as the Asus VM42[plb_2958922_price].