The XS 3500BB V4 has a faster storage speed than most medium processor core computers that have been available for a similar time to it. This desktop computer has an SSD storage medium, whereas most computers of a similar type and 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 actually the best storage speed amongst all computers that have been around for around the same time as the XS 3500BB V4.
Amongst similar types of desktop computer the worst storage speed is HDD.
If you want a personal computer with a faster storage speed then you might want to consider the Zotac ZBOX PI320 (Flash and higher rated), or the Asus CHROMEBIT (£99.97) (Flash and higher rated).