The HP 620 has a faster storage speed than most many processor cores desktop computers that came out around the same time as it. This PC has an HDD storage media, whereas most many processor cores desktop computers that were released more than two years ago have a Flash storage media. A Hard Disk Drive (HDD) is the traditional storage method for computers. A HDD stores the information on magnetic disks. HDD drives are cheap, but they are slower than Flash and SSD bases storage systems.
An HDD storage media is in fact the worst storage speed across all many processor cores desktop computers that have been on the market for a comparable time to the 620.
Across comparable types of PC the best storage speed is SSD.