The DELL Precision T5810 has an HDD storage medium which is faster than the Flash storage medium found on most PCs of this age and type. 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 medium is in fact the worst storage speed across all desktop computers of a comparable type and age to the Precision T5810.
An SSD storage medium is the best storage speed across similar types of personal computer.