The HP Z440 has an HDD storage media which is faster than the Flash storage media found on most many processor cores PCs that have been on the market for around the same time as it. 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.
This desktop computer's storage speed (HDD) is actually the worst storage speed amongst all PCs of this spec and age.
An SSD storage media is the best storage speed across similar types of desktop computer.