The HP Z440 has an SSD storage medium which is faster than most medium processor core personal computers that have been around for more than two years. Most personal computers that have been on the market for around the same time as 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.
This personal computer's storage speed (SSD) is in fact the best storage speed across all medium processor core personal computers that have been available for more than two years.
An HDD storage medium is the worst storage speed across similar types of personal computer.
It may also be worth also looking at one of the other SSD personal computers currently available including the DELL Precision T1700 SFF[plb_2676603_price] which has better reviews.