The Precision T5810 has an SSD storage medium which is faster than most medium processor core personal computers that have been available for the last year. Most computers that have been on the market for a similar time 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.
This personal computer's storage speed (SSD) is in fact the best storage speed amongst all similar spec computers that were released around the same time as the Precision T5810.
Amongst comparable types of personal computer the worst storage speed is HDD.