The Aspire R3-431T has an HDD storage medium which is better than most similar spec notebook PCs that came out around the same time as it. Most laptops that have been around for around the same time as it have an SSD storage medium. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.
An HDD storage medium is in fact the worst storage medium amongst all similar spec laptops that were launched around the same time as the Aspire R3-431T.
Amongst similar types of laptop the best storage medium is SSD.
Portable PCs with a better storage medium that might also be worth considering include the HP 13-r100dx (£691.82) (Hybrid-HDD).