The Transformer Book T300FA has a better storage medium than most laptops of this spec and age. This notebook PC has an HDD storage medium, whereas most laptops of this spec and age 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 actually the worst storage medium amongst all portable PCs of this spec and age.
The best storage medium across comparable types of laptop is SSD.