There is a big difference between HDD and SSD laptops. SSD means solid-state drive, and the drive is flash-based. It's faster than traditional HDD laptops, which have mechanical hard disks. SDD laptops offer more efficient storage and performance for maximum productivity. SDD laptops store and retrieve data up to 5 times faster than any HDD laptop. HDD models have moving parts that need to be powered by the battery. So, they are not energy efficient.