The major differences between HDD and solid drive are as under. Speed: When it comes to great execution, choosing a capacity drive for your PC speed is the major definitive calculation, and there's a noteworthy speed distinction ssd external vs internal. Price: HDDs are clear winners because they continue to offer the best ratio in terms of dollars per gigabyte when it comes to pricing. Durability: SSDs are way more durable in terms of durability because there are no moving objects on the inside; therefore, if you drop something on the ground, it is very likely that an SSD survives. With an HDD, you are probably going to have some physical damage. Availability: In terms of availability, every computer store will give you a great variety of options to choose from, whether we talk about ssd external vs internal.