Is SSD Faster Than HDD?
Before we dive into the advantages of SSD over HDD, let us look at NAND vs NOR Flash Memory. NOR flash contains individual memory cells that are connected in parallel so devices can randomly access data. This makes NOR flash ideal for low-density read-only applications.
NAND flash contains an array of memory transistors that are connected in a series. This kind of configuration ensures smaller cell sizes, smaller chip sizes, and lower cost-per-bit rates to consumers. NAND flash is designed to program blocks of data all at once making NAND flash ideal for high-density data-storage applications.
The major difference with SSD's and HDD's is that SSD's are newer and faster data storage devices. Every piece of data on an SSD can be accessed instantaneously. A solid state drive reads up to 10 times faster and writes up to 20 times faster than a hard disk drive.
SSD's previously made use of the SATA interface. This allowed people to easily replace their HDDs with SSDs, which was a necessary step in the transition to solid state drives. These days, solid state drives can work as they were always meant to, thanks to NVMe - a new type of SSD interface. Whereas older SATA drives allow the transfer of information only along one channel, NVMe makes use of multiple channels that can read and write at the same time.
Less Energy Consumption
A typical SSD consumes less than half as much power as a typical HDD. This means higher battery life in a laptop, and it means lower power bills when your computer is plugged in. Neither of them use the kind of power your CPU does, and in the home, this won't be a deciding factor. In a datacentre, that may be enough reason to favour SSDs. Of course, the performance benefits are nice too.
Permanent Deletion of Data
This feature is highly useful for people and situations where data security is highly cardinal. When data is either overwritten or deleted on a HDD, there is a chance of recovery. Since the new data does not fall in line with the old data, there exists a chance for some old data to remain. On a SSD, data is deleted permanently leaving no minute traces of the old data.
Heat is a major cause of failures in hard drives, and enough heat is generated by the continual motion of an HDD's moving parts to cause it to break down over time. Since an SSD doesn't have such parts, it can maintain a lower temperature with much higher performance. An SSD is also better able to handle drops, shakes, shocks and everyday wear and tear, making it less apt to experience data loss.
Devices that have larger HDD are performing faster but it is heavier. SSD is a good choice because it works faster considering it is lightweight. If you are looking for some portable, high-performing laptop, you should consider those with SSD.