A standard SATA hard drive (HDD) has been the predominant storage device for desktops and laptops, for a while. Huge storage allows manufacturers to provide HDDs at a low cost in new computers. The SSD is more expensive, but has huge benefits and can help avoid frustrating wait times and can prolong the life of your device for a number of years. They can be used in conjunction with a standard HHD in desktop and some laptops (that cater for 2 hard drives) This setup allows the operating system and applications to be stored on the smaller SSD while allowing the large storage area to still be accessible thus keeping the speed and the storage.
The Pros and Cons
Access time : An SSD has access speeds of 35 to 100 micro-seconds, which is nearly 100 times faster. This faster access speed means programs can run more quickly. A typical HDD takes about 5,000 to 10,000 micro-seconds to access data.
Price : SSDs cost a lot more than a HDD, which is why most computers with an SSD only have a few hundred gigabytes of storage. Desktop computers with an SSD may also have one or more HDDs for additional storage. HDD is considerably cheaper than SSD.
Reliability : An SSD drive has no moving parts, it uses flash memory to store data, which provides better performance and reliability over an HDD. Think of it as a large USB memory stick inside your PC. The HDD has moving parts and magnetic platters, meaning the more use they get, the faster they wear down and the more likely they are to fail.
Capacity : By comparison, HDDs are much cheaper than a like sized SSD. Thus you can get a much larger HDD for cheaper than a SSD.
Power : The SSD uses less power than a standard HDD, which means a lower energy bill over time and for laptops an increase of battery life. With all the parts and requirements to spin the platters, the HDD uses more power than an SSD.
Noise : With no moving parts, SSD generates little to no noise. With the spinning platters and moving read/write heads a HDD can sometimes be a noisy component.
Heat : Because there are no moving parts and due to the nature of flash memory, the SSD generates less heat, helping to increase its lifespan and reliability. A HDD generates more heat as it has constant moving parts when in use. Heat can slowly damage electronics over time, so the higher the heat, the greater the potential of damage being done.
Magnetism : SSD is not affected by magnetism. Because a hard drive relies off magnetism to write information to the platter, information could be erased from an HDD using strong magnets.