SSD vs HDD: which is best for your needs?
You currently have a solid-state drive (SSD) as the primary boot drive if you have purchased an ultra-portable laptop at any point in the last few years. Bulkier gaming laptops have also switched to SSD boot drives, though hard disc drives (HDDs) are still preferred by only a subset of budget computers. Meanwhile, the boot drives in prebuilt desktop PCs are now also mostly SSDs, except in the cheapest versions. In certain situations, a desktop comes with both, with the SSD as the boot drive and the HDD as a storage supplement for greater space.
If, however, you have to choose only one, how do you choose? To help you decide, let 's dig into the distinctions between SSDs and HDDs and walk you through the benefits and drawbacks of each one.
Explained on HDD and SSD
The basic non-volatile storage on a computer is the standard spinning hard drive. That is, when you turn off the device, information on it does not "go anywhere," unlike data stored in RAM. A hard drive is basically a magnetic-coated metal platter that holds your records, be it weather forecasts from the last century, a high-definition copy of the original Star Wars series, or your compilation of digital music. The data is accessed by a read / write head on an arm as the platters spin.
An SSD serves the same basic purpose as a hard drive, but information is stored on interconnected flash memory chips instead, which preserve the information even though there is no power flowing through them. These flash chips (often referred to as "NAND") are of a different type and usually faster and more durable than the type used in USB thumb drives. Consequently, SSDs are more costly than same-capacity USB thumb drives.
However, SSDs are often much smaller than HDDs, just like thumb drives, and thus give manufacturers more versatility in designing a PC. Although they can take the place of conventional 2.5-inch or 3.5-inch hard drive bays, they can also be built or even placed directly on the motherboard in a PCI Express expansion slot, a feature that is now prevalent in high-end and all-in-one laptops.
Benefits and Drawbacks of HDDs and SSDs
In budget and older systems, hard drives are still around, but in mainstream systems and high-end laptops such as the Apple MacBook Pro, which does not offer a hard drive except as a configurable option, SSDs are now the norm. On the other hand, desktops and cheaper laptops will, at least for the next few years, continue to deliver HDDs.
That said, the same work is performed by both SSDs and hard drives: they boot your device and store your applications and private files. But each kind of storage has its own distinctive characteristics. How are they different, and why do you want to get one over the other one?
SSD vs. HDD Pricing
In dollar-per-gigabyte terms, SSDs are more costly than hard drives. A 1 TB internal 2.5-inch hard drive costs between $40 and $60, but the very cheapest SSDs with the same size and form factor start at approximately $100 as of this writing. Which translates into 4 to 6 cents for the hard drive per gigabyte versus 10 cents for the SSD per gigabyte. If you look at high-capacity 3.5-inch hard drives, the distinctions are more dramatic.
Maximum and Typical Capacities for SSD vs. HDD
Market SSDs are seldom found to be more than 2 TB in ability, and these are costly. As primary drives in systems, you're more likely to find 500 GB to 1 TB modules. While 500 GB for premium laptops these days is considered a "foundation" hard drive size, pricing issues may force that down to 128 GB or 256 GB for lower-priced SSD-based systems. With 1 TB to 8 TB drives available in high-end systems , users with large media libraries or who work in content production would need even more. The more storage space, the more things you can hold on your PC, essentially.
SSD vs. HDD Speed
This is where it shines on SSDs. In much less than a minute, sometimes in just seconds, an SSD-equipped PC can boot. It takes time for a hard drive to accelerate to operating specs, and during regular use it will continue to be slower than an SSD. A PC or Mac boots faster with an SSD, launches and runs apps faster, and transfers files more easily. The extra speed may be the difference between finishing on time and being late, whether you're using your computer for fun, school, or company.
To this, a secondary issue: fragmentation. Hard drives operate well for larger files that are laid down in contiguous blocks because of their rotary recording surfaces. That way, in one continuous motion, the drive head can start and end its reading. "Bits of large files end up scattered across the disc platter when hard drives begin to fill up , causing the drive to suffer from what is called" fragmentation. "While read / write algorithms have improved to the point that the effect is minimised, To the point of affecting output, hard drives can also become fractured. However, SSDs do not since the absence of a physical read head implies that data can be stored without penalty anywhere. This adds to the inherently speedier existence of SSDs.
SSD vs. HDD Reliability and Durability
In the event that you drop your laptop bag or your device gets shook while it is running, an SSD has no moving parts, so it is more likely to keep your data secure. When the machine is off, most hard drives park their read / write heads, but when they are running, the heads travel at a distance of a few nanometers over the drive platter. Furthermore, even the parking brakes have limits. If your machinery is rough, an SSD is recommended.