We talked in several
previous articles about the differences between HDD and SSD and the differences
between them. , Of course, the difference in speed associated with the size -
that is, the larger the hard, the faster its speed - did not come by chance, but
because of the structure of the hard, and the way it works, and this is what we
will try to explain in this article from the following lines.
Large SSD units contain
more information channels and NAND memory | Once you have a quick look at the
contents of the internal SSD hard drive, you will find that it consists of NAND
memories placed in groups and connected to a controller that is responsible for
determining where data is stored on these memories. In the case of a
large-capacity SSD, it contains multiple groups of NAND chips, and each group
is connected to the controller and a dedicated bus for it, and thus the
controller reads and writes data at the same time from several groups. In this
way, the more NAND chips are used, the more independent paths for sending and
receiving, of course, this has a significant impact on performance, as each
group sends and receives data without affecting or being affected by others.
When are small SSDs faster?
Due to the nature of SSD
storage, the only time a smaller disk is faster is when it is new or empty. The
hard drive first copies the data and stores it in a temporary memory, then
clears the block, and then merges the data to somewhat reduce the memory blocks
that are filled. Simply, the probability of filling up a large disk is less
than the probability of filling up a small disk, and this is another reason why
a large SSD is faster than a small one.
But.. there are other
things you should know about SSDs. The presence of several NAND memory units
indeed improves and increases the performance of the SSD, but this is the first
part of the quality of the disk’s work, the type of these memories such as MLC,
TLC, and QLC, which play a major role in the performance of the disk in terms
of speed in erasing memory blocks And rewrite it, if you compare two SSDs of
the same but with different memories, the difference in performance and speed
will appear.
The other important part
is the SSD disk controller. The evolution and intelligence of the controller,
especially about what data will be cached, erase data, and how data is swapped,
has a great impact on disk work. And do not forget the cache memory, large disks
contain relatively larger caches, and this enhances their speed, especially
when performing large transfers or other operations that require speed in
dealing with data and multiple commands at the same time
Tips to preserve the
life of the SSD in your device
Why don't we upgrade our small SSD disks to be faster?
I know what you're
thinking right now, I don't need a lot of disk space so why don't companies
make small SSDs with big performance speed? This is possible in theory, but for
manufacturers, another view, and this view is completely related to the economic
aspect and production costs, there is a minimum cost of manufacturing the disk,
no matter how small or large, and it is related to the materials from which it
is made and has nothing to do with the large or smallness of the SSD, for
example, the cost of manufacturing A 500 GB disk is equivalent to the cost of
manufacturing a 1 TB disk, so no one will manufacture a smaller disk as long as
it is comparable in cost to a large disk.