ssd 500gb Science Lecture Hall Solid State Drive (SSD) Literacy

ssd 500gb Science Lecture Hall Solid State Drive (SSD) Literacy

1tb ssd driveSD OEM ssd 500gb solid-state drive ssd 500gb, abbreviated SSD It’s no longer new. Whether it is a manufacturer of the whole machine online or a user who buys accessories to assemble a computerssd 500gb, basically SSD as the first choice, and the opposite hard disk drive ( HDD for short) is usually treated as a warehouse disk.

in order to facilitate understanding, we use the form of a table to briefly distinguish the similarities and differences between the two hard disks (taking the 2.5-inch product as an example), and then mainly for the SSD to make some instructions.

ssd 500gb

the above figure, it can be seen that in addition to price factors, SSD basically shows a comprehensive crushing trend. This is mainly caused by the different ways in which the data is stored.ssd 500gb

interlude, we get to the point. For most PC hardware, there is never more than one industry-approved classification standard. Only by understanding SSDs from different latitudes can we have a deeper understanding of this part.

according to this latitude can be divided into three categories of common SSDs: SATA interface, M.2 interface, PCIE interface.

the conclusions obtained below are based on the control variables (interface types), and all other conditions are the same by default.

SATA interface of the 2.5-inch SSD and the current market of mechanical hard disk in terms of interface is no different, are a power supply interface A SATA3.0 data interface. This type of SSD is also the early form of SSD.

M.2 interface of the SSD is the most popular type of product used by various computer manufacturers in recent years, when used directly inserted into the motherboard interface and screw fixed. Both the size and ease of installation are better than traditional 2.5-inch SSDs.

one thing to note is that the M.2 interface supports both SATA and PCIE channels, if it occupies the motherboard SATA bus, his performance is not significantly different from the traditional solid-state drive, and the M.2 interface SSD that occupies the motherboard PCIE bus is a better performing product. Students need to be screened when buying.

PCIE interface SSD is currently the top product of desktop SSD, the theoretical transmission speed is 3-6 times higher than the SATA interface SSD, the performance is more excellent, the capacity is larger, so the price is more expensive.

with the official launch of its own QLC solid-state drive products 660P and 760P some time ago, the storage particle type of SSD has once again aroused widespread discussion. I remember that the last time this topic was discussed on a large scale was more than 6 years ago when Samsung launched the world’s first TLC SSD 840.

we will control the variables before talking about this part, and the examples given below agree that each SSD has the same number of cells.

SLC (Single-Level Cell) is the early form of SSDs, each storage unit only stores 1 bit of potential, that is, the unit only has 0 and 1 two states. Although SLC particles are the ancestors of SSDs, they are also the fastest, highest life, strongest stability, smallest capacity and most expensive products under the same conditions. Because of these characteristics, the civil market basically does not see SLC particles, this product is the first choice of enterprise users.

 the advent of MLC (Multi-Level Cell) was revolutionary, and such particles officially announced that the price of SSDs could finally be accepted by civilian players. As the name suggests, each storage unit can store a potential value of 2 bits, that is, the unit can have a total of 4 states of 00, 01, 10, and 11, which greatly improves the data storage under the same conditions. It is very fast, has a high life, has strong stability, average capacity, and the price is relatively high. Because of these characteristics, MLC particles officially correct the name of SSD. Unfortunately, due to relatively high production costs and inaccurate price positioning, MLC products on the market are no longer the first choice for installation.

the emergence of TLC (Trinary-Level Cell) is also a revolution. If Samsung had not forced the price of its TLC products to the price range of MLC many years ago, I believe there would not be so many users who reject TLC particles today. Of course, this is also related to the poor performance caused by the imperfect particle quality control and main control chip in the early days of TLC. Each memory cell of the TLC can store a potential value of 3 bits, so each cell will have 000, 001, 010, 011, 100, 101, 110, 111 a total of 8 states. TLC particle speed is average, life is average, stability is average, the capacity is relatively large, and the price is close to the people. With the application of 3D NAND technology and the continuous improvement of the main control chip, TLC has become the absolute hegemon of the current SSD market.

the relevant features of QLC (Quad-Level Cell) After the above explanation, I believe that smart students have summarized themselves, and each unit stores 4bit information, with a total of 16 states. As a new thing, QLC also needs us to give enough patience and market test, if QLC products can pull the price range of SSD down a long way, I believe it will also have a significant impact on the popularity of SSD.

we mentioned above that SSDs will have different bus occupations, and for this part of the content, it is still necessary to combine the transmission protocol of the hard disk product to assist digestion. The so-called transmission protocol can also be called transmission specification, transmission standard, which means the way of data transmission.

(1) IDE protocol is a very old mechanical hard disk transfer protocol, there is no need to discuss.

(2) Although the AHCI protocol performs better, it is also born for mechanical hard disks and is not discussed in depth.

(3) SATA protocol is our most widely used transmission protocol, faster transmission speed, high execution efficiency, but also support hot swap, the vast majority of hard disks on the market or use SATA protocol, the current SATA 3.X has basically met all the needs of the civilian market.

(4)NVMe protocol is a transmission protocol specially developed for flash memory products, which is the optimal solution of the current SSD product transmission protocol, which can give full play to the product performance of SSD while reducing latency. It is the preferred protocol for M.2 interface SSDs.

ends here, and the literacy of SSDs is over. If students still want to know more about the deeper knowledge, they can continue to pay attention to our later explanations or search for relevant knowledge to make up for the lessons.

for ordinary users, the purchase recommendation is to give priority to the purchase of TLC granules with M.2 interface supporting the NVMe protocol to take the PCIE bus, if there is a higher demand for storage capacity, you can then purchase TLC or QLC products of the SATA interface as storage disks.

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