How to choose an SSD, how to choose an SSD?

120G SATA interface SSD,Performance、Particles、*** is Samsung850Ppro,Followed by Puket M6Pro,5 years ago I bought Intel 320 120G,Micron M4 64G is still used on old computers,I have tried M4 64G and Pukett M5P 256G Win7 system boot test boot test startup time is 9 seconds (computer manager test),So if you don't care about running scores,There's no need to buy expensive ones at all, If the motherboard supports buying a PCI-E or interface SSD that supports PCI-E X, the speed is fast enough, of course, it can only be seen when there is big data reading and writing, and it is usually used the same as the mainstream SATA interface SSD.

At present, there are three main types of flash memory particles for solid-state drives: SLC, MLC, and TLC. The main difference between these three types of particles is the number of bits stored:

The SLC can only store 1 bit per memory cell ("bit").

MLC can store 2 bits per memory cell.

TLC can store 3 bits per storage cell.

In general, SLCs are 100,000, MLCs are 5000, and TLCs are 1000.

Note: 1) Don't confuse the number of bits of storage with 2D storage and 3D storage. 2D and 3D refer to the organization and arrangement of storage cells, and the number of storage bits refers to the number of storage bits in each unit.

2) The number of times the entire SSD capacity can be erased once. For example, a 120G SSD erase requires 120GB of data to be written at a time. In addition, the number of rewritable times is usually averaged by a large number of tests, which affects many factors and is only used as a reference value.

Of course, the more bits a storage cell can store, the larger the capacity of the cell and the lower the cost. But the problem is that the more data is stored, the more difficult it is to identify; At the same time, stability, durability, and performance will also be reduced. Therefore, compared with these three types of particles, SLC is the highest-end, followed by MLC, and TLC is the second.

1. Don't buy an SSD with a small capacity.

If you have a budget, try to choose a high-capacity SSD. Different from the read-and-write of mechanical hard disks, SSDs need to erase the original data blocks when writing data.

But when the space left on your SSD gets smaller and smaller, you have to erase the data every time you write, just like the blackboard in a classroom, and you have to wipe it clean every time you write a book.

2. Don't be superstitious about running scores.

Most SSD manufacturers will take out a part of the TLC space to simulate the working mode of SLC, which is called SLC cache, which generally ranges from 1G to 30G. Even half disks, full disk simulation SLC have, most of the running software read and write data volume is carried out in this SLC cache, but when you run a larger amount of data, the original form is exposed, this is the real level of solid-state.

3. Don't be superstitious about MLC, the main control is really good.

Solid state drive is based on a full disk erase number of times ( p e to tell fortunes, even if it is a 128G TLC solid state, there is at least 500 times of write life, 80% of the solid state life is more because the master is hung up, so it is more important to choose an excellent master than the particle.

Fourth, stay away from black films and unknown manufacturers.

Black films, disassembly scraps, unknown SSD manufacturers, for the security of your data, don't touch it. High quality complete OJBK original pellets are surely your best bet. Most of the original particles appear in brands that have the ability to produce pellets independently, such as Intel, Samsung, SanDisk, Micron Toshiba.

Fifth, it doesn't have to be NVME

The running score of NVME solid-state is really hanging SATA solid-state, but in terms of daily actual use experience, the gap is not so big.

The first point is to look at the hard disk interface, the second point is to look at the capacity, the third point is to look at the speed, and the fourth point is to look at the particles and the main control.

Tools Raw Materials:

Dell Drawer G15

Win10 SSD.

1. First of all, look at the hard disk interface.

The common interface of the SSD is SATA interface and interface, SATA interface is available to all computers, and the interface is not available for old computers, and its SSD is small in size and much stronger in performance. Older PCs can choose SATA SSDs, and newer PCs can choose SSDs with SATA interfaces.

2. Look at the capacity.

For the same type of SSD, the larger the capacity, the faster the speed, and the longer the lifespan, so try to choose a larger capacity.

3. Look at the speed.

Look at 4k random read and write, the faster the random read and write, the smoother the computer.

4. Look at the particles and the main control.

There are three main types of granules, if you have money to choose MLC, the main control is recommended to choose a big brand.