How to choose solid state hard disk and mechanical hard disk in computer

This article will explain in detail how to choose solid state drive and mechanical hard disk in computers , Xiaobian thinks it's very practical , So share it for your reference , I hope you can gain something after reading this article .

1、 Mechanical drive (HDD) That is, traditional ordinary hard disk , Mainly by ： Disc 、 head 、 Disc shaft and control motor 、 Head controller 、 Data converter 、 Interface 、 Cache and other parts . All the disks in the mechanical hard disk are mounted on a rotating shaft , Each disc is parallel , There is a magnetic head on the storage surface of each disk , The distance between the head and the disc is smaller than the diameter of the hair , All the heads are connected to a head controller , The head controller is responsible for the movement of each head .

2、 Solid state disk (Solid State Drives) It is a hard disk made of solid-state electronic storage chip array . from 1970 year ,StorageTek The company developed the first solid state hard disk drive ; To 2007 year , Toshiba launched its first 120GB Solid state drives, laptops ; To this day , Solid state disk has been developed at a high speed . There are two storage media of solid state disk , One is to adopt FLASH Chip as storage medium , The other is to use DRAM As a storage medium . Now the mainstream adopts FLASH Flash memory chip as storage medium .

Reading and writing speed is relatively high ：

HDD The hard disk reading speed limit cannot be exceeded 200M Per second , Writing speed is also difficult to break through 100M Per second ;SSD Hard disk has great advantages in transmission speed , Up to 500M/ second , Where the reading speed reaches 400-600M Per second , The write speed can also be as high as 200M Per second . about 1G It only takes a few seconds to finish the file , This is for the pursuit of speed , For users who need to read or process large files , Solid state drives are better .

Data security comparison ：

Conventional HDD The hard disk reads and writes data by reading the disk through the magnetic head , Especially in the process of high-speed rotation, the collision between disk and magnetic head is more likely to cause data damage , and SSD There is no disk on the hard disk , As long as the chip is not deformed by external extrusion , Data can be saved safely , So in terms of data security, there is a big difference between mechanical hard disk and solid-state disk .

Economical and convenient ：

SSD Hard disk has great advantages in speed , But because the cost is higher ,SSD The price of hard disk is generally HDD The hard disk 2-3 times , But with the continuous development of Moore's law , Solid state disk NAND The density of flash memory chips will become larger and larger , The storage capacity is getting higher and higher , The price will be lower and lower in the future , Predictably SSD Hard disk replaces tradition HDD Hard disk is imperative . and SSD Solid state drives are superior in size and quality , The shockproof ability is also better , It is more convenient for users who often travel with computers .

Power consumption and noise are relatively high ：

HDD A high-power stepping motor is needed to drive the disk that rotates at high speed , and SSD The hard disk does not need a motor to drive , therefore HDD The power consumption of hard disk is much larger , Due to the rotation of the motor , There will be slight vibration and noise , and SSD There are no such problems with hard disk .

Capacity comparison ：

Conventional HDD The hard disk has a large capacity , The largest have 4TB, And now SSD The mainstream capacity of hard disk is 120G perhaps 240G,1T Solid state drive of , But the price is unacceptable to ordinary users .

in summary ：

If you are a mass user ,HDD The advantage in capacity is very obvious , choice HDD Is undoubtedly the best choice .

If you are a speed demander for playing games and working , There are special requirements for storage speed , Or white-collar workers who often travel , Then choose SSD.

If you are an ordinary computer user who pursues cost performance , The choice of the HDD Well .

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