The fast read speed of the hard disk depends on what parameters

There are two main factors that determine the file read and write speed of an HDD.

First, it is the speed of the spindle motor, the higher the speed, the faster the speed.

Second, there is single-disk capacity, or storage density. The larger the capacity of a single disk, the higher the storage density and the faster the read and write speeds.

Cache capacity is not useful for sustained transfer speeds.

SSDs are faster than HDDs, and the key is that they are fully semisemiconductor-structured, with little to no seek time, so they are fast.

What parameters does the reading speed of the hard disk look at? Is it to look at the rotational speed? Or is it caching? -- Look at both, and the transfer rate.

In addition, I heard that the SSD reads very fast--- right, it is different from the general hard disk is that the general hard disk has a mechanical device, it does not, so fast, its reading method is similar to flash memory.

The SSD is like a very large USB flash drive, which has a fast reading speed, but a shorter lifespan and is more expensive. The average hard drive** is cheap and has a long lifespan, but the read speed is much slower than that of an SSD. Therefore, some people use SSDs as C disks in exchange for faster system speed.

The speed of the hard disk is not too much different, as long as it is a general application, you can not look at these, you should pay attention to the quality and capacity of the hard disk,**.

To put it simply, depending on the parameters of the hard disk, the reading speed of various models is different. The faster the read speed, the better the performance, and the more expensive it will be. For example.

SSDs have faster read speeds than mechanical drives, and even if they have the same capacity, SSDs will be much more expensive.

Hard disks. The average read and write speed is 30MB to 45MB/s. The real transfer speed of the hard disk is affected by the internal transfer rate of the hard disk, and its stable transfer rate is generally between 30MB and 45MB.

Hard disks are mechanical hard disk drives (HDDs) and solid state drives.

SSD). Mechanical hard disk is a traditional ordinary hard disk, which is mainly composed of: platter, head, platter hinge and control motor, head controller, data converter, interface, cache and other parts.

The head can move along the radius of the platter, and with the high-speed rotation of the platter at several thousand revolutions per minute, the head can be positioned at the designated position of the platter for data reading and writing operations. The information is written to the disk by the electromagnetic current through the magnetic head very close to the magnetic surface, and the electromagnetic current changes the polarity, and the information can be read in the opposite way. As a precision device, dust is the enemy of the hard disk, so the air entering the hard disk must be filtered.

All the platters in the mechanical hard disk are installed on a rotating axis, each platter is parallel to each other, there is a magnetic head on the storage surface of each disc, the distance between the magnetic head and the platter is only, the higher level of Mengbi has been reached, all the magnetic heads are connected to a magnetic head controller, and the magnetic head controller is responsible for the movement of each magnetic head.

First, look at the speed of the hard disk.

The higher the speed, the faster the read and write speed, which must be more than 7200 revolutions.

Second, look at the hard disk video memory.

The size of the video memory will affect the read and write speed of the hard drive. 32 is a low configuration, and the cache above 64M is fast.

3. Look at the interface of the hard disk.

SATA3 is faster than SATA2, but this actually has little impact and can be basically ignored.

Fourth, look at the seek time and continuous transmission speed.

If the seek time is less than 14ms, the installation system is faster, and if it is 12, it is better. Continuous transmission, which should not be less than 180m seconds. This is generally not marked, and you have to look at the evaluation to know.

In fact, if you want to make the hard drive fast, it is better to buy an SSD. Random read/write (i.e., the seek speed of the hard disk) is at least 100 times faster than that of a mechanical disk!

Between 30MB-45MB.

The real transfer speed of the hard disk is affected by the internal transfer rate of the hard disk, and its stable transfer rate is generally between 30MB s and 45MB s. In this way, with the continuous improvement of the running speed of hardware such as CPU and memory, the low speed of ATA hard disk has gradually become a bottleneck that affects the running speed of the whole machine.