Is the higher the speed of the hard drive, the better? Or how to judge whether it is good or bad and

rotationlspeed is the rotation speed of the motor spindle in the hard disk, that is, the maximum number of revolutions that the hard disk platter can complete in one minute. The speed is one of the important parameters to indicate the grade of the hard disk, and it is one of the key factors that determine the internal transfer rate of the hard disk, which directly affects the speed of the hard disk to a large extent. The faster the speed of the hard disk, the faster the hard disk can find files, and the transfer speed of the relative hard disk is also improved.

The speed of the hard disk is expressed in the number of revolutions per minute, and the unit is expressed as rpm, which is the abbreviation of revolutionsperminute, which is revolutions per minute. The higher the rpm value, the faster the internal transfer rate, the shorter the access time, and the better the overall performance of the drive.

The spindle motor of the hard disk drives the platter to rotate at high speed, creating a buoyant force that causes the head to float above the platter. The faster the rotation speed to bring the sector to which the data is to be accessed under the head, the shorter the waiting time. Therefore, the rotational speed determines the speed of the hard disk to a large extent.

The speed of ordinary hard disks at home is generally 5400rpm and 7200rpm, and high-speed hard disks are also the first choice for desktop users; For notebook users, it is mainly 4200rpm and 5400rpm, although some companies have released 7200rpm notebook hard disks, but they are still relatively rare in the market; Server users have the highest requirements for hard disk performance, and the SCSI hard disk used in the server basically adopts 10000rpm, and even 15000rpm, which is much higher than that of household products.

Higher rotational speed can shorten the average seek time and actual read/write time of the hard disk, but as the speed of the hard disk continues to increase, it also brings negative effects such as increased temperature, increased wear of the motor spindle, and increased operating noise. The spin speed of notebook hard drives is lower than that of desktop hard drives, which is partly affected by this factor. The internal space of the notebook is narrow, and the size (inch) of the notebook hard disk is also designed to be smaller than that of the desktop hard disk. As the noise becomes louder, necessary noise reduction measures must be taken, which puts forward more requirements for notebook hard drive manufacturing technology.

At the same time, the speed increases, while the rest remains the same, means that the power consumption of the motor will increase, the more electricity will be consumed per unit time, and the operating time of the battery will be shortened, so that the portability of the notebook will be affected. Therefore, notebook hard drives generally use relatively low speed 4200rpm hard drives.

The rotational speed is changed with the increase of the hard disk motor, and the conventional ball bearing motor has now been completely replaced by fluiddynamic bearing motors. Liquid bearing motors are usually used in the precision machinery industry, which uses mucosal liquid oil bearings, and the oil film is used instead of balls. This avoids direct friction on the metal surface and minimizes noise and temperature. At the same time, the oil film can effectively absorb vibration and improve the seismic resistance; It can also reduce wear and improve service life.

No. The hard disk spins at a high speed and has a strong reading ability. As long as it is new, it is definitely good. Unless you've fallen. In theory, the newer, the better.

Hello, theoretically, the higher the speed of the hard disk, the better, but the higher the speed, the greater the heat, and the life is shorter.

Hard disk speed refers to the number of times per minute that the disk in the hard disk headdisk is rotated, the unit is r min, generally speaking, the higher the speed of the hard disk, the faster the read speed of the hard disk.

Generally, desktop hard disks have 5400 rpm, 7200 rpm, 10000 min and 15000 rpm, etc., at present, desktop computer hard disks 7200 rpm is the mainstream, 5400 rpm has basically withdrawn from the market, and more than 10000 rpm are SCSI and the latest SAS hard disks, mainly used in the field of server hard disks.

In addition, the standard 5400 rpm or 7200 rpm of the general hard disk is only a theoretical speed, and the actual work of the hard disk, in order to avoid the impact of too high speed on heat dissipation, the actual speed will be lower than the marked speed, we can think that the speed marked in the hard disk refers to the highest speed of the hard disk, and the speed is lower than this when it is generally working normally.

As for the performance, it can only be known through actual in-use testing. Or use the relevant hard disk detection software to see if the relevant parameters are healthy, etc.

Theoretically, the higher the speed of the hard disk, the better, but the higher the speed, the greater the calorific value, and the shorter the lifespan, and the notebook hard disk due to its small size, the current good can already achieve stable operation at 7200 rpm, and there is a bottleneck no matter how high it is.

In addition, the standard 5400 rpm or 7200 rpm of the general hard disk is only the theoretical speed, and the actual work of the hard disk, in order to avoid the impact of excessive speed on heat dissipation, the actual speed will be lower than the marked speed, we can think that the speed marked in the hard disk refers to the highest speed of the hard disk.

The capacity of a hard drive is measured in megabytes (MB mib), gigabytes (gigabytes), or terabytes (terabytes tib), and the common conversion formula is: 1TB = 1024GB, 1GB = 1024MB and 1MB = 1024KB.

However, hard disk manufacturers usually use GB, that is, 1G = 1000MB, while Windows system still uses the word "GB" to represent the "GiB" unit (1024 conversion), so the capacity we see in the BIOS or when formatting the hard disk will be smaller than the manufacturer's nominal value.

The capacity metric of a hard disk also includes the capacity of a single disk of the hard disk. The so-called single-disk capacity refers to the capacity of a single disk of the hard disk, the larger the single-disk capacity, the lower the unit cost, and the shorter the average access time.

In general, the larger the capacity of the hard drive, the cheaper the ** per byte, but the hard disk that exceeds the mainstream capacity is slightly excluded.

When we bought the hard drive, it was said that it was 500g, but the actual capacity was smaller than 500g. Because the manufacturer converts it to 1MB=1000KB, we buy a new hard drive, which is smaller than the actual amount when we bought it.

Theoretically, the higher the speed of the hard bai disk, the faster the corresponding read speed, such as 7200 rpm dao

The speed of the hard disk is faster than the 5400 rpm hard disk, but the performance of the hard disk cannot be completely measured by the speed, and it must also require stable read and write ability and minimum heat generation. Only when these conditions are combined and compared, can we judge a good performance hard drive.

The faster the speed, the better, under the premise of the same stability and low heat, in exchange for a larger cache and a higher data transfer rate.

Of course, there is also a gap between the new product and the old generation of products, and there is a gap in speed performance.

It's super good, but it's not the only measure of how good or bad it is.

Not necessarily the reason:

Advantages: The higher the speed of the hard disk, the better the stability.

The higher the speed, the greater the capacity.

The higher the rotational speed, the higher the cache.

Disadvantages: The higher the speed, the greater the power consumption.

Once in operation, the chance of movement or collision damage is higher.

Data recovery is difficult.

Differentiation of hard disk colors:

Green, blue, and black disks are classified by Western Digital according to the characteristics of its hard drives. In layman's terms, the so-called black, blue, and green disks refer to the fact that the paper on the Western Digital hard disk is black, blue, or green.

2.Blue disk, ordinary hard disk, suitable for home use. The advantage is that the performance is stronger, the performance is lower, and the cost performance is high.

The downside is that the sound is slightly louder than the green disk and the performance is slightly worse than the black disk. The cache size is 2 MB, 8 MB, 16MB. Capacities from 40 GB to 750 GB.

3.Green drive features: SATA hard drive, lower heat, quieter, and more environmentally friendly.

Green disks are energy-saving disks that are suitable for large-capacity storage. With IntelliPower technology, the rotational speed is 5400 rpm. The advantage is quiet, **low.

The disadvantages are poor performance, high latency and short life. The green disk cache size is 32 MB, 16 MB, and 64MB. There are 2 TB capacities, etc.

Theoretically, yes, high rotational speeds can improve the read/write capabilities of the hard drive.

If you use an SSD to install the system and an HDD as a storage disk, it is recommended to use a slow-speed HDD. Non-solid disk users who care about data security and don't care much about the running speed should also choose a slow speed hard disk (if you care about speed, it is better to add a solid disk as a system disk).

The reason is very simple, the slow speed of the disk noise is small, long life, not easy to damage, and low power consumption, the disadvantage is that the read and write speed is relatively slow, but the system is installed in the fixed disk, the running storage and reading is mainly on the fixed disk, the impact on the running speed of the program is very small, the information of the storage disk is of course more stable and less easy to damage as well.

Because of the use of the environment, the mobile computer notebook uses a slow-speed machine disk, and the 5400 rpm is the mainstream, and the fixed disk system for the desktop computer chooses the 5400 rpm machine with good security and durability. In other words, I was very dishonest when I played with the computer, and I often accidentally touched the main chassis, but fortunately, fortunately

At present, there are about 3 speeds of HDD: 5400-5900 rpm, 7200 rpm and 10000 rpm.

The first is widely used in notebook computers, with 5400 revolutions being the majority, but now some notebook hard disks have reached 7200 revolutions. The hard disk of desktop computers for storage purposes, such as the green disk of WD, is mostly 5400-5900 rpm. The 7200 is standard for most desktop computer hard drives, and with this hard disk as the system disk, its performance is better than that of a low-speed hard disk (of course, far inferior to an SSD).

Most of the 10,000 rpm hard disks are used in server hard disks, and there are fewer types of hard disks, which are basically not used for civilian use.

The current read/write rate of a hard drive depends on the read/write mechanism, the density of the platter, and the speed of the platter, etc., as the speed increases, the better its performance, but the louder the motor is.

The higher the speed, the better the reading and writing skills, but there will be higher noise.

Ordinary mechanical hard disk, marked with a speed of 5400 or 7200 The bigger the better, the faster the speed, the faster the data processing speed!

Hard disks are measured in terms of rotational speed and storage density, assuming that the density is constant, of course, the higher the rotational speed, the better. However, there is also a problem, the speed is fast, the failure rate will also increase, and the heat emitted will also increase in tandem.