What is the typical speed of a desktop hard drive?

At present, the hard disk of ordinary home desktops is generally 7200 rpm.

There are also 5400 rpm ones. However, 5400 rpm desktop hard drives are now relatively rare.

The hard disk of a laptop is generally 5400 rpm.

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 revolutions perminute, 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 main hard disk speed is 5400, 7200, 10000rpm, but 5400 is almost no longer on desktops, 10000 is rare, and the most common is 7200 rpm.

7200 revolutions per minute Laptops typically operate at 5400 revolutions per minute.

40g or less is generally 3600

40 80 is generally 7200

Now the better one is 1000 rpm.

It depends on the type of hard drive.

According to the different working principles, the hard disk is divided into two kinds of mechanical hard disks and solid state disks, the current common mechanical hard disk is Winchester mechanical hard disk, if used in a notebook computer, the speed of 5400 is the best, and if it is in the field of desktop application, it is the best speed of 7200 rpm.

The solid-state drive has only risen in the past two years, and the principle is completely different from that of mechanical hard disks.

The advantage of this kind of hard disk is that it is not afraid of falling, not afraid of touching, because there is no mechanical structure, so it is much stronger, the transmission rate is generally higher than that of mechanical hard disks, and the reading and writing rates are relatively average, there is no moral read rate difference between inside and outside mechanical hard disks, and the speed is about three to four times that of the ordinary hard disks mentioned above, which is currently the best kind of hard disk.

Detailed explanation of the main parameters of the hard disk:

Rotational speed: The hard disk is usually calculated by revolutions per minute (rpm): this indicator represents the speed of the spindle motor (driving the disk) of the hard disk, for example, 5400 rpm means that the spindle speed in the hard disk is 5400 revolutions per minute.

At present, the speed of mainstream notebook hard disks is 5400rpm; Desktop hard drives are 7200 rpm. But with the continuous advancement of technology, laptops and desktops have 10,000 turns.

Single-disk capacity: Single-disk capacity is one of the most important parameters of a hard disk. A hard disk is a combination of multiple storage disks, and the capacity of a single disk refers to the maximum amount of data that can be stored in a single storage disk.

With the help of vertical recording technology, the capacity of a single disc has been upgraded from 80GB to 250GB or 320GB, while Samsung has launched a maximum capacity of 334GB per disk. The increase in the capacity of a single hard disk can not only increase the total capacity, but also help reduce the production cost and improve the work stability. And the larger the capacity of a single disk, the faster its internal data transfer rate.

Average seek time: The average seek time refers to the time taken by the hard disk to move the read/write head on the disk to find the corresponding target data on the specified track, in milliseconds. When the capacity of a single disc increases, the seek action and travel distance of the head decreases, resulting in a reduction in the average seek time and faster access to the hard disk.

Cache: A cache is a temporary place for a hard drive to exchange data with the outside. When the hard disk reads and writes data, it fills and empties again and again through the cache, refills and empties again, just like a transit warehouse.

At present, most hard disk caches have reached 16MB, while for large capacity products, it is 32MB.

Internal data transfer rate: Internal transfer rate refers to the data transfer rate between the hard disk head and the cache, which is simply the speed at which the hard disk reads data from the platter and then stores it on the cache. The internal transfer rate can clearly indicate the read and write speed of the hard disk, and its level is the decisive factor in evaluating the overall performance of a hard disk.

At present, most desktop hard drives are basically between 70-90MB s, and laptop hard drives are around 55MB s.

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, 5400rpm and 7200rpm notebook hard disks can be seen in the market, but notebooks equipped with 7200rpm ** are about 300 yuan higher; 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.

This one is 7200 rpm!

Hard drive brand: WD Western Digital WD5000AAKX hard disk type: desktop computer hard drive.

Hard disk size: inches.

Hard disk capacity: 500g (the actual usable capacity of 1g on the computer is about 1g) Hard disk speed: 7200 speed.

Hard disk cache: 16M cache.

Hard disk interface: SATA3 serial port (common to SATA1, SATA2 and SATA3.)

Although the speed of the hard drive is not clearly marked, Western Digital hard drive has a feature, and you can roughly judge its speed by looking at the color of the label.

The blue ones are basically 7200 rpm, while the green ones are basically 5900 or 5400 rpm.

Your hard drive is blue-labeled, and it should definitely be 7200 rpm.

It's 7,200 revolutions per second, so it's fine on a home computer, but it's slow when you use it for work.

Usually it's 7200 rpm, 5400 for laptops, and 15000 for SAS

The blue disc is 7200 rpm, and only some green discs are 5400 rpm.

500g is generally 7200 revolutions per second.

7200 rpm, but the cache of this disk is small, only 16M

Western Digital Blue Disc 7200 RPM!

Western Digital 500GB 7200 rpm 16MB SATA3 Blue Drive (WD5000AAKX).

This is the model number of this hard drive.

HDD, brand Western Digital, 7200 rpm.

The general mechanical hard disk is 7200 rpm.

The blue disc is 7200 rpm and the green disc is 5400 rpm.

AAKX is a very poor version of this type of hard drive, and it is not easy to use at all.

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, 5400rpm and 7200rpm notebook hard disks can be seen in the market, but notebooks equipped with 7200rpm ** are about 300 yuan higher; 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.