What is the difference between a computer hard disk 60GB hard disk 5400 rpm and an 80GB SATA hard di

To put it simply. Hard disks can be divided into IDE and SATA interfaces. The latter is faster to access and read. Trending into the mainstream.

120g is the largest! The higher the rotational speed, the higher the teleportation speed! Nowadays, SATA hard disk is generally used, and SATA is a serial port hard disk!

The rotation speed is the rotation speed of the motor spindle in the hard disk, because the mechanical hard disk has a motor, so there is a parameter of rotational speed; SSDs, on the other hand, do not have a motor structure, so there is no speed parameter. So the two rotate at the same speed, and the whole statement is wrong.

The differences between HDDs and SSDs are as follows:

1. Read/write speed.

Solid-state: flash memory chip structure, fast read and write speed;

Mechanical: Mechanical motor, relying on motor rotation, slow read and write speed.

2. Shock resistance and drop resistance

Solid-state: there are no mechanical parts inside, even when moving at high speed or even with flipping and tilting, it will not affect normal use;

Mechanical: Disk type, data is stored in the disk sector, and data is easy to lose in case of collision.

3. Power consumption and noise.

Solid-state: low power consumption and low noise;

Mechanical: Higher power consumption and noise than SSDs.

4. Operating temperature range.

Solid-state: Most SSDs can work at -10 to 70 degrees Celsius;

Mechanical: Can only work in the range of 5 to 55 degrees Celsius.

5. Size and weight.

Solid-state: small size, light weight, 20-30 grams lighter than conventional inch HDD;

Mechanical: Generally larger in size than SSDs, it is bulkier.

6、**。Solid: Expensive;

Mechanical: Cheap.

It's not the same. Allow me to correct a small mistake in your question.

The SSD does not have the concept of rotational speed, its essence is a high-precision flash memory card, which is the inner card of the mobile phone, so there is no rotating part. Using flash memory as the storage medium, the read speed is faster than that of HDDs. SSDs do not use a magnetic head, and the seek time is almost zero.

The sequential write speed is very impressive, and most SSD manufacturers will claim that their SSDs have sustained read and write speeds of more than 500MB s! The speed of the SSD is not only reflected in the continuous read and write, but also the fast random read and write speed is the ultimate meaning of the SSD, which is most directly reflected in most of the daily operations. Related to this is the extremely low access time, the most common 7200rpm HDD has a seek time of 12-14 milliseconds, while SSDs can easily reach milliseconds or less.

The principle of ordinary hard disk, that is, mechanical hard disk, is equivalent to tape, video tape and optical disc, etc., which requires a motor to rotate to read information. So there is the concept of rotational speed.

SSDs don't rotate, so there's no such thing as rotation. The traditional hard disk 5400 refers to the speed of the motor (this speed is generally used in the small hard disk used in the inch notebook), the emergence of the solid state drive has changed the status quo of the previous traditional hard disk mechatronics, there is no mechanical rotation is more stable, faster, small size, low power consumption and other advantages, but at present, it is more expensive, and the capacity is smaller than the traditional hard disk, so it has not yet been popularized. At present, I hope to change to a 500g 5400rpm Hitachi laptop hard drive to relieve the tight space of the hard drive.

The above is a contemptible view.

Solid state drives, as the name suggests, use semiconductor chips as storage media, and there are no mechanical moving parts inside, so there is no such indicator as 5400 rpm.

The rotational speed marked on the mechanical hard bai disc refers to:

The rotational speed of the disc in R min or rpm**).

Inside the hard drive, there is a high-speed spinning disk where data is saved. When the hard disk is working, the disk rotates at a specified speed so that the head can read the data on the disk.

The speed of the hard disk is closely related to the performance of the hard disk, generally speaking, the higher the speed of the hard disk, the better the performance of the hard disk, but the noise, power consumption, and heat generation of the hard disk are also greater. Normally, laptops use an inch hard drive with a speed of 5400r min, and a few hard drives with a speed of 7200r; Most of the inch hard drives used by desktop computers rotate at 7200r min; Most of the SCSI hard disks of servers and other equipment have a speed of more than 10,000 minutes.

There are two specifications of the hard disk speed: 5400 rpm - 7200 rpm.

1. Classification of hard disk speed.

1. 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;

2. For notebook users, it is mainly 4200rpm and 5400rpm, although some companies have released 10000rpm notebook hard disks, but they are still relatively rare in the market;

3. Server users have the highest requirements for hard disk performance, and the speed of SCSI hard disks used in servers is basically 10000rpm, and even 15000rpm, which is much higher than that of household products.

Second, the influence of hard disk speed.

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.

3. Hard disk. Hard disk is one of the main storage media of a computer, consisting of one or more aluminum or glass discs. The disc is covered with a ferromagnetic material.

Hard disks include solid-state drives (SSD disks, modern hard disks), mechanical hard disks (HDD traditional hard disks), and hybrid hard disks (HHD is a new hard disk born based on traditional mechanical hard disks). SSD uses flash memory particles for storage, HDD uses magnetic disks for storage, and hybrid hard disk (HHD) is a kind of hard disk that integrates magnetic hard disk and flash memory.

The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

- 5400 rpm - 7200 rpm.

That is to say, the hard disk is 5400 when it is not read and written

When reading and writing data, the speed will be increased to 7200 rpm.

It is an environmentally friendly and energy-saving hard disk.

High to high performance. Of course, there are also disadvantages, the noise will be louder, and the heat and power consumption will be large. However, the desktops are all 7200.

back, can be ignored. If it is a pen answer notebook, most of the mainstream is still 5400 rpm, the transmission speed is about 54m s, to pursue performance, ** suitable, then 7200, 80m s transmission, if there is silver, direct ssd, you know and ask, I ask you how many numbers is 1 10?

Inside the hard disk is a BAI head, which is placed on a DU disk and rotated by the disk.

ZH, head addressing reads stored data.

You can imagine an old record player with the right to the front of the edition.

5400 and 7200 are talking about revolutions per minute, and the average desktop hard drive is 7200 revolutions.

Most of the notebooks are 5400 rpm.

There are a few notebooks that use 7200 rpm hard drives.

The data read speed is a bit faster than the 5400.

It is the maximum speed at which the head scans the hard disk per minute.........Of course, the faster you read, the faster you write, but the noise you get to ......

It's 5400-7200, and if I ask you to go in circles, you can guarantee 100 laps per minute.

It may be that there are two kinds of supply: 5400 rpm and 7200 rpm.