The difference between a laptop SSD and an HDD

The information age is the era in which information generates value, and its representative symbol is"Computers"It is mainly based on information technology, focusing on the creation and development of knowledge, and behind the computer, there is an organic combination of a series of precision instruments and wisdom, of which the hard disk is the most important storage device of the computer.

Solid-state drives and mechanical hard disks are storage devices, but the read and write speed of solid-state drives is significantly faster than that of mechanical hard disks, so in general, they will choose to use solid-state disks as system disks, so that they can start faster, and then make another mechanical hard disk, as a storage device, from the perspective of life, the life of mechanical hard disks is relatively longer, so it has not been eliminated for the time being.

Advantages of SSDs:

1. Fast data loading.

2. Unlike mechanical hard disks, which are afraid of movement and environmental noise (the head is more squeamish) SSDs have shortcomings.

1. **, now** not very high, right? It's basically acceptable.

2. Data security is not as good as mechanical hard disk. It is better to store important data (and some personal files) in the hard drive.

3. There is a limit on the amount of writing, that is, the service life.

For 2 and 3, I think it is worth 4 to 5 years for electronic products, and it is good to back up the data in time.

It is recommended to have dual hard drives, or prepare a portable hard disk to store data. The operating system, common software, and large software are placed in the solid state.

Computer hard drives. The differences between solid state and mechanical are as follows:

First, the scope of application is different.

Solid state drives. The range of applications is higher than that of HDDs.

The range of use is wider, SSDs play a very important part in the electronic world and are very valued by people in the industry, while HDDs are not as flexible as SSDs. At present, the largest capacity volume of SSDs is rumored to be IBM has begun to test 4TB high-speed SSD packs, and the difference between the two is very large compared to HDDs in terms of TB capacity.

Second, the degree of complexity is different.

The internal components of the mechanical hard disk are more complex than the SSD, and there are motors and fans that the SSD does not have, so the SSD has a great advantage over the HDD in this regard, and the SSD is much quieter than the HDD when working. In addition, in terms of power consumption, SSDs are also lower than traditional HDDs.

Third, the read and write speed is different.

In terms of the important read and write speed of hard disks, the read and write speed of solid-state drives is higher than that of mechanical hard disks, generally about 2 times higher than the speed of read and write capabilities, SLC only has a read and write life of 100,000 times, and the low-cost MLC has a read and write life of only 10,000 times, which has no advantage over traditional hard disks.

AbstractCompared with mechanical hard disks, solid-state drives have the advantage of fast read speed, and the boot speed is significantly improved after installation. Solid-state drives have a longer service life, and MLC and TLC are two more common types of flash memory particles, and MLC is more durable.

Which is better, laptop HDD or SSD?

Hello dear, SSDs are better than HDDs.

Compared with HDDs, SSDs have the advantage of fast read speeds, and the boot speed is significantly improved after installation. Solid-state drives have a longer service life, and MLC and TLC are two more common types of flash memory particles, and MLC is more durable.

And the SSD boots up quickly, and there is no motor to accelerate the process of spinning. The biggest advantage of SSDs is that there is almost no seek time, and SSDs are just a common drive letter in the operating system, and users can use it completely as a storage medium.

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Comparison of the difference between SSD and HDD:

SSD advantages: no noise, extremely fast read and write speed, vibration resistance, low heat generation, lightweight, etc.

Advantages of mechanical hard disk: large capacity, cheap.

Disadvantages of SSD: **High, small capacity, SSD has a limited number of PE writes, so the life span is lower than that of HDD.

Disadvantages of HDD: high noise, fear of vibration, high heat generation, slow read and write speed.

Ordinary hard disks are mechanical hard disks.

Solid-state drives, which are different from mechanical hard disks, have no platters and mechanical rotation structures in them, are light, not afraid of falling, and are mainly very fast. The random read and write speed is about 100 times that of the mechanical hard disk, and the continuous transmission is 3 to 5 times.

But SSDs are more expensive, and the ** of a 128 SSD is about the same as a 1T HDD.

Although the SSD has a lifespan, the current consumer-grade SSD basically solves this problem, but it will slow down over time, for example, after 2 years, his read and write speed is only 70% of the original. It is characterized by fast read and write speeds, and the current best Samsung 840 Pro has read and write speeds that exceed the upper limit of 600ms for SATA 3 interfaces. All aspects of performance surpass HDDs.

The downside is that it's expensive, and there's no possibility of a lot of short-term price reductions. If you don't have power for 3 months, you may lose your data.

Mechanical hard disk, with the best 10,000 rpm hard disk, the read and write speed is only about 220MB, and the better home mechanical hard disk, 7200 rpm, 1T single disk is only 190MS.

The advantage is that it is cheap, and a 500g hard drive is less than 350 yuan. Data is stored stably, and theoretically, after the data is written, it can be stored for decades as long as it is not destroyed by fire or the like.

Mechanical hard disk is what most of us are using now, the construction principle is that the hard disk is made of 1 or several storage disks that can read and write data, and there is a read-write gun on the disk body, a bit like an old-fashioned optical disc drive, and there is a motor in the hard disk to drive the storage disk to rotate, so that different parts of the data can be read. The advantages are low production cost and large capacity. However, the stability and read and write data speed are not as good as SSDs.

SSDs are a bit like a USB flash drive, but the circuit board is more complex. There are no motors and storage disks like mechanical hard disks, and mainly semiconductor solids are used as data storage media. The advantages are fast, stable, and long life, but at present, it is the most expensive.

Generally audiophiles will use it.

Most of today's notebooks use inch HDDs, while desktops use inch HDDs.

For example, Apple's iPad uses SSDs, and some ultra-thin notebooks also use SSDs.

A laptop SSD is a type of computer external storage device based on persistent or non-persistent memory.

Notebook 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.

SSDs have the following advantages over HDDs:

1. Fast access speed, which is also the biggest advantage of the solid state drive, the solid state drive has no head, the use of fast random read, the read delay is very small, whether it is to start the system or run large software, the speed of the solid state drive has a qualitative leap compared with the mainstream mechanical hard disk.

2. Shockproof and drop-resistant, there is no mechanical moving parts inside the solid state drive, no mechanical failure will occur, and it is not afraid of touching.

Impacts, shocks, vibrations. This does not affect normal use, even when moving at high speeds or even with flipping and tilting, and minimizes the possibility of data loss in the event of an accidental drop or collision with a hard object.

3. Low heating, zero noise, due to the absence of mechanical motor, the heat of the flash memory chip is small, the noise value is 0 decibels when working, and the heat generation of the flash memory chip is small.

4. Small size, compared with traditional mechanical hard disks, SSDs are smaller in size, lighter in weight, and easy to carry.

The disadvantages of SSDs over HDDs are as follows:

1. High cost and small capacity, compared with mechanical hard disks, the general solid-state hard disk capacity is much smaller, and the current capacity is larger.

The state hard drive is also only 128GB. In terms of price, the current price of an SSD is 3-5 times that of an HDD.

2. The writing speed is relatively slow, and the SSD has obvious advantages in data reading, but it is more important than the traditional hard disk in data writing.

It is slow to come, and it is easy to produce fragments.

3. The life span is relatively short, the write life of the general flash memory SSD is 10,000 to 100,000 times, and the special one can reach 1 million to 5 million times, which is nothing for U disk or other digital products, but the write speed of the SSD on the system will easily exceed this number.

4. The reliability is relatively low, if the SSD data is damaged, it is difficult to repair, and the current data repair technology is basic.

It is not possible to recover data in a damaged chip. And HDDs can also save some data.