How much is the difference between an SSD and an HDD

There are many ways to distinguish between SSDs and HDDs, first of all, in terms of appearance, HDDs are larger in volume than SSDs, so they are heavier than SSDs, and secondly, in terms of price, SSDs are much more expensive than HDDs.

The internal components of the HDD 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.

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. Another important point is that the solid state drive is used inside the chip of flash memory particles, and the mechanical hard disk is to store the data in the disk sector, when the problem of collision occurs when used, the solid state drive can minimize the possibility of data loss, compared to this mechanical hard disk is much worse.

If you don't understand the above, you can ask.

The difference is very far, the maximum continuous speed is less than one-third of the common SATA3 solid-state, and due to the unique characteristics of mechanical hard disks, the maximum speed only appears in the outermost ring of the platter, the more you think about the inside, as the linear speed decreases, the read and write also gradually decreases, and the read and write of the SSD is basically a horizontal line. The random read-write gap is even larger, only one-tenth to one-tenth of the SATA3 solid-state.

SSDs are good.

1. In terms of data read and write speed: a computer with the same configuration can achieve a read and write speed of about 500m s with an SSD, but about 150MB s with a mechanical hard disk. The difference is nearly three times the distance, making the difference in the speed of the computer's response even greater.

2. In terms of data security and shock resistance: because the mechanical hard disk is read and written by reading the platter by the magnetic head, it is easy to collide with the platter and the magnetic head during high-speed rotation and the data is damaged, especially in the process of handling, the platter will be damaged and the data will be lost, so we need to be very careful when contacting.

3. In terms of weight and volume: Compared with mechanical hard disks, solid-state drives have changed in addition to the most advanced changes, and the volume and weight will also far surpass the products of old technology.

4. In terms of noise and heat dissipation: because the SSD is made of flash memory particles, it is not equipped with mechanical parts and flash memory chips, nor does it have disks and magnetic head mechanical motors, fans, etc., so that it can ensure absolute silence, and the heat generation is also very small, and the heat dissipation is also very fast.

5. In terms of power consumption: SSDs will be relatively more energy-efficient because of the reduction of components, generally not more than 3W, but HDDs will be 5-10W, which is about two or three times larger in comparison, so SSDs are more energy-saving.

SSDs are definitely a bit more expensive than HDDs. First of all, the solid-state drive is a new product in the past two years, which is faster than the mechanical hard disk in terms of speed and read speed, and the technology is more advanced. However, at present, the SSD is only used as an installation system disk, that is, it is only used to install software for a system.

So the relative capacity is small, ** higher. Moreover, once the SSD is damaged, it is difficult to recover the data and data inside. HDD technology has matured, and after a few years of use, it will slowly age, and the read speed will be very slow.

Hard disks are based on the size of the capacity. If everyone has the same capacity, this SSD is more expensive. Usually, the price of that SSD is more expensive than that of HDD.

The ordinary 120g solid state drive is about 120 yuan, and the ** of the mechanical hard disk 1t is about 300 yuan, ** must be much higher than the mechanical state.

For a hard drive of the same capacity, an SSD is significantly more expensive than an HDD.

As far as the current civilian products are concerned, the solid state is still relatively expensive compared to the capacity.

Comparison of SSDs and HDDs.

Depending on personal needs and whether it is solid, if you need to store a lot of things, you can choose a computer 1T, otherwise choose 512G.

A 1T 256G SSD is better. Because the 256G solid-state +1T mechanical combination can not only ensure the speed of the system, but also have space to store data, it is suitable for users who need to save a large amount of data.

Although the 512G solid-state is fast, the disadvantage is that the space is small, and in addition to the system files, there is about 470G of free space left in normal use, which is suitable for users who do not need to store a large amount of data.

Advantages of SSDs:Fast read and write speeds:

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 best combination is the SSD and the HDD, the SSD as a system disk, the use speed is fast, which can greatly improve the speed of the computer, and the SSD can be used as a backup disk, and the storage data is more cost-effective. Because there is a limit to the number of reads and writes of SSDs, the lifespan will decrease with the number of reads and writes, so it is recommended to install mechanical backup data.

SSDs and HDDs have their own advantages and disadvantages, but solid-state ones are preferred.

1. Read/write speed.

Because the structure of SSDs and HDDs is completely different, and there is a qualitative leap in read and write speed. Generally speaking, the read and write speed of HDDs is between 60 and 170MB s, while the speed of SSDs can reach up to about 540MB s. So, in terms of file transfer, read/write, system operation, etc.

SSDs are much more efficient than HDDs.

2. Running noise.

Friends who have used desktops and laptops should have a clear feeling. Because today's laptops are generally SSDs, you can clearly feel the quietness of the computer running. Especially for some mechanical hard disks that have been used for a long time, you can occasionally hear the sound of grinding between the hard disk needle and the disk.

3. Power consumption and calorific value.

The power consumption and heat generation of mechanical hard disks are much greater than those of solid state drives, because solid state drives are generally MLC particles, so the power consumption is low, and it has a very low power standby function. Mechanical hard disks need a head to read data, so they need the disk to rotate, with a maximum speed of 7200rpm, which naturally generates a lot of heat. After a period of computer exercise, it can also be clearly felt with the hands.

4. Earthquake resistance.

Because the SSD is stored in particles and soldered to the motherboard, as long as it is not violently destroyed, the possibility of breaking is relatively small. There is a high-speed magnetic head inside the mechanical disk, and the disk needs to rotate at high speed during operation, so there must be a certain gap, so once it falls, it is easy to make the magnetic head, causing the magnetic head to be damaged or the disk to be scratched, resulting in damage to the hard disk.

5. Data recovery.

When the hard disk deletes the file, it only deletes the file index, and the specific file is still stored on the disk, so most of the data can be retrieved through some data recovery software. The SSD is to clear the original data before the new data can be written to the hard disk, whether it is to delete the file or format, the trim instruction will clear the data and index, which has the advantage of making the SSD equivalent to a new state, and the performance is unlikely to be reduced, so once the SSD file is deleted, the possibility of retrieving it is almost 0.

6. Service life.

The lifespan of an SSD is calculated by the number of reads and writes, generally around 100,000 times. The life of a mechanical hard disk is calculated by hours, generally around 3-50,000 hours. It's hard to compare, but if you're storing data for a long time, then HDDs are better than SSDs.

Hello! SSDs perform much better than HDDs and have no mechanics and are shock-resistant.

HDDs and SSDs have their own advantages and disadvantages. In terms of **, HDDs are much cheaper than SSDs. Also buy 1t, the ** of the mechanical hard disk may be between 300-400, while the solid state drive needs 700-1500 1.

However, when it comes to transfer speeds, SSDs outperform HDDs. The transfer speed of mechanical hard disks is about 150m s, while the entry-level SSDs can reach about 500m s, and the high-core forest end can reach 1000m s or even 2000m s 1.

In addition, SSDs are smaller than mechanical keyboards, and SSDs are not afraid of bumps and drops, while HDDs need to be protected from drops1. SSDs are largely noise-free, while mechanical HDDs are slightly quieter1.

In conclusion, which hard drive to choose depends on your needs and budget. If you have requirements for transfer speeds and have a good budget, then choosing an SSD is a good choice. If you are more sensitive to ** and do not have high requirements for transfer speed, then choosing an HDD is also a good choice.

If you feel that the capacity of the solid state is enough, the solid state alone will do. However, the solid state ** is high, and the large capacity is very expensive. The combination of small-capacity SSD and HDD is cost-effective, with both speed and capacity.

The advantage of mechanical hard disk is that the technology is relatively mature, ** is not very expensive, if you say that the reading speed is slow, in fact, the reading speed will not be slow to Africa.

Although the solid state can reach several times the read speed of the mechanical hard disk, but when there is a smart stove, some movies, documents, and seeds, put in the solid state actually does not give you a great boost. However, it should be noted that the mechanical hard disk should not choose the turtle speed, 5400 rpm and 7200 rpm are actually two worlds. Therefore, some mechanical hard disks are particularly slow when reading and writing fragmented files, and at this time, the speed of Guxiao and pretending hard disks is dozens of times better than it.

Comparison of the advantages and disadvantages of HDD and SSD:

1. Shockproof and drop-resistant: mechanical hard disks are all disk-type, and the data is stored in the disk sector. The SSD is made of flash memory particles (i.e., memory, ***, USB flash drive and other storage media), so there are no mechanical parts inside the SSD SSD, so that even in the case of high-speed movement or even with flipping and tilting, it will not affect the normal use, and the possibility of data loss can be minimized in the event of collision and **.

Compared with mechanical hard disks, solid hard has an absolute advantage.

2. Data storage speed: the speed of the mechanical hard disk is about 120MB s, the SSD speed of SATA protocol is about 500MB s, the NVME protocol (PCIe's SSD speed is about 1800MB S, and the NVME protocol (PCIe's SSD speed is about 3500MB S.

3. Power consumption: The power consumption of solid-state drives is also lower than that of mechanical hard disks.

The above content refers to the Encyclopedia - Solid State Drive.

Encyclopedia - Mechanical hard disk.

SSDs are better, and their performance and read and write speeds are much better than HDDs.

Now the mainstream ones are all used in the solid state, and the solid state in the previous inch is now used less.

Both SSDs and HDDs have their own advantages and disadvantages.

Here's a simple comparison of the two::

1. Speed SSDs have faster read and write speeds, which can access and launch applications faster, improving the overall performance of the computer. HDDs are slower.

2. Durable SSDs are generally more durable than HDDs because there are no moving parts, which means less risk of mechanical failure and data loss. Heads and platters in HDDs are fragile and therefore require more maintenance and upkeep.

3. Capacity mechanical hard disk can provide higher storage capacity, and it is cheaper. Conversely, SSDs may have a smaller capacity and be more stunning.

Hard Disk Drives (HDDs) Advantages:

The biggest advantage of HDD is that it has a large capacity and is cheap. The traditional mechanical hard disk uses a high-speed rotating disk to store data, and the magnetic head is used to read and write, and there will be a delay in the process of mechanical movement, and it is impossible to burst out multi-directional read and write Sakura data at the same time, and the current mechanical hard disk has encountered a speed bottleneck. <>