From the perspective of capacity, the flash memory type has a smaller capacity than the hard disk type, but the flash memory type has a faster reading speed than the hard disk type, and the flash memory type has a stronger anti-vibration ability. You can choose the appropriate one according to your needs. If you are only listening to songs, it is recommended to buy a flash memory type, which does not require too much capacity. If you want to use it to watch a movie, it is recommended to use a hard disk, otherwise, the movie cannot be saved.
What do laptop solid-state drives and flash memory mean?
Solid State Drive SSD is a hard disk solution (storage solution) that uses flash memory as the storage medium. Flash memory is a storage medium. The biggest difference from memory is that data will not be lost after a power failure (this is a bit similar to hard drives). The world’s largest flash memory supplier is Samsung. Flash memory products are now widely used in various industries, especially Nowadays, mobile phones, cameras, camcorders, etc., are all using flash memory as storage media. The general capacity of flash memory is 128, 256, 512, 1G, 2G, and the capacity of hard disk is generally a few gigabytes to dozens of gigabytes.
What is the difference between memory and a hard drive?
The inside and outside of the computer are not defined by the case. In terms of computer architecture, the hard disk should be the external memory of the computer. The memory is some memory inside the computer (on the motherboard), which is used to store the intermediate data and calculation results of the CPU operation. These data are sometimes stored on the hard disk. At present, the memory of the computer is generally 16M, 32M, 64M, 128M, etc. The size of the hard disk is 4.3G, 6.4G, 8G, 10G, 20G, 30G, etc.
What is the difference between flash memory and a hard drive?
Flash memory is a storage chip. It cannot write files directly. It needs the main control to realize it. For example, U disks, various memory cards, and solid-state hard drives contain one or more flash memory to achieve storage functions, that is to say, it is a storage device.
Solid-state hard drives have multiple flash memories through the master to achieve read and write functions, generally at least 2 channels (2 flash memories), there are 4 channels, 8 channels or more, the same master and flash memory, the more channels the faster the speed. Multi-channel flash memory chips are similar to hard disk RAID0, and the speed is faster.
A flash memory chip is cut according to the standard capacity. The manufacturer makes the high-quality parts into SSD, and some of the poor quality is sold to some small manufacturers of SSD or supplied to the manufacturers of U disk or memory cards. Others are of worse quality. For some manufacturers who make U disks. Because U disk and so on do not require high stability. Most U disks have a lot of bad blocks, and a small number of unstable sectors are also shielded through mass production so that the space occupied by the main control + actual use space cannot reach the nominal capacity of the U disk.
The difference between ordinary hard drives and solid-state drives and flash drives:
SSD solid-state hard drives are solid-state storage, belonging to Flash memory, with long service life, not easily damaged, and strong shock resistance. The disadvantages are expensive and small capacity.
There is a disk in the ordinary hard disk, which uses high-speed rotation to read and write information. It is very afraid of vibration and easy to damage. The advantages are a mature technology, low price, large capacity, so it has a long time of popularization and a wide area.
In addition to its faster reading speed than ordinary hard drives, SSD solid-state drives can improve computer performance. If you install an SSD solid-state drive as a system disk, the time to enter the system is more than 20% faster than normal, and the speed of opening applications such as 3DMAX and PHOTOSHOP is also faster than normal.
Flash disk is a mobile storage product that can be used to store data files in any format and easily exchange data between computers. The flash disk adopts flash memory storage media (Flash Memory) and universal serial bus (USB) interfaces, which are light and delicate, easy to use, easy to carry, large in capacity, safe and reliable, and fashionable. The hard disk commonly used in daily life is a mechanical hard disk, which is composed of a magnetic head, a disc, a motor, and a control circuit. The disc is rotating at a high-speed during work, and the head moves and seeks to read and write data on the disc. The performance is determined by the speed, the capacity of a single disc, and the cache. At present, the mechanical hard disk technology is very mature, the price is low, and the capacity is large. The disadvantage is that the shock resistance is not good and the speed is relatively slow.
The solid-state drive is composed of multiple flash memory chips, and its performance is determined by the number of flash memory chips and the number of channels. It has good shock resistance and fast speed. But the technology is not mature yet, the cost is high, the capacity is small, the more data stored, the more severe the performance degradation, and the theoretical read and write life is only 5000 times. At present, it is not suitable as a data storage disk, but it can still improve system performance as a system disk.
What is flash memory?
Flash memory is a non-volatile memory, and data will not be lost even if the power is turned off. Flash memory is Flash Memory, and data can be saved even when the power is turned off. It is equivalent to a set of chips. Flash memory is usually used to save setting information. Flash memory access is relatively fast, has no noise, and has low heat dissipation.