How To Quickly Choose A Cost-effective Mobile Hard Drive for PCs

How-TO Solid State Drive (SSD)

In fact, there is basic common sense when choosing a mobile hard drive and choosing a hard drive, and both depend on the read and write speed!

When it comes to portable hard drives, I believe that everyone has a sense of familiarity. Familiarity is because everyone in daily life and work will come into contact with them. The strange thing is that everyone does not know portable hard drives very well.

There are also big differences between mobile hard disks. We need to understand why the read and to write speeds of hard disks differ so much before we can reasonably choose mobile hard disks. So how to choose a mobile hard drive? Next, please let me know through the article together with the editor!  

The difference between SSD and HDD

SSD and HHD have their own advantages and disadvantages, so the choice must be determined according to needs.

There is no mechanical structure inside the SSD, no data search time, delay time, and search time. The read and write speed is fast, and it is very durable, and it is not afraid of vibration. Because there is no mechanical structure, there is basically no noise when working, and flash memory-based SSDs are also light-weight.

Everyone should be familiar with HDD. HDD is composed of disc, magnetic head, disc shaft and control motor, head controller, data converter, revolver, cache, etc. Data is stored on the platters, read and written by the magnetic head on the platters at thousands of revolutions per minute, so the mechanical hard disk is bulky and afraid of vibration and bumps, and there is noise when working, but the platters have a long life. Low power consumption, large space, low cost, but the speed performance is relatively average.

That is to say, the advantage of solid-state hard drives lies in their read and write speeds. They are stable, durable, silent, and compact. Mechanical hard drives have large storage spaces, low cost and long service life, and data security is guaranteed.

Read and write speed and interface

Random read: the speed of randomly opening small files in the mobile hard disk/the speed of randomly copying small files from the mobile hard disk to the computer.

The read and write speed of the hard disk is partly determined by the interface and partly determined by the storage medium.

Sequential reading and sequential writing, these two refer to the speed of opening and copying large files in the hard disk, while random reading and random writing refer to randomly opening and copying small files, and randomly copying small files to the computer speed. These data are the key to considering the performance of a hard disk. Another important influence is the interface, such as USB2.0 and USB3.0.

To measure the read and write sequence read and write speed of different hard disks, you can use Disk Speed ​​Test to test, while the random read and write speed can be seen on the QuickBench with accurate values ​​to measure the read and write speed of the 4K byte option of the solid state hard disk. If you are interested, you can try the hard drive that you can master. Is it not much different from the average read and write speed?

To measure the read and write sequence read and write speed of different hard disks, you can use Disk Speed Test to test, while the random read and write speed can be seen on the QuickBench with accurate values ​​to measure the read and write speed of the 4K byte option of the solid state hard disk. If you are interested, you can try the hard drive that you can master. Is it not much different from the average read and write speed?

If it is said that the interface affects, then it is the impact of the USB specification, which generally limits the maximum speed of reading and writing, and USB 3.1 is higher than USB 3.0, and 3.0 is higher than 2.0. Of course, there is one more thing to be concerned about. The maximum speed of the specification is generally not reached, and the speed of daily use is subject to the test.

Points to note for mobile hard drives

Most of today’s mobile hard disks are mechanical disks(HHD). The cost of solid-state hard disks(SSD) is relatively high. In contrast, mechanical disks are more cost-effective. The key to choosing a suitable mobile hard disk is the read and write speed and capacity. A mechanical disk with high-cost performance is naturally the first choice.

If the budget is sufficient, it is still recommended to buy the mobile hard disk directly. The quality of the mobile hard disk is excellent and the current price/performance ratio is also very high.

Here are some mobile hard drives that I personally think are not bad for your reference.

Recommended SSD :

1.Samsung T3 250GB

Samsung T3 250GB

Recommended reason:

As one of the few 1.8-inch SSD mobile hard drives on the market, the Samsung T3 series is exquisite and compact, and there is also a maximum 2TB version available.

Whether it is sequential read/write, random read/write, or the level of available capacity ratio, it is more prominent.

2. Lacie Porsche Design 1T


LaCie Porsche Design 1TB USB-C Mobile Hard disk

Reason for recommendation:

Maybe you haven’t got the Lacie brand yet, but Lunjia is a big French brand and recognized as a leading manufacturer of storage devices in Europe. Among the 23 HDD products we tested, the comprehensive reading and writing speed is the fastest, and the appearance is also high-level, cold and abstinent, and will not let you down.

In addition, the overall performance of other HDD mobile hard disks has little difference. You can choose according to your favorite appearance.

Write it at the end

SSD is not recommended: AIGO SD01S 240G

Reasons for not recommending:

The price of the SSD mobile hard disk tested in this test is not much different. In theory, there should be no significant difference in performance, but the AIGO has to create a surprise: the sequential read and write speeds and random read and write speeds are both low (But still better than ordinary mechanical hard drives), the cost performance can be said to be very low

Tips 1

Sequential reading: the speed of opening large files in the mobile hard disk/the speed of copying large files from the mobile hard disk to the computer.

Sequential writing: The speed at which large files are copied from the computer to the mobile hard disk.

Random read: the speed of randomly opening small files in the mobile hard disk/the speed of randomly copying small files from the mobile hard disk to the computer.

Random write: the speed of randomly copying small files from the computer folder to the mobile hard disk.

Tips 2

USB 3.0 and USB 3.1 are actually a USB specification initiated by companies such as Intel. It can be simply understood that this specification will limit the maximum reading and writing speed of mobile hard disks, and the limit value of USB 3.1 is much higher than that of USB 3.0, and the read and write speed of our test equipment is far below this value, so it’s good to know about it, it’s useless.

Anna

Anna began using PCs in 2001. She has worked at companies like Lenovo and Dell.

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