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mariewyarbrough-blog · 6 years ago

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How to choose an excellent U disk?

Have you ever bought a U-disk by the roadside and used it twice before? Have you ever tried to be a character loser for one year and finally vomited in anger after you selected a company's customized U-disk in activities such as the annual meeting? Well, if you have the above unfortunate experience, you should know that the U disk is divided into good and bad, and the key point is the U disk chip there... If you don't want to lose data, it's important to choose a good flash drive. You don't need to know how to recover deleted files from flash drive.

There are two main types of U-disk chips, one is the middle-end MLC chip, which can be completely brushed more than 3000 times; the other is the low-end TLC chip, which can be brushed only 300-500 times. As long as it is a normal retail U disk, we can generally use ChipEasy chip carefree to detect whether the chip used by U disk is TLC or reliable MLC.

How to detect whether the U-disk chip is a pitfalls TLC?

After turning on the ChipEasy chip, we can see that TLC is the type of flash memory that drives the customized U disk for life, but the flash particles do come from the famous Andisk, and the U disk score also reaches a relatively reliable 38 points.

It can be seen that the U disk chip often determines the U disk score. Well, let's talk about the advantages and disadvantages of the U disk of TLC chip.

Advantages and disadvantages of U disk of TLC chip

TLC chip U disk has only one advantage, that is, cheap, so that U disk production costs are reduced.

In fact, there is only one disadvantage of the U disk of TLC chip, that is, the number of erasable writes is relatively small, in other words, relatively short-lived.

The U disk of TLC chip is really short-lived?

Maybe many friends will ask, is the U disk of TLC chip really short-lived?

The answer is relative. Compared with those expansion disks and black U disks with quality chips, the U disks of TLC chips actually have a long life. At least a TCL of more than 4,000 will not have any quality problems in normal use.

Compared with those U-disks using MLC chips, the U-disks of TLC chips are much shorter. If other faults are eliminated, the life of a U-disk of MLC chips is 5 to 10 times longer than that of the U-disks of TLC chips.

Let's use another analogy.

For those who often write data repeatedly every day, "TLC" U disk is really short-lived, assuming two times a day, it will be scrapped in less than a year... Write here, suddenly know why some U disk only one year warranty time.

But for users who don't have more than a few U disks a week, assuming that a broken "TLC" U disk can last 250 weeks or about five years, twice a week. Write here, and suddenly understand why the U disk can be up to five years of warranty.

What does it mean that "TLC" U disk can only be written 500 times?

"TLC U disk" can only be written 500 times, which does not mean that the U disk will be destroyed 500 times. For a simple example, suppose an 8G U disk is written in 8G, even once; the second time is written in 3G, and the second time is written in 5G; the third time is written in 1G.

To put it another way, assuming that an 8G U disk can only be erased 500 times in its lifetime, the disk can theoretically load 4000G files over and over again in its lifetime. The U disk of MLC chip can load 24,000 to 80,000 G at least in its lifetime. This is why the U disk of TLC chip is relatively short-lived.

The U disk of TLC chip is in a huge pit.

The U disk of TLC chip has a problem that we all ignore. That is, if we delete and write data repeatedly to the same area of the U disk chip (U disk does not write balancing algorithm), once the number of times reaches 300-500, the U disk will die almost (it may be able to read normally, but it may not be able to continue to write data)...

Of course, we can use "mass production" U disk to make U disk come back to life (automatically shielding those bad areas in the chip).

Although SSDs and U disks use the same chips in a sense, SSDs will automatically balance the writing blocks, U disks will not, so that's why TLC is said to be shorter.

Will reading and not writing affect the life of TLC U disk?

The life of U disk is only related to erase and write, but not to read. So, in theory, no matter how many times you read the U disk, as long as the quality of the U disk hardware is acceptable, then the U disk chip will be okay, and the U disk will be okay. (Remember, this is theoretical)

How to prolong the life of U disk of TLC chip?

If there is a way to extend the life of TLC chip U disk, there is only one way, that is, after writing data, do not delete, until full, then delete all or format directly (equivalent to a complete erase). This avoids the possibility of duplicating data writing at a particular location.

How to choose a non-TLC chip U disk?

Finally, let's talk about the experience of purchasing U-disk.

For men and women who like good-looking things, there is only one point of experience that can be said. Buy it when you see it.

For the netizens who like to listen to small editors and other bricks, experience is to first ask whether the customer service U disk chip is TLC or MLC, and then look at the netizens'U disk writing and reading speed test sheets.

There is also an experience for reference. Udisk writing speed under USB 2.0 is generally only 5M/s, 8M/s is a high-quality Udisk, 10M/s is absolutely excellent! Because many USB 3.0-supported Udisk writing speed under USB 3.0 is also less than 10M/s (small edition also has such a pit father goods).

You can download the tool ChipGenius V4.00 chip wizard for U disk detection:

Software interface:

It is divided into two parts, one is the list box of USB devices, the other is the detailed information of the selected devices.

A: Date of database update. Every time the software is opened, it will be automatically checked. If there is an updated database, it will be updated. If so, use a local database; you can use it safely even on computers that are not connected to the Internet.

B: You can refresh the list of USB devices by clicking on the button next to it; it's rarely used in general.

C: Choosing USB devices that need to be tested (e.g. USB disk/MP3/MP4/camera/mouse/HUB...) is a bit complicated for novices, but it doesn't matter. The chip wizard will automatically locate the latest inserted USB disk device. Are you relieved?_________

D: Click on the next button to get a one-click screenshot, which is a very human function, because when you post for help, you need to upload the ChipGenius screenshot, so that the experts in the digital home can judge the problem or provide suggestions. Of course, if you want to copy and paste text information directly, it is also possible (as if it is more convenient to paste text information on the site). ________

E: This column shows mainly USB device interface information, USB 3.0, USB 2.1, USB 2.0, USB 1.1. It can also detect the power consumption of USB devices, which is now an energy-saving society and is necessary for every digital product (at least for digital players, it must be D!). As an aside, I have seen the member DIY USB power detector before, and I also want one. Now I don't want one.^^

F: The VID, PID and SN of USB devices are familiar to many professionals. Let me popularize science again: [vendor ID (manufacturer ID) and product ID (product ID). VID is to apply to the standard organization (of course you can write freely). PID is defined by the manufacturer itself. PID/VID can only identify a standard USB device. ]

G: There's nothing to say about the information of USB device suppliers; the revised version number of the device, which is a newly added function of V4, is mainly used by some professionals.

H: There seems to be nothing to say about the manufacturer of the product; the revised version number of the product, which is the original version number in V3.

I: The point has finally come! Chip manufacturers and chip models, the majority of U disk boot production enthusiasts / users are most concerned about the information (in fact, it is also our most concerned ^___________

J: For some counterfeit Kingston U-disks, we would like to remind you here that it may be fake black disks and other information. Let us take the chip wizard to buy U disk more confident! Is it very intimate? Do you feel warm ______________

K: The detected USB device or master matching data or tool software can be downloaded. Click on the Earth in front of you to open it directly

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