Selection and features of operation of SD, microSD and SDHC memory cards | [help] help with the selection
The most reliable memory cards are:
The list contains 20 brands, in alphabetical order. You can vote for one or more points.
ADATA [ 28 ] ** [3,54%]
Addlink [ 1 ] ** [0,13%]
Apacer [ 9 ] ** [1,14%]
Goodram [ 8 ] ** [1,01%]
Goldkey [ 2 ] ** [0,25%]
Intenso [ 1 ] ** [0,13%]
Kingston [ 174 ] ** [21,97%]
Lexar [ 18 ] ** [2,27%]
Leef [ 4 ] ** [0,51%]
Oltramax [ 3 ] ** [0,38%]
Panasonic [ 5 ] ** [0,63%]
Samsung [ 288 ] ** [36,36%]
SanDisk [ 260 ] ** [32,83%]
Silicon power [ 35 ] ** [4,42%]
Smartbuy [ 14 ] ** [1,77%]
Sony [ 28 ] ** [3,54%]
Team [ 4 ] ** [0,51%]
Toshiba [ 24 ] ** [3,03%]
Transcend [ 164 ] ** [20,71%]
Verbatim [ 12 ] ** [1,52%]
How much do you think is optimal?
Up to 32 GB [ 173 ] ** [21,84%]
From 32 GB [ 516 ] ** [65,15%]
Total votes: 792
 



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Selection and features of operation of memory cards (SD, microSD, SDHC, SDXC, etc.)
Memory Cards - Problem Solving | Discussion flash drives

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Memory card or flash card - a compact electronic storage device used to store digital information. Modern memory cards are made on the basis of flash memory, although other technologies can be used in principle. Memory cards are widely used in electronic devices, including digital cameras, cell phones, laptops, portable digital audio players and gaming consoles. Memory cards are compact, overwritten, and, moreover, they can store data without energy consumption (non-volatility) ...


Note!
  • Never buy a card without a formal guarantee. As a rule, in online stores they are a bit cheaper but without a guarantee, remember - the miser pays twice, overpay a little and buy with a guarantee (the cards are not durable at all)!
  • Counterfeit cards are common when the declared volume does not coincide with the real one (for example, only 8 GB can be recorded on the card, although 64 GB is stated). Be careful when buying cards in suspicious places (for example, stalls, radio markets, online stores) for a suspiciously low price.
    It is possible to format a fake card to its real size:
    1. Check the h2testw utility to find out its actual size.: when reading is started after recording, the actual size of the card will be the number of megabytes / gigabyte read without errors; everything else that is marked as lost is a mythical size.
    2. Through Acronis Disk Director (or gparted in Linux), delete all partitions on the map and create a primary real size partition that you learned in the first step. There should be no empty space before partitioning! Still usingMyDiskFixYou can restore the size.
    3. Check the h2testw utility card again: if there are no errors, everything is fine. If so, go back to step 2 and reduce the size of the partition.
  • The more information "passes" through the card - the faster it will become unusable. Those. This refers to the use of the card in the DVR, regular download of torrents, use instead of or along with the system memory of Android, etc., etc. In short, the resource for writing is limited, keep in mind.

Useful information


Post has been editedAndrewP_1 - 13.11.18, 16:49
Reason for editing: Best 128GB microSD cards: a comparative test of 20 models



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Walksik @ 04/17/17, 00:24*
For how much I bought?
Test from a computer? CARTRIDER USB 3.0?

Obviously, with a computer and usb 3
1590 rub.



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I was covered with my SanDisk with a hologram,
What do you say about this card
Kingstick.
10. High Quality Flash Memory
11. Made in Taiwan
12.Sker in China
16g / 3 80 rubles
http://s.aliexpress.com/uyy6bz2a.
(from AliExpress Android)

Post has been editedAs if - 22.04.17, 01:40



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Hello to all!
Tell me with a problem: Stably once every 5-7 days Flash SmartBuy on 32 GB (standing in the phone, in the course of business Painting) knocks down the file system with NTFS on RAW, herself. those. It happens that I use the phone, everything is fine, but at some point I just can't read the files on the flash drive or use the progs that installed on the flash drive (writes "the application is not found"). We take out of the body, insert into the BB via USB reader and see Raw. It is necessary to reformat each time in NTFS and restore the programs and files from the backup.
Why is the file system itself and how to deal with it?
My version: Because Flashka Paveny, then the case is in the glitches of the microcontroller, but as I understood it means a flash drive in trash.



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* ArHAngeL8913, try to do Outlooking formatting .
Check out on Fake
1. Check the H2TestW utility category to find out its real size: when the read test starts, the real size of the card will begin, the number of megabytes / gigabytes read without errors; Everything else, labeled as lost - mythical size.
2. Through Acronis Disk Director (or gparted in Linux), delete all sections on the map and create the main section of the real size that you learned in step 1. Before the section of an empty place should not be!
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3. Check the H2TestW utility card again: if there are no errors - everything is fine. If there is - come back to step 2 and reduce the size of the section.

If not fake, and formatting does not help, it is unlikely, you can -http://flashboot.ru/files/system/



Rep: (1694)
Arhagel8913 @ 04/30/17, 17:32*
Flashka Palenny, ....., it means a flash drive in trash.

Well, it is not necessary - she can not have "indignant" with this phone - a friend can be fruitful in another



Rep: (0)
* rusigor I do not want to change the phone)) The main thing, with Flahami for 4 and 8 everything was normal. In the characteristics of the phone it is written that it supports up to 64 GB, so it's not about it. With Flashka what to do? Is it possible to make "welding" with the phone? Or Avito? She is working so that.



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Arhagel8913 @ 05/01/17, 17:21*
The characteristics of the phone says that it supports up to 64 GB

Yu! so what? I am such miracles with "such" phones observed - like you can see only Chinese flashlights, and that - "need to format", and Japanese (which all the devices see) - We do not see! So - "characteristics" I do not believe - Pruf in the studio!



Rep: (1406)
Arhagel8913 @ 05/01/17, 17:21*
In the characteristics of the phone it is written that it supports to

This does not mean that it is guaranteed working with all the cards ...
Arhagel8913 @ 05/01/17, 17:21*
Or Avito? She is working so that.

Are you seriously? : Butcher: If working - use yourself. : bubble: What kind of card at least?H2testwWhat does it talk about her?



Rep: (1)
Greetings. I bought a month ago Samsung Evo Plus Memory Card (MicroSDHC UHS-I Card) at 128 GB (on eBay). Today the card finally came. I immediately took it to test through H2TestW. The program claims that the real container is 7.4 GB. Map like the original (at least based on the package). Question to experts: who changes deceive? Chinese with eBay or H2TestW? Can this program be wrong?
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Rep: (1694)
Anika Grig @ 05/02/17, 21:32*
Can this program be wrong?

Can. And what do you suspect it?
Anika Grig @ 05/02/17, 21:32*
The program claims that the real container is 7.4 GB. Map like the original (at least based on the package).

Normal fake. As a rule, much cheaper than the original is sold. Do you like packaging? So what are the claims to the map itself?



Rep: (1)
* rusigor ,
Rusigor @ 2.05.17, 22:45 *
So what are the claims to the map itself?

Does not correspond to the container indicated on the package and seller (128 GB).
If the program duties (not the seller), then I have no reason to demand my blood from the seller.

Post has been editedAnika grig - 02.05.17, 22:12



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Anika Grig @ 02.05.17, 22:12*
If the program duties (and not the seller)
If there are doubts about the program account, I understand it ... you can -Check the size of the flash drive
But it's all in vain, I have never heard that she would have taken and Durila.
Anika Grig @ 02.05.17, 22:12*
Does not correspond to the container specified on the packaging and seller
Here you stilltoRbutwithandatse atPbuttoaboutattoand : bubble:

All you need to know about SD cards of memory so as not to get on when buying!

Post has been editedAndrewP_one - 27.11.17, 22:35



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Anika Grig @ 02.05.17, 22:12*
If the program drit ...

Somehow it is strange to hear from the buyer Ali ... Are you in general about the product about the product? 99.9% of sales sellers on Ali in their advertising lay out the screenshots of this particular program. So why don't you like it?

In short - open the dispute, mark "does not correspond to the declared size" (if there is a "Fake" item - not want it), I don't want to return the goods, "" only a refund "-" in full size ", and fasten the screenshot" not like you utilities. " All! Through 5 Rychich days - you will be returned.
Do not agree to replace the fake after the return - this is a typical divorce, it came across 3 times - always the money was returned to the moment, and the FNIKI - no one need to return, they themselves know that fake trades: yes2:



Rep: (1694)
Andrewp_one @ 02.05.17, 23:18*
(on eBay)

So even easier - there is definitely the item "Fake", and if it was bought through PayPal - it's easier to return money through it. And the refund points are not much different from Ali.
Threat First Fakes I am on eBay and Ogre ...



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Andrewp_one @ 3.05.17, 0:05*
Memory cards - solving problems. (Post andrewp_one # 60682193)

Does not write.
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Anika grig @ 03.05.17, 08:29*
Does not write.

There is already a joint program ...
Hmmm, how can you be with you, Thomas are unbelieving? : rolleyes: oh, come up with a bike} -)
I will write to this card, the files are 8-10 GB, several films say ... So, if they reproduce without errors (which is unlikely), then:
Anika Grig @ 02.05.17, 22:12*
The program duties (not the seller), then I have no reason to demand my blood from the seller.



Rep: (1694)
Andrewp_one @ 03.05.17, 10:56*
Files at 8-10 GB, several films say ... So, if they reproduce without errors (which is unlikely),

What kind of "grandfathers" ????
Once so - then:
1 - We type content from different files, approximately the size of the flash drive (for a start - at least 20GB is more "declared" 7.4?)
2 - This content is placed in the folder (any - to your taste) on the BB. Or - in an existing folder "Collect".
3 - MD5Summer.exe prog (thug) or similar to it - create a file with MD5 with the sums of "Collection"
4 - Copy the content from the folder - to the desired / verified SD card.
5 - After the copying is completed - we are experiencing the above method, we check the MD5 of the content amounts.
6 - if the check will pass "with a bang" (which is unlikely) -
7 - Remove (Safe) Card / Cardrider
8 - Re-insert a card / card reader
9 - We again check the MD5 of the amount of recorded content.
10 - If again "all coincided" - repeat items 1 - 9 under the claimed card size.

Why so, and not how invented* AndrewP_one, ? - You will listen to hours, but the amount of MD5 is generated / is not verified in real time, but with the speed of the process ... Usually - takes seconds - minutes (and not hours) ...

PS If you do not understand how the H2TestW utility works - I will explain on my fingers:
- about doing the same thing I described above -
1 - According to its predetermined algorithm, data blocks records, the composition of the block depends on its sequence number, etc. - When reading the Block, the program is easily calculated, it should be its content. Esno block names are stored in the file directory on the card, the controller of them records without any problems (which you can not say about the contents).
2 - After recording, the program reads the block data (at the addresses from the catalog), compares them with the algorithm calculated by its same. Comparison is successful - the next block is read.

What is the chip? Yes, everything is very simple! Fake does not have real memory cells, more than 7,4GB (in this and most cases) - i.e. A block is read, consisting purely of zeros ... so understandable? In this case, the comparison is invariably fail.

How does this program differ from the stunning most others? It records real data, and reads other real data, and compares them among themselves. Many other programs - simply write something, and are waiting for an answer from the controller - "recorded, or not?" - The controller (patched) Esno affirmatively nods his head. Then the type of type reads data, and asks the controller - "the data is read?" - That again nods his head ... and in the meantime - it is written (let's say) ffff, and is read - 0000. Catch the difference?

Post has been editedrusigor - 04.05.17, 21:19



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* Anika Grig,
The program unlike the packaging does not bother. And the program shows that the flash drive is the most flowering fake. The entire Chinese fake be it a flash drive, a memory card in any program on a computer shows real few gigs (depending on the declared size), and everything else is allegedly damaged. But the fact that this software is allegedly damaged, since this allegedly damaged size does not exist. In your case, the real size of your memory card 8 gigs to which is simply programmatically as a damaged sector attributed a hundred gigov.



Rep: (1406)
Rusigor @ 03.05.17, 22:58*
What kind of "grandfathers" ????

So, how many people do not trust civilization, I think the 'bike' will like it: p
It's easier now. Took a blu-ray movie (>8GB), threw off, looked (1.5H, they could hardly), there was no doubt ... That's all.
Shl. To your 'Great' claims no, of course, find out the 'hand' master: to_clue:

Post has been editedAndrewP_one - 04.05.17, 12:20



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* rusigor On the Off website asus, it is written that supports up to 64.
* AndrewP_one,
Andrewp_one @ 05/01/17, 19:34 *
This does not mean that it is guaranteed working with all the cards ...
This is possible.
Andrewp_one @ 05/01/17, 19:34 *
If working - use yourself. : bubble: What kind of card at least? H2TestW What does it talk about her?
That's it precisely that it can both work, but not for my phone. H2 GRIT that is 29.5 GB on it. But when I opened through a program, showing partition tables, it wrote that Flahi size is 2 TB, and simply there is a section active by 29.5 GB (which is shown in the explorer) and unblocked without partition on the rest of the size. I understand that this should not be. Maybe this is the problem?


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