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SD Card test program, is it fake? Here's how to tell for sure

20th July 2010, 06:08 AM |#1  
ifly4vamerica's Avatar
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Hey all, haven't seen anything like this so I figured I'd post it. I bought one of the 29 dollar 32GB sd cards on ebay just to do a test. It was listed as 100% new in packaging 32 GB sacn disk micro sd card. I figured it was a fake but knew I could get my $$ back via paypal. Anyway I used a program called h2testw, some of you probably have heard about it but for those who haven't here is a short write up on it and a download link.

http://mympx.org/Downloads/p13_secti.../p13_fileid/13

Basically it fills the card with known data then tries to read it back. here is what I got back when testing the "32GB" card from ebay. As you can see 1GB was written and read the other 31gb was lost, because there wasn't anything written as the card was only a 1GB. Below is the text output from h2testw. Was trying to put in the screenshot from the actual program but i guess I can't figure out how to do that. It should also be noted I ras a bench test with atto bench 32 and got fine 7 write and 14 read speeds. I'll try to insert that image also. Hopefully this will help somebody out if they think they have a bad card.

The media is likely to be defective.
113.5 MByte OK (232609 sectors)
31.1 GByte DATA LOST (65287007 sectors)
Details:31.1 GByte overwritten (65287007 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
0 KByte corrupted (0 sectors)
16 MByte aliased memory (32768 sectors)
First error at offset: 0x0000000000000000
Expected: 0x0000000000000000
Found: 0x00000007ce9b0000
H2testw version 1.3
Writing speed: 5.82 MByte/s
Reading speed: 8.92 MByte/s
H2testw v1.4
Last edited by ifly4vamerica; 15th June 2013 at 01:55 PM.
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21st July 2010, 06:46 AM |#2  
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Great program to have. I will stick that in my Utility folder. Thanks!
17th May 2011, 10:35 AM |#3  
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I got a fake one too
here's the details for a fake A DATA 32GB SD card

https://sites.google.com/a/intellige...m/fakesdcards/
17th May 2011, 12:11 PM |#4  
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Cool

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18th June 2011, 08:00 PM |#5  
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Nice program! Tested my 16gb and it's all good
12th July 2011, 04:11 AM |#6  
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I appreciate the information I am currently running this test. It seems to be taking a looooong time. I purchased a 32 gb memorette on ebay and after recieving an email from another ebayer that he also purchased the same card and found it is only 4gb with this tester, I decided to test mine after having some pictures corrupted and lost. Time remaining says 2hrs 31 min just wondering if this is normal.
13th July 2011, 12:56 AM |#7  
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So, wait, you bought a "32 gig" card, how much did you spend on this marvel of technology? Also, how do you know the program you used works as stated? Did you format it in a windows machine?

Just curious.
13th July 2011, 08:02 AM |#8  
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Cool I was looking for a good memory test. I am skeptical since because most are not good. Linux uses qmem86 which is good but it does take.about 1 hour per gb on a good desktop I am thinking it would.be worth trying to compile for android.
7th August 2011, 11:59 PM |#9  
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Thumbs up
Thanks this can come in handy
30th August 2011, 12:12 AM |#10  
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Quote:
Originally Posted by bac1995

I appreciate the information I am currently running this test. It seems to be taking a looooong time. I purchased a 32 gb memorette on ebay and after recieving an email from another ebayer that he also purchased the same card and found it is only 4gb with this tester, I decided to test mine after having some pictures corrupted and lost. Time remaining says 2hrs 31 min just wondering if this is normal.

Memorette is a fake south Korean company all there SD cards are fake.

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