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  Reply # 475923 30-May-2011 20:09
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Sure, no problem at all. I benched mine with CrystalDiskMark, just mounted the drive and ran the test, its very straightforward!




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  Reply # 475935 30-May-2011 20:26
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NZtechfreak: Sure, no problem at all. I benched mine with CrystalDiskMark, just mounted the drive and ran the test, its very straightforward!


I have downloaded CrystalDiscMark (CDM) but can't get the card to show in the CDM test window. I have taken the card out of my phone, put it in its SD adapter and put the adapter in my laptop. The card is showing as 'I' drive, but no I drive showing in CDM.

 
 
 
 




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  Reply # 475947 30-May-2011 20:50
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eracode:
NZtechfreak: Sure, no problem at all. I benched mine with CrystalDiskMark, just mounted the drive and ran the test, its very straightforward!


I have downloaded CrystalDiscMark (CDM) but can't get the card to show in the CDM test window. I have taken the card out of my phone, put it in its SD adapter and put the adapter in my laptop. The card is showing as 'I' drive, but no I drive showing in CDM.


OK - Got I-drive to show in CDM (had to re-start CDM AFTER I had mounted the card - duh!).

These are some results - not sure how to paste the image in here.. I have no idea if good or bad and would welcome comments:


-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :     8.316 MB/s
          Sequential Write :     6.092 MB/s
         Random Read 512KB :     8.192 MB/s
        Random Write 512KB :     0.885 MB/s
    Random Read 4KB (QD=1) :     2.388 MB/s [   583.1 IOPS]
   Random Write 4KB (QD=1) :     1.391 MB/s [   339.6 IOPS]
   Random Read 4KB (QD=32) :     2.067 MB/s [   504.7 IOPS]
  Random Write 4KB (QD=32) :     0.808 MB/s [   197.2 IOPS]





  Test : 100 MB [I: 85.1% (25.3/29.7 GB)] (x2)
  Date : 2011/05/30 20:47:11
    OS : Windows 7  SP1 [6.1 Build 7601] (x64)
 

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  Reply # 475956 30-May-2011 21:05
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Interesting, not much better than my Class 2 Sandisk, worse in some areas:



The sequential read and write speeds are easily good enough for encoding/decoding 1080p though in each of our cards though (I find it records at about 2MB/s).




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  Reply # 475978 30-May-2011 21:39
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be aware some ebay sellers use software to change 2gb kingston cards in 32gb although they only hold 2gb they even pain the cards and put it in a box with official kingston barcode

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  Reply # 476014 30-May-2011 22:48
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Are Lexar all good? from what I can find on the internet they seem to be up there as well, I'm buying some stuff off amazon us and can get a class 10 32gb for a little less than a class 4 here.



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  Reply # 476053 31-May-2011 06:39
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Ambrose_1: Are Lexar all good? from what I can find on the internet they seem to be up there as well, I'm buying some stuff off amazon us and can get a class 10 32gb for a little less than a class 4 here.


I guess the question is, if you are buying on Amazon, can you be sure that it's a genuine Lexar card?

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  Reply # 476072 31-May-2011 08:52
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This just out on XDA might be worth some comparisons

http://forum.xda-developers.com/showthread.php?t=1079852

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  Reply # 476335 31-May-2011 18:46
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eracode:
Ambrose_1: Are Lexar all good? from what I can find on the internet they seem to be up there as well, I'm buying some stuff off amazon us and can get a class 10 32gb for a little less than a class 4 here.


I guess the question is, if you are buying on Amazon, can you be sure that it's a genuine Lexar card?


I wasn't aware of fakes being sold by amazon, maybe is it was being sold through Amazons storefront but not from Amazon directly.

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  Reply # 516958 5-Sep-2011 16:30
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Has anyone had any recent experiences with 32Gb microSD(HC) cards?
I am using an A-RAM class 4 micro SDHC card but today the SG S2 phone won't recognise it's installed, a week after I've loaded it with 5Gb of media files. The card doesn't appear to be faulty per se as I can view the folders and files in a card reader and scandisk doesn't report any issues. I've replaced it meantime with a 4Gb Kingston card which the phone recognises with no problems.
Over the last few days every time I bought the phone out of sleep mode it would scan the card.

Can anyone either recommend another card or suggest why the phone doesn't see the card? Could it be a 'phone' problem? Would I have added software that could cause this?

Thanks all,

Stephen

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  Reply # 517056 5-Sep-2011 18:36

Have you tested the card with h2testw?  If there is a problem with the card (i.e. smaller capacity card reprogrammed fraudulently) it will detect any issues:

http://www.addictivetips.com/windows-tips/h2testw-checks-damaged-usb-sd-card-for-read-and-write-errors/ 

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  Reply # 517057 5-Sep-2011 18:37

Have you tested the card with h2testw?  If there is a problem with the card (i.e.e smaller capacity card reprogrammed fraudulently) it will detect any issues:

http://www.addictivetips.com/windows-tips/h2testw-checks-damaged-usb-sd-card-for-read-and-write-errors/ 

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  Reply # 517390 6-Sep-2011 11:13
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KevinL: Have you tested the card with h2testw?  If there is a problem with the card (i.e.e smaller capacity card reprogrammed fraudulently) it will detect any issues:

http://www.addictivetips.com/windows-tips/h2testw-checks-damaged-usb-sd-card-for-read-and-write-errors/ 


I have tested the card (all OK) and now reinserted it in the phone and it works but I suspect it'll glitch again at some stage. Either the card and phone are not 100% compatible or the phone is faulty.

What 32 Gb microSD cards are others using successfully?

Thanks again,
Stephen



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  Reply # 517398 6-Sep-2011 11:25
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I use a 32G Sandisk, no probs in either my HTC Desire when I had it nor my current SGS2



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  Reply # 517464 6-Sep-2011 12:56
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I had a 32GB Class 4 Apacer in my SGS2, bought from PB Technologies. Then I lost the phone and had to replace everything and got a 32GB Class 4 A-Data from Ascent. Both have been perfectly fine in the phone. I use the card for storing music and video.

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