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cajunflavoredbob
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Quote:
Originally Posted by phoneyericsson View Post
Hi all,

what's it like when you stick one of those cards in your Android full of music? I have an iPod Classic 160GB and now I'd like a bigger screen and touch for easier use. But I've heard terrible things about these SD cards in Android phones. I don't care about screenshots with big numbers,
The big numbers are the only things relevant to this thread.
Quote:
-what is it like in practical use?
Use of what? An SD card? They aren't much different than my iPod. They just holds less music. Use of them is dependent on the device you use it with.
Quote:
-Does music transfer quickly?
This isn't really up to the card unless you take it out of the device to transfer content. It's really up to your PC's ability to keep up in that case. Again, not much different than transferring music to my iPod.
Quote:
-When you de-tach your phone does it freeze while the SD loads? (some crappy mp3 players do).
This is dependent on the device you are using, not the card. I've never heard of this except in the crappy MP3 Players. It's always best to eject the device first, however it shouldn't freeze anything.
Quote:
-What happens when you load your music player, does it freeze, does it freeze the first time after music transfer or ever time, how long does it freeze?
Again, this has nothing to do with the card, but with the device you are looking to get.
Quote:
-Do you have to format your SD card because of normal phone use? How often?
Yet again, this is up to the device you use on how crappy it constructs a file system. Nothing to do with the card at all.
Quote:
-How do you find out how fast your phone can read the SD?
Do the test we've been doing but with the card mounted in the device. There are also some SD benchmark apps in the Android Market.
Quote:
That's all I care about. I have a feeling the only way I'll find out is by spending a lot of money, getting angry and buying another iPod. The Touch is waaaaay too expensive in my view, I'm not paying for Apple's champaign parties with my money. 32-64GB is expensive, it's the 8GB people who get cheap devices not us audio lovers.
Only one of your questions is dependent on the SD card. All of the other ones depend on the device you use for performance. Your brain isn't much good on its own anymore than the SD card is without a device to use it in.
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slvrhwk
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Just received my 32GB Sandisk Class 4 card from Amazon. Here are the results. What do you guys think?

 
dungm
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May I have a question, which class of SDCard that suitable for my SGS2 for multimedia purpose, i.e. HD movie...?
Your advise is appreaciated
 
cajunflavoredbob
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May I have a question, which class of SDCard that suitable for my SGS2 for multimedia purpose, i.e. HD movie...?
Your advise is appreaciated
Get which ever card allows you to search a thread before asking a question that's been answered several times before.
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phoneyericsson
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Quote:
Originally Posted by dungm View Post
May I have a question, which class of SDCard that suitable for my SGS2 for multimedia purpose, i.e. HD movie...?
Your advise is appreaciated
Hi, there are at least two considerations I believe. The first, regarding SD class for a HD movie, I found a few useful threads including this one:

http://forum.xda-developers.com/show....php?t=1384247

Here, a number of people who've tested various classes say higher classes such as class 10 has poor performance in some ways and that class 4 actually performed better. I would also ask this question in the section for each phone, there will definitely be people who've bought cards that can tell you about their experience.

The second consideration is that each phone has specific SD card read speeds. This information I'm finding hard to find. Again, the SGS2 thread may have someone who knows. I've been doing the same with my own phone. The SGS2 is clearly a high-performance phone so I doubt you'll be disappointed but it's worth finding out anyway!

Basically, having a great SD but poor phone read speed or vice versa negatively affects the other.

Good luck!
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phonemobi
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(Last edited by phonemobi; 12th May 2012 at 05:12 AM.) Reason: Added more cards
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6 microsd cards.

Tested on a netbook's Realtek PCIE Cardreader, using Kingston SDCARD adaptor.

Strangely, the 8GB Transcend Class 6 is faster than both the 8GB/16GB Transcend Class 10.
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davidwyl
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here is the result for my Sandisk Class4 32GB.....
*decided to move from Patriot Class10 16GB to Sandisk Class4 32GB due to the 4k & 4kQD32 write result.
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Chris4evernoob
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Here are my results for my Gigastone 32gig class 4 . Tested directly though micro sd port.
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garychencool
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Default Patriot LX Series 32GB microSDHC Class 10 Card - PSF32GMCSDHC10

So I recently bought the Patriot LX Series 32GB microSDHC Class 10 Card which was just $40 at a store. The Model: PSF32GMCSDHC10

Here's the initial run by SD Tools, the Android App, this was the best out of the 10 tests.



Here's the CrystalDiskMark Test using Windows 7 and a USB Card Reader

This is a single test using 500MB


Test Stats:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (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 : 19.894 MB/s
Sequential Write : 10.710 MB/s
Random Read 512KB : 19.517 MB/s
Random Write 512KB : 0.855 MB/s
Random Read 4KB (QD=1) : 3.675 MB/s [ 897.1 IOPS]
Random Write 4KB (QD=1) : 0.008 MB/s [ 2.0 IOPS]
Random Read 4KB (QD=32) : 3.658 MB/s [ 893.0 IOPS]
Random Write 4KB (QD=32) : 0.008 MB/s [ 2.0 IOPS]

Test : 500 MB [L: 0.0% (0.0/29.8 GB)] (x1)
Date : 2012/04/24 15:54:43
OS : Windows 7 Ultimate Edition [6.1 Build 7600] (x86)

This is a single test using 4000MB


Test Stats:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (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 : 19.793 MB/s
Sequential Write : 9.811 MB/s
Random Read 512KB : 19.460 MB/s
Random Write 512KB : 0.855 MB/s
Random Read 4KB (QD=1) : 3.468 MB/s [ 846.7 IOPS]
Random Write 4KB (QD=1) : 0.008 MB/s [ 2.0 IOPS]
Random Read 4KB (QD=32) : 4.044 MB/s [ 987.3 IOPS]
Random Write 4KB (QD=32) : 0.008 MB/s [ 2.0 IOPS]

Test : 4000 MB [L: 0.0% (0.0/29.8 GB)] (x1)
Date : 2012/04/24 16:31:50
OS : Windows 7 Ultimate Edition [6.1 Build 7600] (x86)

General Performance Experience Review: Although the benchmarks for random read and write were horrible, when I stared running apps such as 3D games, the speed of the loading was much faster. What would usually take a minute to load would now only take 20 seconds. On average, I'm getting faster loading times with games raging from twice as fast to six times as fast. So yeah, higher class cards load large games and stuff faster. The speed of using EverNote and opening the notes were the same, everything else was either normal, or slightly faster (the apps that run off the SD card).

Loaded Games include:
Dungeon Hunter 2 (6x)
Modern Combat 3 (but during actual gameplay, it lags) (6x)
MineCraft: Pocket Edition (4x)
Angry Birds Space (4x)
Assasin's Creed HD (4x)
Cytus (6x)
Dead Space (4x)
CS Portable (6x)


So TL;DR: This Class 10 card is working fine for me in terms of actual experience.

Compared to the below 32GB SanDisk Class 4 card, this Patriot card is better for reading and writing, not so much for Random Reading and Writing (It sucks).

Quote:
32GB Class 4 Sandisk.

Tested results when I received it today and thought I would post the results in case anyone else is considering purchasing from the same source.

-----------------------------------------------------------------------
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 : 20.071 MB/s
Sequential Write : 6.088 MB/s
Random Read 512KB : 19.716 MB/s
Random Write 512KB : 0.625 MB/s
Random Read 4KB (QD=1) : 3.234 MB/s [ 789.5 IOPS]
Random Write 4KB (QD=1) : 1.467 MB/s [ 358.2 IOPS]
Random Read 4KB (QD=32) : 3.164 MB/s [ 772.4 IOPS]
Random Write 4KB (QD=32) : 0.150 MB/s [ 36.5 IOPS]

Test : 1000 MB [E: 1.9% (0.6/29.7 GB)] (x5)
Date : 2011/06/27 19:34:44
OS : Windows 7 Home Premium Edition SP1 [6.1 Build 7601] (x64)

29.71gb Capacity

SD Tools results:

writing speed 6.2mb/s
reading speed 21.7mb/s

More testing of sandisk 32gb class 4 card

http://forum.xda-developers.com/show...5&postcount=65
from user freeze888

http://forum.xda-developers.com/show...php?p=15269669
from user Shudushi

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32gb, class10, microsd, sandisk
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