Guest foxmeister Posted May 20, 2010 Report Share Posted May 20, 2010 And is it a matter of luck with the card, or is it just buying a good brand? I've heard tale that Sandisk "class" their cards very conservatively and that that almost always faster than their class would suggest. This is definitely borne out in my experience, and in independent reviews that I've read. Regards, Dave Link to comment Share on other sites More sharing options...
Guest Shofar1 Posted May 20, 2010 Report Share Posted May 20, 2010 out off topic. where can i buy sd card class 6 ,16GB with shipping to israel, and i'm not talking about ebay, there are to many fake cards! greetz :rolleyes: Amazon.com (USA) has San Disk 16 MB for a little over $30 + shipping. Shofar1 Link to comment Share on other sites More sharing options...
Guest peterx666 Posted May 20, 2010 Report Share Posted May 20, 2010 I use A2SD+ with a 16GB Class 2 SanDisk card and have no issues at all I used the same card and the phone trashed it (it just stopped reading) Link to comment Share on other sites More sharing options...
Guest scotch whisky Posted May 20, 2010 Report Share Posted May 20, 2010 All microSD cards are manufactured in the same way but because of manufacturing tolerances some will be faster than others. Let us say that 90% of cards are fast enough to be labeled class 6 but the manufacturer has 90% orders for class 2 cards. It follows that he will label 90% as class 2 even though most will be faster. The same happens with microprocessors. There is a very good chance that most recent class 2 cards from a top manufacturer are much faster than their markings. Link to comment Share on other sites More sharing options...
Guest skinnypupp Posted May 25, 2010 Report Share Posted May 25, 2010 I just ran some benchmarks using the SD Card Speed Tester app: Kingmax Class 6 4GB (cheapest class 6 I could find) Write: 7 MB/s Read: 14 MB/s Samsung Class 2 4GB (came with the phone) Write: 2 MB/s Read: 11 MB/s So it IS better to have a cheap class 6 over a 'normal' Class 2. Link to comment Share on other sites More sharing options...
Guest teunke99 Posted May 28, 2010 Report Share Posted May 28, 2010 Class 6 has a higher *minimum guaranteed" data transfer rate, and that is only that it has a sustained write speed of 6mb/s or better. My 16gb Sandisk Class 2 has a sustained write speed of 7.5mb/s (i.e. higher than the class 6 minimum) and the sustained read speed is over 20mb/s - which is also slightly faster than my 8gb Transcend Class 6 card (write speed around 14mb/s). The point is that the class of the card does not actually tell you how fast it is - it just tells you how slow it isn't! :( Whilst my Class 6 card writes at almost twice the speed of my Class 2 card (14mb/s vs 7.5 mb/s), the most important operation is reading (even with Apps2SD since you only write the APK once!), and both cards read at over 20mb/s. The write speed tends to be more important for digital cameras/video cameras where a guaranteed minimum speed is required for writing. Regards, Dave Hi Dave, your talking about speeds. Can you tell me how you've measured them? which software (for windows). I got a 16 gb card from Integral for my birthday and want to make sure it's fast enough.... thx Danny Link to comment Share on other sites More sharing options...
Guest killerost Posted May 28, 2010 Report Share Posted May 28, 2010 I just ran some benchmarks using the SD Card Speed Tester app: Kingmax Class 6 4GB (cheapest class 6 I could find) Write: 7 MB/s Read: 14 MB/s Samsung Class 2 4GB (came with the phone) Write: 2 MB/s Read: 11 MB/s So it IS better to have a cheap class 6 over a 'normal' Class 2. I'm not sure I trust that program, yesterday it measured my Kingston 16 gb class 2 card to be a class 4 card, write: 4MB sec, read 11MB sec. The first time I ran the test today, it measured the card to a class 2 card,write: 3MB sec, read 11 MB sec. Then I ran the test again, this time it measured my card to a class 6 card with write: 6MB sec and read 11MB sec. What I needed was a second opionion, I tried the program Flash Memory Toolkit with the card in a microSDHC usb adapter. It measured my card with several different file sizes from 1 to 5MB, the write speed ranged from 1117KB/sec to 3553KB/sec (about a "class 3.5 card"), and the read speed from 16677 KB/sec to 18931KB/sec. Ok, could this be correct? The I tried the sdhc card from my camera, a Lexar Professional SDHC 4GB 133x Memory Card. The program measured it to write speed from 12917KB/sec to 18563KB/sec. Wow. A "class 18" card?). It seemed to fast. So I did a final benchmark with SiSoft Sandra, and it seemed the two programs agreed. The conclusion about SD Card Speed Test is that it CAN give a correct score, but it seems it can also give wrong score. :( And to you who claim that "MY class 2 card is FASTER than a class 6 card", how did you measure it? By starting your phone and counting seconds, and the running some apps with a2sd installed? Or have you really measured it? Link to comment Share on other sites More sharing options...
Guest spiritde Posted May 28, 2010 Report Share Posted May 28, 2010 SD Card Speed Test is very unreliable. In my case it would randomly pause on a percentage for a short time, and on other occasions rush 10% in the blink of an eye. That maybe related to a2sd+ and/or other programs accessing the SD in background while it's snuggled into the desire. So you probably have to run a lot of iterations before you actually get a plausible result, if ever. It might help to use a task killer though. Results varied between 1 to 8 MB write speed and 7 to 12 MB read speed in my case. Haven't tested speeds in a card reader yet, but the phone feels quite responsive without any lags anyhow. Link to comment Share on other sites More sharing options...
Guest teunke99 Posted May 29, 2010 Report Share Posted May 29, 2010 This is a Transcend class 2 8 GB card vs an Integral class 2 16gb card. Test with Flash Memory Toolkit. Reading speeds are overall high enough (seems to me) but Integral comes out better. Writing speeds with the Transcend card are stable, but from 2mb filesize the integral card comes out better.' However the lower write speed with the smaller files bugs me. I think the phone will write small files most of the times, or not? What do you guys think? thx Danny Link to comment Share on other sites More sharing options...
Guest 325i Posted May 29, 2010 Report Share Posted May 29, 2010 I have bought a cheap 16gb card. I have done a speed test on it and on the original sandisk 4gb card. The results were almost identical to each other, the write speed was very slightly higher for the sandisk. As i have found the standard SD very good and reliable, i wil now switch to the new 16gb. Link to comment Share on other sites More sharing options...
Guest KroFF Posted May 31, 2010 Report Share Posted May 31, 2010 i just bought a kingston 16gb class 10 :( the gallery seems more responsive, will have to try some video, hopefully will help with hd recording :( Link to comment Share on other sites More sharing options...
Guest jdouce Posted May 31, 2010 Report Share Posted May 31, 2010 (edited) Check This Class 2 SanDisk 16gb don't pay for class 6 just but a good brand also using as2d+ will vastly REDUCE your read/write speed as system is using half to read/write to the ext partition Edited May 31, 2010 by jdouce Link to comment Share on other sites More sharing options...
Guest Abra Cadabra Posted May 31, 2010 Report Share Posted May 31, 2010 I benchmarked the microSDs as well as one standard SD that I had with me (I'm using the 16GB Kingston Class10 at the moment on my Desire). Note how the Class 4 Sandisk is faster than the Class 10 Kingston. Apparently Brand does matter. All tests performed using Crystal DiskMark 3.0 x64 Results below: MicroSD - 4GB Class 2 - Samsung (Bundled with HTC Desire) ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [sATA/300 = 300,000,000 byte/s] Sequential Read : 14.880 MB/s Sequential Write : 5.159 MB/s Random Read 512KB : 14.483 MB/s Random Write 512KB : 0.754 MB/s Random Read 4KB (QD=1) : 2.758 MB/s [ 673.2 IOPS] Random Write 4KB (QD=1) : 0.026 MB/s [ 6.2 IOPS] Random Read 4KB (QD=32) : 2.767 MB/s [ 675.5 IOPS] Random Write 4KB (QD=32) : 0.025 MB/s [ 6.1 IOPS] Test : 100 MB [E: 2.9% (107.8/3751.0 MB)] (x3) Date : 2010/05/18 21:56:26 OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64) MicroSD - 16GB Class 10 - Kingston ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [sATA/300 = 300,000,000 byte/s] Sequential Read : 19.300 MB/s Sequential Write : 11.116 MB/s Random Read 512KB : 19.068 MB/s Random Write 512KB : 1.457 MB/s Random Read 4KB (QD=1) : 3.170 MB/s [ 773.8 IOPS] Random Write 4KB (QD=1) : 0.013 MB/s [ 3.1 IOPS] Random Read 4KB (QD=32) : 3.112 MB/s [ 759.9 IOPS] Random Write 4KB (QD=32) : 0.024 MB/s [ 6.0 IOPS] Test : 100 MB [E: 0.0% (0.0/15.1 GB)] (x3) Date : 2010/05/16 21:44:29 OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64) MicroSD - 8GB Class 4 - SanDisk ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [sATA/300 = 300,000,000 byte/s] Sequential Read : 19.762 MB/s Sequential Write : 12.912 MB/s Random Read 512KB : 19.533 MB/s Random Write 512KB : 3.389 MB/s Random Read 4KB (QD=1) : 4.498 MB/s [ 1098.2 IOPS] Random Write 4KB (QD=1) : 0.037 MB/s [ 8.9 IOPS] Random Read 4KB (QD=32) : 4.536 MB/s [ 1107.5 IOPS] Random Write 4KB (QD=32) : 0.039 MB/s [ 9.6 IOPS] Test : 100 MB [E: 81.5% (6334.7/7771.3 MB)] (x3) Date : 2010/05/16 22:28:45 OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64) SD Card - 16GB Class 4 - Sandisk ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [sATA/300 = 300,000,000 byte/s] Sequential Read : 17.621 MB/s Sequential Write : 17.160 MB/s Random Read 512KB : 16.921 MB/s Random Write 512KB : 2.558 MB/s Random Read 4KB (QD=1) : 3.943 MB/s [ 962.6 IOPS] Random Write 4KB (QD=1) : 0.025 MB/s [ 6.1 IOPS] Random Read 4KB (QD=32) : 4.002 MB/s [ 977.1 IOPS] Random Write 4KB (QD=32) : 0.025 MB/s [ 6.1 IOPS] Test : 1000 MB [E: 0.0% (0.0/15.2 GB)] (x5) Date : 2010/05/16 21:16:58 OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64) Link to comment Share on other sites More sharing options...
Guest stevebrush Posted June 6, 2010 Report Share Posted June 6, 2010 Hi everybody, here are my tests : Stock 4GB sandisk class 2 (sell with my desire) Sequential Read : 8.378 MB/s Sequential Write : 3.094 MB/s Random Read 512KB : 7.949 MB/s Random Write 512KB : 1.118 MB/s Random Read 4KB (QD=1) : 0.796 MB/s [ 194.3 IOPS] Random Write 4KB (QD=1) : 0.204 MB/s [ 49.9 IOPS] Random Read 4KB (QD=32) : 0.482 MB/s [ 117.7 IOPS] Random Write 4KB (QD=32) : 0.167 MB/s [ 40.8 IOPS] --------------------------------------------------------------------- 16GB Transcend class 6 Sequential Read : 12.194 MB/s Sequential Write : 7.371 MB/s Random Read 512KB : 11.978 MB/s Random Write 512KB : 1.726 MB/s Random Read 4KB (QD=1) : 2.024 MB/s [ 494.2 IOPS] Random Write 4KB (QD=1) : 0.023 MB/s [ 5.6 IOPS] Random Read 4KB (QD=32) : 2.082 MB/s [ 508.2 IOPS] Random Write 4KB (QD=32) : 0.027 MB/s [ 6.5 IOPS] Link to comment Share on other sites More sharing options...
Guest Benfeelme Posted June 25, 2010 Report Share Posted June 25, 2010 Hi guys, how is Sandisk class 10 speed as compared with class 6? Does it make a huge improvement in speed? Link to comment Share on other sites More sharing options...
Guest Kevin La. Posted June 25, 2010 Report Share Posted June 25, 2010 Mine is a class 4 from Kingston and it very fast (I'm using A2SD). Link to comment Share on other sites More sharing options...
Guest spammyspam Posted June 25, 2010 Report Share Posted June 25, 2010 Class 2 Sandisk running A2SD+ and not seen an FC yet, but I already had this card lying around so. Link to comment Share on other sites More sharing options...
Guest hensk Posted June 25, 2010 Report Share Posted June 25, 2010 OK I was read all of your sugestion I will buy 8Gb clas 6 10ks Link to comment Share on other sites More sharing options...
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