04-30-2014 06:14 AM
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  1. Ichigo's Avatar
    would the size (4GB) as anything to do with write speed?
    04-18-2014 10:57 AM
  2. Michael Adaniya's Avatar
    No, just capacity. And the more I am looking at specs for other SanDisk and non-SanDisk cards, the more I am getting confused lol. The class of the card designates the write speed. class 2 = minimum of 2mb/s write speed, class 4 = minimum 4mb/s write speed, etc.... This leads me to believe the one I just tested should not have even been able to write fast enough for a 1080p 30fps video (wtf is going on?)

    Then there is stuff like UHS-1... Uggg
    https://www.sdcard.org/developers/overview/speed_class This helped understand a slight amount more haha.

    So what I'll do is test out the Ultra 'class 10' 64gb that I ordered and give you my results, because I am done trying to figure it all out LOL!
    Ichigo likes this.
    04-18-2014 11:54 AM
  3. Ichigo's Avatar
    thanks a bunch! I'll looking forward to see the result. Thanks man.
    04-18-2014 01:08 PM
  4. Michael Adaniya's Avatar
    Got the card. Moved a majority of apps and all my games onto it. Just took some tests. Everything worked fine.

    I even pulled the video files off of the cards and moved them to the computer to check their properties.

    video-properties.png

    All done in 1080 w/ just about 30fps
    Going clockwise from top-left
    1. Test on SanDisk 'class 2' SD HC 4gb
    2. Older video done straight to the phones memory
    3 & 4. Both done with new SanDisk 'class 10' Ultra SD XC 64gb with 30MB/s transfer rate Here it is on Amazon

    As you can see I don't see any differences in their properties. And when I view each of the files on my 1080p monitor They all look beautiful and have no distinguishable differences.

    So all in all I am stumped, but and am happy with the 64gig one I just got... and for $38.00 it seems like a steal
    04-18-2014 01:28 PM
  5. Ichigo's Avatar
    Micheal,

    Both of cards RECORDED smoothly without any stuttering? The playback and data transfer to computer have never been an issue. The problem is always the recording part, you might want to test the zooming and recording fast moving object in the dark (I know I am asking the ridiculous thing). I figured that if we can do that and it would help many others that are in the market of buying SD card.

    Thanks a lot for doing this. Appreciate your time very much..
    04-18-2014 01:43 PM
  6. Michael Adaniya's Avatar
    Haha... no problem.

    So, zoomed in and fast moving objects in dark are good.. don't see any stuttering. I had both my daughters run like crazy between lit and dark rooms... nothing that looked lagged, even moving camera back and forth, up and down quickly was very responsive, no delay.

    I hope this helps
    Ichigo likes this.
    04-18-2014 02:34 PM
  7. Ichigo's Avatar
    ok.. I am going to order the same one from amazon.

    [INFO]HERE IS THE LINK: Amazon.com: SanDisk Ultra 64 GB microSDXC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQU-064G-AFFP-A: Electronics[/INFO]

    I hope this could help others as well. thanks a bunch! you are awesome!!!!!
    04-18-2014 03:07 PM
  8. o4komodo's Avatar
    would the size (4GB) as anything to do with write speed?
    Actually, sometimes (or in most cases) a card with less storage space will actually have faster read/write speeds.
    It's often why you'll see say a 128gb SSD generally having faster write speeds than a 256gb SSD.
    Ichigo likes this.
    04-18-2014 05:36 PM
  9. multo's Avatar
    Thanks to this thread and sd card app I learned that my Adata class 10 is just giving 3.4Mbps write speed. Time to do some complaining I guess

    Sent from my Lumia 1520 using Tapatalk
    04-19-2014 04:33 AM
  10. o4komodo's Avatar
    Thanks to this thread and sd card app I learned that my Adata class 10 is just giving 3.4Mbps write speed. Time to do some complaining I guess

    Sent from my Lumia 1520 using Tapatalk
    check to see if the card is formatted to EXFAT. If it's formatted to FAT32 then that could contribute to the slower write speeds.
    azcruz and multo like this.
    04-19-2014 04:46 AM
  11. multo's Avatar
    check to see if the card is formatted to EXFAT. If it's formatted to FAT32 then that could contribute to the slower write speeds.



    lemme do that first then before making calls to cs





    Sent from my Lumia 1520 using Tapatalk
    04-19-2014 08:01 AM
  12. Akash Patel's Avatar
    check to see if the card is formatted to EXFAT. If it's formatted to FAT32 then that could contribute to the slower write speeds.
    I dont think it is true as
    I just got my sandisk ultra 32gb uhs1 write speed is 14.41Mbs and its format is fat32 so i dont think format might be the issue.
    04-19-2014 09:00 AM
  13. Etios's Avatar
    Class 6 or class 10 doesn't guarantee good performance, for app installs the phone needs good random read speeds which varies a lot amongst different cards of even class 6 and class 10, just same case as windows phone 7 micro sd card thingy. A good card which i remember is Sandisk class 4 16gb for random read speeds better than sandisk class 10.

    Yes, for recording and data transfers, the write speed matters but i am talking about general App performance which are installed on microSD cards.
    04-19-2014 09:14 AM
  14. Microsoftjunkie's Avatar
    I bought a 16gb PNY micro SD. It's Class 10 U1. 40mb/s write speeds. For 15 bucks at best buy. Best price and performance of any card. If you can live with the small storage. Their 32gb at BB is similar is balance.
    04-19-2014 09:18 AM
  15. o4komodo's Avatar
    I dont think it is true as
    I just got my sandisk ultra 32gb uhs1 write speed is 14.41Mbs and its format is fat32 so i dont think format might be the issue.
    Well, EXFAT was apparently created for SDHC and SDXC cards with high storage space. Sometimes FAT32 format will make a 32+GB card read less than it should or even write/read slower as well. But it's good that the FAT32 works!
    04-19-2014 01:38 PM
  16. o4komodo's Avatar
    I bought a 16gb PNY micro SD. It's Class 10 U1. 40mb/s write speeds. For 15 bucks at best buy. Best price and performance of any card. If you can live with the small storage. Their 32gb at BB is similar is balance.
    Damn that's fast... but what are the actual read speeds from the phone? I wonder if their 32gb is just as fast.
    Ichigo likes this.
    04-19-2014 01:38 PM
  17. NSX38's Avatar
    I'll tag onto this thread since my thread here: http://forums.windowscentral.com/nok...o-sd-card.html didn't get any responses to my questions? So if anybody on this thread can read mine and give me some feedback on what I was curious about that would be awesome!!

    Thx
    04-19-2014 01:53 PM
  18. o4komodo's Avatar
    Taken from the other thread. Thought it was worth mentioning here too:
    I just recorded nearly 40gb worth of Armin Van Buuren's "Armin Only Intense". All footage shot at 720p/30fps for maximum zoom. There was no delay this time around... recorded straight to my Adata 64gb Class 10/UHS-1. It wrote the files pretty quickly as I was able to record video and immediately switch to taking photos. Playback was perfect. Having owned the L920 I'm very satisfied with the camera on this! Sounds even better due to the extra mic and recording to the SD card [this time around] provided no delays for a seamless experience (at open zoom, partial zoom and full zoom). I recorded between 1 minute all the way to 12 minute of footage.

    SO, maybe you might not have any issues recording depending on the scenario. [I also wiped all my music prior to the event... which might have helped with the seamless recording]
    04-20-2014 05:59 AM
  19. Ichigo's Avatar
    I bought the 32GB sandisk ultra plus from amazon.

    I will report back after I got it (supposed to be tomorrow). fingers crossed and see if it gives me any trouble. Hopefully not.
    04-21-2014 01:50 PM
  20. SAM 77's Avatar
    Recieved my Sandisk Extreme 16GB class 10 UHS-I

    Installation- formatting no issues
    Transferring apps and games to SD card no issues.
    Quick transfer with up to 60 apps and games moved over in less than 10 mins maybe 5.
    Was quick enough I did not have to look at time.

    Recorded 1080p vid and playback. Zoom in and out moving flock of birds no lag.

    Extremely happy. Windows Phone 8.1 rockin pretty good here with Sandisk Extreme


    15GB free overall and I cant use it all
    lol
    Last edited by SAM 77; 04-22-2014 at 02:12 AM.
    oditius and Ichigo like this.
    04-22-2014 01:53 AM
  21. Ian Hanson's Avatar
    So yea, I completely forgot that I threw an old SanDisk 'class 2' 4gb SDHC in when i first got my 1520. Haven't taken video in a while, but just took a test in 1080p 30fps. It looks perfect, no lag, nothing that indicates poor performance... Unless I am missing something. I zoomed in fully moved from dark to lit rooms with no delay. Any other tests I should try that would prove bad performance? Because if this card performs as well as it does then I have no worries about the SanDisk Ultra 'class 10' 64gb SDXC
    Attachment 63514
    Did you have a lot of audio going during the video or was it silent? I'd think that would affect the overall bit rate of the video; a lot of the skipping and stuttering I've seen in the forums was with the audio, not the video.
    04-22-2014 05:10 AM
  22. techygeek82's Avatar
    I actually have not been extremely pleased with the Write speeds on the SanDisk 'Ultra' line of cards. They are formatted to EXFAT and I am only seeing it max out at 10MB/s on my Surface Pro. I was watching the file transfer rate when I moved a video to the card.It also 'felt' like performance in the 1520, when moving apps to SD, took more time than it should. I'm not using any performance tools to measure this. Just instinct. I have also noticed in Twitter, for example, not all user avatars load right away. I'm guessing that's due to the write speed.I had the 128GB Sandisk Ultra card on order from Amazon but cancelled it. Instead I went ahead and ordered the 64GB Extreme Plus card. I should get it later today and intend on testing performance. If it doesn't 'feel' like it's performing better, then I'll send it back. At the end of the day, I'd rather have an SD card perform well over the total amount of storage.Extreme Plus cards are rated to read UP TO 80MB/s write UP TO 50MB/s. I shall see...
    04-22-2014 08:39 AM
  23. Ichigo's Avatar
    I tend to agree with techkygeek82. I think I will be fine with an extra 16GB, but went ahead getting 32GB just in case. I would give a test myself after I load the card up 75-80% full and see if it stuttered taking night time video with a lot of noise. Will report back.
    04-22-2014 11:21 AM
  24. o4komodo's Avatar
    I tend to agree with techkygeek82. I think I will be fine with an extra 16GB, but went ahead getting 32GB just in case. I would give a test myself after I load the card up 75-80% full and see if it stuttered taking night time video with a lot of noise. Will report back.
    While I was recording on my Adata 64gb all was fine [minus one video that got corrupt footage]. But maybe 2 or 3 videos [out of 40 something/30gb worth] had a mini-stutter in audio.
    04-22-2014 12:18 PM
  25. techygeek82's Avatar
    So having placed the SD card in to the 1520, I can certainly tell the difference. Testing the same video on the Surface Pro yielded 40 - 45MB/s transfer rates. It also just feels noticeably faster during the transferring of apps to the SD card in the 1520.

    I'll test videos and photos tomorrow, but am pleased so far with the Extreme Plus card.
    04-22-2014 09:03 PM
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