01-09-2015 07:24 AM
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  1. JaiMento's Avatar
    Honestly, this does not make any sense in my mind :) ... you might just have a bad 64 Gb microSD card ... in a case of memory, faster is always better, but it does not give you any advantage to use class 10 card if class 6 is enough ...

    I have Sandisk Ultra class 10 card (u-1). It works, but I think that Sandisk extreme Plus would be better (read: 80 Mb. and write: 50 Mb) .... and a main reason for that is writing (saving) photos and videos. The both are fast enough to read ....
    Do you get stuttering with your SanDisk Ultra when recording 1080p/30fps video also?
    02-15-2014 12:50 PM
  2. Jarip's Avatar
    Do you get stuttering with your SanDisk Ultra when recording 1080p/30fps video also?
    Yeah, I do ... and also saving of pics is slow ...
    02-15-2014 01:04 PM
  3. JaiMento's Avatar
    Yeah, I do ... and also saving of pics is slow ...
    It's unfortunate, really. At first glance, the SanDisk Ultra would appear to be fast enough. However, it seems everyone is experiencing speed issues with it. Maybe it's a problem with the combination of the SanDisk Ultra and a L1520. Too bad I don't have another device that can accept MicroSD cards that can record 1080p/30fps to test video recording performance with.
    fernie54 likes this.
    02-15-2014 01:33 PM
  4. boo516's Avatar
    Honestly, this does not make any sense in my mind :) ... you might just have a bad 64 Gb microSD card ... in a case of memory, faster is always better, but it does not give you any advantage to use class 10 card if class 6 is enough ...

    I have Sandisk Ultra class 10 card (u-1). It works, but I think that Sandisk extreme Plus would be better (read: 80 Mb. and write: 50 Mb) .... and a main reason for that is writing (saving) photos and videos. The both are fast enough to read ....
    It doesn't make sense to me but I'm using the same 1520 with and error on the SDXC 64gb with a 32GB class 6 and I have no issues so I don't know either :p
    02-15-2014 03:46 PM
  5. Jarip's Avatar
    It doesn't make sense to me but I'm using the same 1520 with and error on the SDXC 64gb with a 32GB class 6 and I have no issues so I don't know either :p
    It might do something with a size of microSD (FAT32 limit is 32 Gb and max. file size 4 Gb) .... well, 64 Gb has not that limit (maybe exFAT) ... well, lazy to find it out ....

    Anyway, here is some info - FAT32 vs exFAT: exFAT vs. FAT32 Comparison
    02-16-2014 01:25 AM
  6. Citizen X's Avatar
    In that case, it is because the Sandisk card sucks and have other issues and not because it is too slow for video while it works for pictures. Shooting video has a lower write speed requirement than taking still pictures, particularly if you shoot high res photos and use the RAW support in the camera. 10 Mbytes per second should cover any requirements you might have for video even if shooting 1080p. I just recorded a short clip on my Samsung card and it looked fine to me, including when I was turning around much faster than would be reasonable in a real video. Some further reading:

    Does your camera need a fast SD card? | Features | PC Pro
    You are wrong. And the article you linked to is utter garbage. One of the biggest constraints for digital video is the write speeds of SD cards. That article's analysis totally ignores video bitrate and assumes heavy use of GOP (group of pictures). You also have no idea how large the 1520's buffer is. Most people don't take a bunch of pictures rapid fire with smartphones. So even though the full resolution pictures along with DNG files is a lot of data if you have a decent size buffer you can write to even slow SD cards in the background and the camera is ready for the next shot. The problem with video is you are literally taking a picture 30 times a second every second. So the pictures may be small but there are a ton of them.

    For those interested in a card that will definitely work...


    Best Buy has the SanDisk Extreme 64 GB card for $79.99. This is the 80MB/s 50 MB/s card. This card is future proof and if Microsoft starts allowing apps to be stored on the SD card this will ensure they launch as fast as possible.
    02-16-2014 12:35 PM
  7. Evan_ISS's Avatar

    For those interested in a card that will definitely work...


    Best Buy has the SanDisk Extreme 64 GB card for $79.99. This is the 80MB/s 50 MB/s card. This card is future proof and if Microsoft starts allowing apps to be stored on the SD card this will ensure they launch as fast as possible.
    Isn't this a 45/45 one? SanDisk Extreme microSDHC and microSDXC UHS-I Memory Cards
    02-17-2014 07:59 AM
  8. irvin792's Avatar
    I think he meant extreme plus
    02-17-2014 11:36 AM
  9. Citizen X's Avatar
    It's sold out at Best Buy. Adoroma has the Sandisk 80/50 card for $79.99 with free super saver shipping. The Best Buy link in my original post pointed to a card with 80MB/s read speed. Sandisk has been screwy about the naming of their Extreme and Extreme Plus cards. The only way to really know is to look at the specs and the model number. Or find the product via the Sandisk website.
    02-17-2014 12:50 PM
  10. lapirk's Avatar
    hi guys. first post here. recently acquired a 1520 and loving it to bits.
    now i use a sandisk 64gb microsdxc and just yesterday i updated the phone os to a latest version. 8.0.10521.155.
    once the update was done and the phone restarted is showed the msg "there is a problem with the sd card, please fix it on pc".
    so once its in the pc i see that all the music video files which i have on there is fine but the camera roll folder is inaccessible. removed it and inserted it again and i scanned and fixed it and now the folder is accessible but tons of photos and videos shot with the phone are all gone. can anyone tell me how i couldve avoided this and prevent such things in the future? i have no clue about sd card formatting so anyone could point me in the right direction would really appreciate it. thanks
    02-18-2014 12:54 AM
  11. rocwest's Avatar
    It's sold out at Best Buy. Adoroma has the Sandisk 80/50 card for $79.99 with free super saver shipping. The Best Buy link in my original post pointed to a card with 80MB/s read speed. Sandisk has been screwy about the naming of their Extreme and Extreme Plus cards. The only way to really know is to look at the specs and the model number. Or find the product via the Sandisk website.
    I bought the Extreme Pro from Adorama for $98. A few days later it was sold out everywhere. Before purchasing I called Sandisk. The rep told me that the Pro was a 95/90 card...she said "guaranteed" but I think maybe she meant to say "up to." She mentioned to look for "Pro" on the card and not the packaging, and Adorama's stock of Pros at the time actually were Pros as my card said "Extreme Pro.". She did go on to say the Plus was "up to" 80/50, and I take it that she hinted to get the Pro while they were still out there.
    02-18-2014 10:01 PM
  12. Citizen X's Avatar
    I bought the Extreme Pro from Adorama for $98. A few days later it was sold out everywhere. Before purchasing I called Sandisk. The rep told me that the Pro was a 95/90 card...she said "guaranteed" but I think maybe she meant to say "up to." She mentioned to look for "Pro" on the card and not the packaging, and Adorama's stock of Pros at the time actually were Pros as my card said "Extreme Pro.". She did go on to say the Plus was "up to" 80/50, and I take it that she hinted to get the Pro while they were still out there.
    As per the Sandisk website the Extreme Pro cards only go up to 16 GB capacity. No 64 GB cards are available. Can you confirm you got a 64 GB card?

    I doubt any phones on the market make full use of the 80/50s read/write speeds. Maybe the read speed. You can find a chart of Canon DSLR write speeds HERE. As you can see from the chart the fastest SD recording speed on any camera up to and including the 5D MK III is 40MB/s.



    Can anyone confirm the read/write speeds for any modern smartphone?

    I got the Extreme Plus card to do a bit of future proofing. But honestly I'm not willing to spend more than $80 total because by the time I have a phone that takes advantages of speeds in excess of 50MB/s the prices of faster cards will have come down. I don't know what speeds the 1520 is capable of. I am just assuming it's speed is in the neighborhood of Canon DSLRs... at most.
    02-19-2014 08:08 AM
  13. rocwest's Avatar
    As per the Sandisk website the Extreme Pro cards only go up to 16 GB capacity. No 64 GB cards are available. Can you confirm you got a 64 GB card?
    Yes, mine's a 64GB Extreme Pro. One reason I bought it was to (as best possible) eliminate the chances of issues with "one-time-opportunity" video capture. It could be anything, kids, travel, whateverit just seemed to be awfully cheap insurance in that regard. Second, in case of a warranty issue, one would always be guaranteed of receiving the fastest Sandisk replacement card extantit's reasonable to assume the Plus' quoted 80/50 will be surpassed in a new "professional" line. My guess is that the reliable yield of 64GB cards that tested to the 95/90 Pro spec was low

    FWIW I am using the Sandisk Ultra 64GB cards in two dash cams shooting video at 1080P/30fps. They've been performing flawlessly, absolutely no stuttering.
    02-19-2014 02:22 PM
  14. Citizen X's Avatar
    Yes, mine's a 64GB Extreme Pro.
    Cool. Thanks for clarifying. By the time I started looking for a card the 64 GB Extreme Pro was not available. I got the Extreme Plus for future proofing purposes. I doubt the 1520 is capable of maxing it out. But I hear you on the insurance angle. I would hate to miss a shot just because my card is slow.
    02-19-2014 04:09 PM
  15. Jarip's Avatar
    Here is WRITE speed of Sandisk Ultra 64 Gb, tested by Hardware Test 3.0: 16,52 Mb :P
    Attached Thumbnails wp_ss_20140223_0001-1-.png  
    Last edited by Jarip; 02-24-2014 at 02:45 AM.
    02-23-2014 09:22 AM
  16. mozman68's Avatar
    I've been using the 32gb SanDisk Ultra for about amonth now without any issues...it's like it isn't even there.
    oditius likes this.
    02-23-2014 09:36 AM
  17. Jarip's Avatar
    I've been using the 32gb SanDisk Ultra for about amonth now without any issues...it's like it isn't even there.
    Yeah, I think that a problem has something to do with a size of microSD card - maybe a file system of 32 Gb microSD cards is FAT32, some works well and 64 Gb microSD cards are using exFAT file system (with support for over 32 Gb size and files over 4 Gb), some has a problem ... it might need just an update for OS ... or a faster microSD card :)
    02-23-2014 09:43 AM
  18. Citizen X's Avatar
    Here is read speed of Sandisk Ultra 64 Gb, tested by Hardware Test 3.0: 16,52 Mb :P

    Those results can't be even remotely accurate.
    02-23-2014 10:15 AM
  19. Sam_oslo's Avatar
    SanDisk has just announced a new 128GB Ultra microSDXC UHS-I memory card. This should work in all devices with support for SDXC, including the 1520, theoretically.

    SanDisk ups microSD capacity to 128GB with new card

    It will probably saturate the bus-speed of 1520, but that's an "Ultra", so it will be interesting to see how it performs on 1520.
    Jarip and latempete like this.
    02-25-2014 03:09 PM
  20. Hamboza's Avatar
    I have the same 64GB Sandisk Ultra and was using it on a samsung galaxy note 8.0, and got me a new 1520 yesterday, but it doesn't seem to read it. It's grayed out in the phone storage options. should it be in a specific format? or any suggestions?
    03-13-2014 02:24 AM
  21. MoggSquad's Avatar
    Is there another app beside "hardware test" to benchmark my sd card on my phone. I have the 64gb sandisk extreme plus (advertises up to 50/80) and it's showing me as having 10MB write speeds which is absurd.
    03-13-2014 04:13 PM
  22. cariocap's Avatar
    Just a note about FAT32 and exFAT case you don't know.

    When you format the SD card using the phone it formats using FAT32 and then you have the limit of files < 4GB.
    If you want to write files > 4GB you have to format the SD card using your windows computer and format using exFAT and then insert the SD into the phone.
    03-13-2014 06:53 PM
  23. khairularifkhelmi's Avatar
    Hello guys. I'm planning to get a Sandisk Extreme PRO 16GB microSD for my Lumia 1520. Any known issues or comments?
    08-21-2014 09:00 PM
  24. HoosierDaddy's Avatar
    Hello guys. I'm planning to get a Sandisk Extreme PRO 16GB microSD for my Lumia 1520. Any known issues or comments?
    Only comment is to make sure don't buy too small and have to buy a bigger one later.
    08-22-2014 11:31 AM
  25. Nimdock's Avatar
    I went with the Samsung Electronics 64GB PRO Micro SDXC.

    So far, so good.
    08-22-2014 12:21 PM
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