Different classes of SD cards

Discussion in 'Droid RAZR M' started by pdaniel219, Dec 14, 2012.

  1. pdaniel219

    pdaniel219 Member

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    I've read a little about different classes of SD cards. 2, 4, 6, 10. . . My question is, does it really matter? Will a lower class card fail? I've got a class 4 8g card right now. Didn't pay ANY attention to the class when I bought it. I'm gonna grab a 16g, but I'm not sure if I should pay extra for a higher class. I've heard both opinions, that the higher class is worth it and that it didn't really matter unless you're storing videos on it.
     
  2. jntdroid

    jntdroid Super Moderator
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    I've had really bad luck with Class 10's in my recent Moto devices (Razr M / Razr Maxx HD). Could've just been the brand... I don't believe the phones are capable of writing at those speeds anyway. It might be faster when it's plugged directly into your computer, but as far as the phone's functionality, I think Class 4 should be fine.
     
  3. diablo81588

    diablo81588 Member

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    Do not buy a class 4 card. That's what comes with phones and they're very slow. I would recommend a class 6 or higher. You can get class 10s on amazon gold box deals occasionally for very cheap. Never had problems with class 10 cards. I would stay away from generic brands and stick to known like Sandisk, PNY, and patriot.

    Sent from my DROID BIONIC using Tapatalk 2
     
  4. pdaniel219

    pdaniel219 Member

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    Awesome! Thanks guys! I appreciate the input. There are just some things I've never paid attention too. I'm sure I'll have more questions now that I found this forum. You guys rock.
     
  5. war88

    war88 New Member

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    Class 10 Sandisk card won't work correctly in my M. I was advised to go to a lower class, according to Motorola, they didn't test anything higher than a class 4 on the M before they released it.
     
  6. GoCliffGo05

    GoCliffGo05 Super Moderator
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    Class 10 cards crap out on the M + HD... class 4 is the best bet.

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2
     
  7. diablo81588

    diablo81588 Member

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    Well that's sad, class 4 cards are garbage. Class 10 works great on my phone.

    Sent from my DROID BIONIC using Tapatalk 2
     
  8. GoCliffGo05

    GoCliffGo05 Super Moderator
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    Class 4 works flawlessly... to most people they won't notice the difference...

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2
     
  9. diablo81588

    diablo81588 Member

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    There is a big difference.. Anyone who does backups, whether that be with titanium or do nandroid backups with recovery, will notice a major difference in write times. In addition, transferring files over USB will be dramatically faster. My phone came with a class 4, and I currently have a class 10. No problems for over a year and a major improvement in speed. You obviously have never used a class 10, or bought a cheap one with low transfer speeds.

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  10. GoCliffGo05

    GoCliffGo05 Super Moderator
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    Careful. I have used class 10... it doesn't work for our phone... I'm saying the common person won't notice the difference. That's all... I'm not disagreeing class 10 is better, I'm simply saying a class 4 will work fine for most.

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2
     
  11. diablo81588

    diablo81588 Member

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    Of course it will work fine. I never argued that class 4 was unreliable, only that they were slow in comparison. I think it's pathetic that brand new phones can't handle cards that have been available for years, especially when a phone that's well over a year old works fine with them.

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  12. jntdroid

    jntdroid Super Moderator
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    And there's simply something funky about those Sandisk Class 10's in these new Moto phones - that's why I said what I did initially. Class 6 might be a good balance. I've had 2 Maxx HD's and 3 M's, and tried 3 different Sandisk Class 10s - behaved the same all across the board. A few days would go by fine, then one day I'd reboot and half of my content was thrown into the Lost.Dir directory, which basically means gone unless you really want to dig deep.
     
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