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Thread: Different classes of SD cards

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    pdaniel219's Avatar
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    #1

    Different classes of SD cards

    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.
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    #2
    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.
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    #3

    Re: Different classes of SD cards

    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
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    #4
    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.
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    #5
    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.
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    #6

    Re: Different classes of SD cards

    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



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    #7

    Re: Different classes of SD cards

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

    Sent from my DROID BIONIC using Tapatalk 2
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    #8

    Re: Different classes of SD cards

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

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2



    "She leans into me and I keep my arms around her. I don't fool myself that I hold her together -- She does that on her own -- But holding her keeps me from flying apart."
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    #9

    Re: Different classes of SD cards

    Quote Originally Posted by GoCliffGo05 View Post
    Class 4 works flawlessly... to most people they won't notice the difference...

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

    Sent from my DROID BIONIC using Tapatalk 2
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    #10

    Re: Different classes of SD cards

    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



    "She leans into me and I keep my arms around her. I don't fool myself that I hold her together -- She does that on her own -- But holding her keeps me from flying apart."
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