[maemo-users] Which *class* of SDHC card to get?

From: Mark wolfmane at gmail.com
Date: Thu Sep 25 23:31:22 EEST 2008
In general, it's a good idea to get the fastest (in addition to
largest) card you can afford. Remember, these things can be used in
more than just your tablet, but even if they never get taken out once
they're inserted, you can't be sure to what uses you're going to put
them. A higher-speed card can make a big difference when
copying/transferring large or many files like lots of mp3s or videos,
and if you've enabled swap on your removable card, that could also be
an issue. Any applications that store/access large amounts of data on
your removable memory (like map/nav) will be happier with higher-speed

I can tell very little difference with "small" files - "burst" speeds
of even the slower SD cards can be amazingly high. It's situations
that require extended read/write operations that make the difference.

You may not plan to remove a card once you put it into your tablet,
but what happens when those 32Gb cards (and later on 64Gb, 128Gb,
etc.) become affordable (and sooner or later they will), and you
decide to use the old card in your mp3 player or camera? In my
experience, digital cameras are very sensitive to the speed of cards,
especially the larger ones. I hate having to wait 10 seconds between
shots or much longer than that when booting up. Even waiting for 8Gb
or 16Gb of mp3's to transfer to your card all at once will be less
painful with a faster card.

>From what I've seen, there isn't that much difference in price between
the different classes of cards if you shop around.


On Thu, Sep 25, 2008 at 1:33 PM, lakestevensdental
<lakestevensdental at verizon.net> wrote:
> It's my understanding from previous threads on this subject that a Class
> 6 card is just about as fast as the current n8xx processing can handle.
>  As I understand it, the primary use of faster cards is for large format
> digital photo and video applications.
>  It's possible that if you ever switch to an ASUS eee PC (or something
> like it) with a 800 or faster processor, you might want a Class 8 card.
> Always, Fred C
> Christoph Eckert wrote:
>> Hi,
>>> I wend out shopping for an 8GB SDHC card for my n800, and was surprised
>>> by the enormous range of prices -- almost an order of magnitude.  Of
>>> course there's issues of quality and brand-recognition, but the biggest
>>> difference seemed to be between the class of the card.  There were cards
>>> of class 2, class 4, ans class 6.  Now the class appears to be a matter
>>> of speed.
>> I run the system on a 4GB card which is of class 4. I have no clue if class 2
>> would be to slow or class 6 would be a significant boost, but cannot complain
>> about my class 4 card.
>> Cheers,
>> ce
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