Furthermore....SD, SDIO and MMC

  herc182 15:36 23 Jul 2004

Sorry people, but what is the difference between SD, SDIO and MMC memory? my PDA supports all three but i am unsure which is best/cheapest (have tried looking for it online but cant get the right key words!!).


  herc182 16:30 23 Jul 2004

Its my PDA and not my PC, hence this doesnt work....
I know what memory it takes, just not sure what the differences are between them, and the costs.

Thanks for you help

  Stuartli 16:49 23 Jul 2004

Secure Digital is an encrypted version of MultiMedia memory and, in most cases, products such as digital cameras using SD memory are also compatible with MMC; however this is not written in stone and your manual will advise.

Here's a description of SDIO:

click here

An explanation of the advantages of SD over MMC:

click here

  herc182 17:08 23 Jul 2004

Thanks for that. So is SDIO a form of adding functionality to a device (such as bluetooth and WiFi)? whereas SD and MMC are storage only?


  herc182 17:26 23 Jul 2004

i read that MMC is slower than SD and that it has less security (?). I was thinking of getting the SD II. its a little xtra but will benefit from speed. dont know if its a massive increase in speed tho.


  Stuartli 10:24 24 Jul 2004

Yes, but SD is far superior to MMC - that's why it was developed - and the price difference these days over MMC is now very small.

  herc182 09:17 26 Jul 2004

So is the difference between SD and SDII notable (in a PDA) and worth paying the extra money for?


  Stuartli 10:07 26 Jul 2004

SDIO is an input/output interface use of the Secure Digital/MMC socket:

click here

Secure Digital is the memory card.

  Stuartli 10:40 26 Jul 2004

...these are the differences between memory cards:

click here

Links for the specifications of various cards:

click here

  herc182 10:44 26 Jul 2004

Exactly what i was looking for. thank you very much.
I will now go and bask in the glory of my new found knowledge....

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