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    Question about memory card adapters...

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Red Scorpion, Sep 12, 2006.

  1. Red Scorpion

    Red Scorpion Notebook Geek NBR Reviewer

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    Is there such thing as MMC to sata or or MMC to IDE adapters?

    Is there something similar when it comes to SD memories?

    Thanx :D
     
    Red Scorpion, Sep 12, 2006
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  2. NetBrakr

    NetBrakr Notebook Deity

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    MMC? Do you how small is that card?

    I think you are referring to PCMCIA or Express Card adapters. If so, just google it. "IDE PCMCIA Adapter"

    JC
     
    NetBrakr, Sep 12, 2006
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  3. chris2pher71

    chris2pher71 Notebook Evangelist

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    hehehehe. That would probablly require fiber optics. And that would entail a lot of expensive converting hardware.
     
    chris2pher71, Sep 12, 2006
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  4. hhjlhkjvch

    hhjlhkjvch Notebook Guru

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    hhjlhkjvch, Sep 12, 2006
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  5. Red Scorpion

    Red Scorpion Notebook Geek NBR Reviewer

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    nope... I didn't mean the pcmcia adapter!

    I have seen CF to ata adapters, but I couldn't see any MMC to ata.

    There is a Japanese site that showed an SD to ata adapter, the site is all Japanese I don't understand a thing!
    http://www.ircube.jp/main/product/sdide/

    I wish they have those on ebay
     
    Red Scorpion, Sep 12, 2006
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  6. Pitabred

    Pitabred Linux geek con rat flail!

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    ...but why? What are you trying to accomplish? That would give us a better idea of what to suggest. I've run into many problems that people think they have solved "if only..." when it turns out they've been thinking wrong.
     
    Pitabred, Sep 12, 2006
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  7. Red Scorpion

    Red Scorpion Notebook Geek NBR Reviewer

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    Pitabred, I think you figured out what I want to do

    I want to make a solid state hard disk, of course I have seen the CF to IDE adapters, but the problem with CF cards is that they are slow(the fastest I found was 150x)!
    While SD and MMC cards are 30% faster (200x-266x)

    I want an adapter that can hook the MMc or SD card to my IDE port.
     
    Red Scorpion, Sep 12, 2006
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  8. Pitabred

    Pitabred Linux geek con rat flail!

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    The 150x means nothing if you don't have a base X to multiply by. Are SD and MMC using the same X (for CF, the base is 150KB/s, so a 150x card would be 22.5MB/s).

    What you could do is use a USB adapter and just set your computer to boot off of USB, at worst case. USB2 has up to 400MB/s transfer speed, so that should be plenty sufficient.

    You may also be able to use something like this: http://www.bwayphoto.com/product.asp?id=sdpcmcia&l=more and be able to boot off of that somehow. You might also be able to use a more convoluted path and get an MMC->CF adapter, and plug that adapter into a CF->IDE adapter.
     
    Pitabred, Sep 12, 2006
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  9. Jalf

    Jalf Comrade Santa

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    USB2 is 400mbit/s, not mbyte. (Or 480, to be exact)
    That's 50MB/s, which is a fair bit less than regular harddrives.
    Other than that, RAM-based storage usually has better access time than harddrives, but the total transfer bandwidth isn't neccesarily as good as that of a harddrive.
     
    Jalf, Sep 12, 2006
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  10. Red Scorpion

    Red Scorpion Notebook Geek NBR Reviewer

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    the x base is 150kb/sec you are right, it is the same base for SD and MMC.

    Unfortunately, the MMC->CF adapter has a low transfer rate that doesn't go byond 10MB/S (tested a couple of them)

    An MMC->IDE or SD->IDE adapter is the best solution! where can I find those?
     
    Red Scorpion, Sep 12, 2006
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  11. Pitabred

    Pitabred Linux geek con rat flail!

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    They don't make those as far as I can tell. If you've already tested them, you know more than most people here.

    On the other hand, why not take the direct route?

    Better drives it looks like (look at the Zeus lines): http://www.memtech.com/memtech_2.5-inch-ide-scsi-solid-state-flash-drives-products.html

    These seem like they might actually be available: http://techreport.com/reviews/2006q3/supertalent-flashide/index.x?pg=1

    Yup, they are. http://www.newegg.com/Product/Product.asp?Item=N82E16820208063
     
    Pitabred, Sep 12, 2006
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  12. Red Scorpion

    Red Scorpion Notebook Geek NBR Reviewer

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    thanx for the link Pitabred

    Some prices is much better than what I thought, but I couldn't find the data transfer rate!

    I guess the faster you want the more you have to pay!
     
    Red Scorpion, Sep 12, 2006
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  13. Pitabred

    Pitabred Linux geek con rat flail!

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    Look at the review in the techreport link. Flash drives have VERY quick seek rates, but any kind of flash has crappy sustained transfer rate. Even SD/MMC (try it with a standard card reader. You won't hit 50MB/s for a large single file, which is where USB2 will start limiting you, as per Jalf above). You won't get blazing speeds or anything, but it will use very little power and be very rugged. Those are the main benefits of flash over mechanical hard drives.
     
    Pitabred, Sep 12, 2006
    #13