SD Card reader on T4220 is EXTREMELY slow

Discussion in 'Fujitsu' started by Wookie, Jan 4, 2008.

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  1. digitallife

    digitallife T4420 owner

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    My first post here, :)
    Have been using my T4220 for one month. Really love it. Wish it runs a bit cooler though. But just recently realized the integrated SD card reader is extremely slow. Use an OCZ 1GB 150x card to test under HD Tune. In my desktop, via a standard reader it runs around 17MB/Sec. But with the T4220 reader it runs at 2.7MB/Sec :mad: . Called them up but got no answer. It's just me or everybody else also has this problem? Maybe they need to work out a new firmware update or sth.
     
  2. kureshii

    kureshii Scribbler - Standard Member Senior Member

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    I've got similar issues with the reader on the T4210... either they used a really slow interface, or as you said it needs an update =P
     
  3. Unlogic

    Unlogic Scribbler - Standard Member

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    The SD-card reader in the P1510 and P1610 series have the same problem. I did some research on this a while ago and posted it in P1510 section at http://www.leog.net/fujp_forum/

    Anyway what it all comes down to is that the SD-card reader doesn't support DMA and therefore only works in PIO mode which is very slow.

    Here a quote from http://en.wikipedia.org/wiki/Programmed_input/output
    Something tells me an updated driver won't cure this since it's most likely a limitation in the hardware of the cardreader itself.
     
  4. emotionr

    emotionr Pen Pal - Newbie

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    Mine doesn't even pop up~ and then my Windows explorer stops responding if I go to explorer or disk managment... but if I pop out the sd card it is back to normal again.

    help!
     
  5. PharCyde

    PharCyde Game Designer

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    My T4220 wont even read my ScanDisk 2gig or A-Data 16gig SD cards but it reads some generic 2 gig SD cards I picked up at Sammy's. This so far has been the only disappointing aspect of the T4220 I've found.

    I'd be happy with just an update that just allows the reading of all my SD cards...
     
  6. Wookie

    Wookie Pen Pal - Newbie

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    For that task you might take a look at Notebook Hardware Control (http://www.pbus-167.com/). This tool allows to modify the voltage of your CPU. I got my T2400 about 0.25V down - and got 15°C lower temperature. By the way, power consumption will also decrease :cool:

    Do you have a very high CPU load during you use the SD card?
     
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