The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Fastest SD card

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by jackluo923, Apr 15, 2009.

  1. jackluo923

    jackluo923 Notebook Virtuoso

    Reputations:
    1,038
    Messages:
    3,071
    Likes Received:
    1
    Trophy Points:
    105
    What's the fastest SD card available right now?
    Are there any SDHC card capable of 50MB/s+ (or class 50 if you want to call it by speed rating)?
     
    jackluo923, Apr 15, 2009
    #1
  2. FoxTrot1337

    FoxTrot1337 Notebook Deity

    Reputations:
    352
    Messages:
    1,042
    Likes Received:
    0
    Trophy Points:
    55
    I thought the fastest was Class 8?

    EDIT: Sry I meant class 6

    This was the highest listed on Wikipedia:

     
    FoxTrot1337, Apr 15, 2009
    #2
  3. jackluo923

    jackluo923 Notebook Virtuoso

    Reputations:
    1,038
    Messages:
    3,071
    Likes Received:
    1
    Trophy Points:
    105
    The fastest "STANDARD" speed rating is class 6. Class 6 = sustained 6MB/s throughput.

    Many SDHC card can exceed that speed, yet they're still called Class 6 SDHC card.
     
    jackluo923, Apr 15, 2009
    #3
  4. deputc26

    deputc26 Notebook Consultant

    Reputations:
    29
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    30
    Just cause class 6 is the highest existing rating doesn't mean cards don't come faster than 6 MB/s; they're currently up to 3x that speed. See links below. (edit: I see you addressed this already jack)

    Here is the most recent SD Card shootout, http://www.tomshardware.com/reviews/sdhc-memory-card,2143.html.

    There are currently no cards available that offer 50MB/s but the new SD format (SDXC) will; click here for the only announced sdXC product. http://www.dpreview.com/news/0903/09030601pretecsdxc.asp

    _Nate
     
    deputc26, Apr 15, 2009
    #4
  5. jackluo923

    jackluo923 Notebook Virtuoso

    Reputations:
    1,038
    Messages:
    3,071
    Likes Received:
    1
    Trophy Points:
    105
    WOW.. either TOMSHARDWARE people used an ultraslow card reader or all the card suck.

    My acer aspire one got around 20MB/s read throughput on a very cheap class 6 4GB ADATA SDHC card.

    I got over 30MB/s burst speed from a very fast SD card.
     
    jackluo923, Apr 15, 2009
    #5
  6. David

    David NBR Random Reviewer NBR Reviewer

    Reputations:
    7,515
    Messages:
    8,733
    Likes Received:
    7
    Trophy Points:
    206
    David, Apr 15, 2009
    #6
  7. stevezachtech

    stevezachtech Notebook Evangelist

    Reputations:
    14
    Messages:
    348
    Likes Received:
    0
    Trophy Points:
    30
    So a class 50 does not exist? But I think the class 6 at 300x is fairly fast in my opinion..
     
    stevezachtech, Apr 15, 2009
    #7
  8. jackluo923

    jackluo923 Notebook Virtuoso

    Reputations:
    1,038
    Messages:
    3,071
    Likes Received:
    1
    Trophy Points:
    105
    Awesome.. Too bad the card cost a fortune or else I would've bought it.
     
    jackluo923, Apr 15, 2009
    #8
  9. f4ding

    f4ding Laptop Owner

    Reputations:
    261
    Messages:
    2,085
    Likes Received:
    0
    Trophy Points:
    55
    I wonder whether the internal 7-in-1 card reader in most notebooks can just upgrade the firmware to read the SDXC.
     
    f4ding, Jun 6, 2009
    #9
  10. goofball

    goofball Notebook Deity

    Reputations:
    358
    Messages:
    1,710
    Likes Received:
    0
    Trophy Points:
    55
    also note that to hit the ultra fast speeds, you need a UDMA card reader also which won't connect through USB but through Firewire. USB is too slow (until 3.0 anyways).
     
    goofball, Jun 6, 2009
    #10
  11. paper_wastage

    paper_wastage Beat this 7x7x7 Cube

    Reputations:
    486
    Messages:
    2,596
    Likes Received:
    24
    Trophy Points:
    56
    probably not... looks too different from SD/SDHC

    besides, Pretec launched it's SDXC card but no devices that can read it
     
    paper_wastage, Jun 6, 2009
    #11
  12. Soviet Sunrise

    Soviet Sunrise Notebook Prophet

    Reputations:
    2,140
    Messages:
    6,547
    Likes Received:
    0
    Trophy Points:
    205
    Soviet Sunrise, Jun 6, 2009
    #12
  13. aidil

    aidil Notebook Evangelist

    Reputations:
    311
    Messages:
    490
    Likes Received:
    0
    Trophy Points:
    30
    In case there's somebody who hasn't read the news, SDHC latest class 10 is out now.
    Source: http://www.dpreview.com/news/0905/09052102panasonicclass10sdhc.asp

    Regarding this classification, it's mainly writing speed. It's the way to standardize of guaranteed minimum speed stated in MB/s. So, the maximum speed could be a lot faster than that, especially the reading speed.

    Source: http://www.sdcard.org/consumers/faq/#speedclass
     
    aidil, Jun 6, 2009
    #13
  14. f4ding

    f4ding Laptop Owner

    Reputations:
    261
    Messages:
    2,085
    Likes Received:
    0
    Trophy Points:
    55
    Look different? I'm pretty sure physical spec of SD=SDHC=SDXC. Besides, when engadget reported about the Pretec SDXC launch with no devices to read it, I thought they meant cameras or camcorders. It seems that if you can update windows to read exFat, all is well with desktops/laptops. Or does the electronic in the card readers themselves different for SDXC?
     
    f4ding, Jun 7, 2009
    #14
  15. jackluo923

    jackluo923 Notebook Virtuoso

    Reputations:
    1,038
    Messages:
    3,071
    Likes Received:
    1
    Trophy Points:
    105
    I have PCI express based card reader. The card reader can have up to 1500MB/s bandwidth i think. Also, read/writing on this card reader barely impacts the cpu load. E.g transfering data at 25MB/s from my SD card using the pci express based card reader use 3% cpu power. Transfer at 20MB/s through usb card reader maxes out my processor.
     
    jackluo923, Jun 7, 2009
    #15
  16. f4ding

    f4ding Laptop Owner

    Reputations:
    261
    Messages:
    2,085
    Likes Received:
    0
    Trophy Points:
    55
    It's not the speed that I am worried about. I might have quote deputc26 wrong. I am not concern about the speed. I am more concern of the compatibility with SDXC. I am sorry I hijack your thread.
     
    f4ding, Jun 7, 2009
    #16