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Thread: Very slow CF reads... what's the problem?

  1. #1
    Constant Bitrate Outsider787's Avatar
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    Very slow CF reads... what's the problem?

    I'm setting up my second carpc.
    I'm using a VIA EPIA M1000 mobo with 1 gig of ram.
    I've installed a lite version of XP (created with nLite) on a regular HD, with both EWF as well as MinLogon.
    The system boots very quickly off the HD. about 10-15 sec untill windows is usable, and another 10-15 till Road Runner is fully usable.
    I'm very happy with those numbers.

    I then copied the entire HD to a 4gig CF card, with room to spare.

    When I boot off the CF card, it takes forever. I haven't timed it but it's easily 10 times slower.
    The CF card is a Kingston Elite Pro 133X card. The CF to IDE adaptor is something I picked up on ebay a couple of years ago.

    Could it be that the CF to IDE adapter is causing this dramatic slowdown?

    If so, any recomendations on a fast CF to IDE adapter?

  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
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    Yes the adapter could be bottlneck, but I think you have other issues.

    That card has a max transfer read speed of 25Mb/s and max write of 20Mb/s.

    ATA100 from before the new millenium is 100Mb/s, ATA133 is 133Mb/s. SATAI is 150Mb/s and SATAII is 300Mb/s.

    I think there is your bottlneck.

    A CF card is never for speed. It is for durability.
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  3. #3
    FLAC SFiorito's Avatar
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    use only CF adapters from logicsupply.com or addonics.com
    EWF, HORM, MinLogon on XP.

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  4. #4
    Variable Bitrate dMand's Avatar
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    Quote Originally Posted by Outsider787 View Post
    I'm setting up my second carpc.
    I'm using a VIA EPIA M1000 mobo with 1 gig of ram.
    I've installed a lite version of XP (created with nLite) on a regular HD, with both EWF as well as MinLogon.
    The system boots very quickly off the HD. about 10-15 sec untill windows is usable, and another 10-15 till Road Runner is fully usable.
    I'm very happy with those numbers.

    I then copied the entire HD to a 4gig CF card, with room to spare.

    When I boot off the CF card, it takes forever. I haven't timed it but it's easily 10 times slower.
    The CF card is a Kingston Elite Pro 133X card. The CF to IDE adaptor is something I picked up on ebay a couple of years ago.

    Could it be that the CF to IDE adapter is causing this dramatic slowdown?

    If so, any recomendations on a fast CF to IDE adapter?
    You could try changing the IDE adapter, but, I don't think it will help much. Compact flash cards are slow when used for loading an operating system. The particular card you have operates @ 20Mb/s read and write, which is consistent with your findings.

    If you put 4 of them in RAID0, you just might see a performance increase. However, I doubt it will be worth the money compared to the VelociRaptor hard disks, or an Intel SSD.

    If you insist on CF, then try Lexar. They make the fastest CF @ 300x, with 45mb/s transfer speeds. It will set you back $180, nevertheless, it's a lost cause, better left for the high end digital camera market at which they were intended for. The Lexar 300x is still much slower than most of today's standard hard drives.

  5. #5
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    Make sure the drive is in the higest DMA (or if it doesnt support DMA, PIO) mode it supports. Using HDTach or another program, what kind of throughput are you getting?

  6. #6
    DLe
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    Constant Bitrate DLe's Avatar
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    outsider787: did you ever find out what the issue was? im in the same boat with (probably) the same hardware (ide2cf-a1 adapter, 8gb kingston elite pro 133x CF card). it boots fine to the blue screen before windows but then takes about a good 5 mins to boot explorer.exe so i don't see anything until about 8 mins after reboot!

    any help would be appreciated. thanks!

  7. #7
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    I also did the big mistake to buy a 8Gb Kingston Elite Pro 133X. When I copy over the files during the installation of XP it went okey but when I come to the installation it took ages. When I finaly was ready (after several hours of installation) it worked but the boot took ages and the system was like freezing some times.

    I then bought a transcend extreme speed 4Gb instead (300X). Then it workes without any problems. It was the kingstone Elite Pro card that is not possible to use as a hard drive.

    I think it has to do with what kind of memory they are using. Transcend is using SLC and Kingstone elite pro is probably done with MLC. Kingstone Ultimate 266X card is probably working okey. They are also using SLC.

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