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    CF-28 memory problems.

    Discussion in 'Panasonic' started by rcorreas, Feb 2, 2008.

  1. rcorreas

    rcorreas Newbie

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    Hi friends, could you help a brazilian noob friend?

    I just bought a CF-28, 800 Mhz, 256 MB Ram.

    Today i tested a 256 Mb, SoDimm, PC100, 144 pin, with 8 chips, and the lap top didn't recognize that...

    The salesman told me that only memories with 16 chips are compatibles of the CF-28.

    The question is: Is it true?

    The second question is: What kind of memory i could buy to this lap top?

    And the last question is: My cf-28 configuration recognize 512 Mb's memories too?

    Thanks everybody for the help!
     
    rcorreas, Feb 2, 2008
    #1
  2. kusa

    kusa Notebook Consultant

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    kusa, Feb 2, 2008
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  3. Toughbook

    Toughbook Drop and Give Me 20!

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    You want the kind of RAM that has 4 chips on each side for the CF-28. Whoever told you eight doesn't know what he is talking about.

    If you have the latest BIOS revision your 800Mhz & 1Ghz CF-28 should be able to go all the way up to 768 MB RAM. (256 on board and a stick of 512) the 600 series can't go up this far.
     
    Toughbook, Feb 3, 2008
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  4. klboo

    klboo Notebook Evangelist

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    klboo, Feb 3, 2008
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  5. rcorreas

    rcorreas Newbie

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    rcorreas, Feb 5, 2008
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  6. Doobi

    Doobi ToughBook DeityInTraining

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    Uh, I do believe 8 is correct. That is, 8 chips on either side for a total of 16. This is what I just purchased yesterday, and it worked like a charm.

    Sorry to correct you there big guy, but, YOUR WRONG!!! hehehehe
     
    Doobi, Feb 5, 2008
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  7. Stephenwilly

    Stephenwilly Newbie

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    I have a 512 stick with Centon on the sticker that has 8 chips on both sides and it works like a charm. Maybe number of chips isn't the issue but rather the density of the chips themselves. I have a ton of sticks with 4 chips on each side that don't work and are gonna find their way back to ebay. There's something missing and it ain't the number of chips.
     
    Stephenwilly, Jul 24, 2008
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  8. Rob

    Rob Toughbook Aficionado

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    NO THIS MATTERS, at my company we even sell the sticks that have 8 chips on both sides for more money (and the 256MB ones as well that have 8 on each side) because they are more compatible, when we're talking pc 100 ram 8 chips per side ALL THE WAY... samsung or micron is the way to go for brand. I've tested this in THOUSANDS UPON THOUSANDS of laptops!!! including all toughbooks (especially CF-27's (256mb chips) and CF-28's), IBM T20/T21/T22/T23, & Dell latitude C500/C600/C510/C610
     
    Rob, Jul 24, 2008
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  9. sunrk

    sunrk Notebook Evangelist

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    There's a place on Ebay selling a stack of Kingston 512 MB SODIMM's which I think will work in CF28's of the mk-2 and 3 variety. They're used modules, and the seller has the listing set up to accept offers but doesn't seem to want to accept offers less than the B.I.N price of US$29.95 each. Note they're used modules though.

    One of the listings for the place is here.

    I read somewhere that Kingston KTM-TP133/512's work in 800 and 1000 MHz CF28's. Might buy a new stick of that and try it out in my 800 Mhz system. Don't like used RAM much for a system which needs to be reliable in the field. :cool:

    I see a few variants of these 144 pin PC133 SODIMM's... Can KTT-SO133/512 be used?

    Craig.
     
    sunrk, Jan 12, 2009
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  10. vventurelli74

    vventurelli74 Notebook Enthusiast

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    Yea, I own a MK3 Toughbook (PIII 1.0GHz) and owned a MK2 (PIII 800MHz) When I aquired the MK3, I swapped the memory out from the M2 that I purchased Prior. It is a 512MB Kingston stick that worked in both the MK2 and MK3. The Memory Stick is #KTM-TP133/512 and it works perfectly for my application. This memory also has 8 Chips on both sides (For a total of 16)

    You can see it here from where I purchased it on eBay:

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=320328627076&ssPageName=STRK:MEWN:IT&ih=011

    Works for me, should for you too :)

    Oh, and as far as the Kingston KTT-SO133/512 memory chip being used, you've got me stumped. Both the KTT and the KTM have pretty identical specs: PC133, non-parity, CL3, 3.3V, Un-Buffered, Non-ECC. The only thing I can think of is maybe the KTM is low profile and the KTT is normal sized (?) suppose the only way to know for sure is a test!
     
    vventurelli74, Jan 12, 2009
    #10