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    Cf-28 Ram

    Discussion in 'Panasonic' started by Holiday, Jul 14, 2009.

  1. Holiday

    Holiday Notebook Geek

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    Just want to be sure b-4 i install this KTM-TP133/512 kingston 64mx64 144 pin ,, i have'nt received it yet but seem to recall reading something about 4 ic chips versus 8 ic chips, the pic of the one with this # on it showed 8 ..
    my 28 is an MK3 ,,CF-28SUJ24DM,, its a nice unit i dont want to take a chance of frying it if that can be done by installing the wrong RAM , ive heard its possible , im not sure ..

    Thanks for your help as always..Ralph: :)
     
    Holiday, Jul 14, 2009
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  2. Alex

    Alex Super Moderator

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    Go ahead
    No problem at all if its a non-compatable chip
    I have installed quite a few in cf28's
    It will either work and show the increase in the bios
    Or it will show 1/2 the memory capacity of the new ram


    Alex
     
    Alex, Jul 14, 2009
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  3. mnementh

    mnementh Crusty Ol' TinkerDwagon

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    Yup - what Alex sed.

    I've tested a hundred different SODIMMs (maybe more) in my Mk3; some didn't work, some only showed half, but haven't ever hurt my ToughBook.

    mnem
    Pizza would go better with that...
     
    mnementh, Jul 15, 2009
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  4. Holiday

    Holiday Notebook Geek

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    Thanks Alex,Mnem, its in an shows 760 .. Im on it now ..

    Prayer said!!
     
    Holiday, Jul 15, 2009
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  5. sunrk

    sunrk Notebook Evangelist

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    Yep I have a KTM-TP133/512 in my Mk-2 CF-28 and it works fine. I think it's only the Mk-1's which they won't work properly in.

    Unfortunately I don't think there are any 1 GB modules that work in the CF28's otherwise we could get them up to 1280 MB of RAM like the Mk-2 CF-18's.

    Craig.
     
    sunrk, Jul 17, 2009
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  6. mnementh

    mnementh Crusty Ol' TinkerDwagon

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    Ummm... nope - not gonna happen. These are a much OLDER generation of laptop; the chipsets ONLY supports JEDEC standard RAM, and the JEDEC standard does NOT allow for larger than 256MB in the PC100 Spec (Used in the Mk1), or 512MB in the PC133 Spec (Used in the Mk2 & Mk3).

    All PC100/PC133 RAM larger than that ARE NOT JEDEC standard compliant; manufacturers simply produced what is now called "High Density" RAM to overcome those limitations because demand was there for larger RAM configurations.

    The "standards" were loose at best, which is why we now have to "trial & error" RAM modules to get these older laptops going, or buy much more expensive JEDEC standard (The Kingston KVR/KTM series RAM we keep telling people to use) "Low-Density" RAM so we can get it right the first time.

    Not ALL laptops of this era were as picky as the CF-28s; I think they were required at the time because of their Military Contractor status to design using "Standards Compliant" components ONLY.

    mnem
    Pizza? No, Not you... I was talking to Your Toughbook...
     
    mnementh, Jul 17, 2009
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  7. krash kendall

    krash kendall Notebook Enthusiast

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    I just recieved a KTM TP133/512. The stock photo on ebay showed 4 chips, but the new in-box-stick has 8 per side. Popped it in and get 768RAM.

    Just waiting for my hard drive to arrive now so I can run the hell out of it and see if the increase helped.

    So, what is the difference beween 4 or 8 chips? Am I going to get a nasty suprise at some point?
     
    krash kendall, Aug 26, 2009
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  8. mnementh

    mnementh Crusty Ol' TinkerDwagon

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    Nope -

    Believe me, that's a GOOD thing. The 8-chip design means it IS low density; high-density RAM has FEWER chips to make the same size. Low-density RAM is ALWAYS "Forwards-Compatible"; because it adheres to the JEDEC standard, it will run in the picky machines as well as the not-so-picky ones.

    mnem
    Gimme a side of Noid with that...
     
    mnementh, Aug 27, 2009
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