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  1. #1
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    is it socket 478 or 479?

    my lappy has a

    Pentium-M 1.3 Banias 130nm 1mb L2 400fsb cpu

    i am looking at a replacement cpu

    Pentium-M 765 2.1 Dothan 90nm 2mb L2 400fsb cpu

    do these cpus have the same socket?

    my laptop is a Dell Inspiron 8600 which dell to my knowledge only produced with up to the Pentium-M 1.7 Banias 130nm 1mb L2 400fsb cpu - the 8600(C) (no paralell or serail ports) came out with the dothan 533fsb cpus, according to the parts exchange they have different motherboards as well but...everyone says my 8600 is the same as the latitiude D800 which did come out with up to the Pentium-M 765 2.1 Dothan 90nm 2mb L2 400fsb cpu with the slowest possible being the Pentium-M 1.3 Banias 130nm 1mb L2 400fsb cpu
    Last edited by StompinRound; 12-18-2006 at 12:47 PM.

  2. #2
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    Re: is it socket 478 or 479?

    Socket is most likely the same (479) but they may not be compatable. Intel likes to change the voltage requirements, and you may need bios support for the new cpu (esp the larger cache). Check with the maker (you can use the bios #'s, long string with bios date to identify actual board) and ask them. If it was a desktop Intel, I would say most likely they would not be compatable (the older board would not suppport the new cpu).


    "The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
    - Albert Einstein (1879-1955)

  3. #3
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    Re: is it socket 478 or 479?

    Quote Originally Posted by StompinRound View Post
    my lappy has a

    Pentium-M 1.3 Banias 130nm 1mb L2 400fsb cpu

    i am looking at a replacement cpu

    Pentium-M 765 2.1 Dothan 90nm 2mb L2 400fsb cpu

    do these cpus have the same socket?
    Your Banias Pentium-M most likely is the SL6N8(479pin) or SL6N4(478pin).
    http://www.intel.com/support/process.../CS-007970.htm
    -478pin Micro-FCPGA(Flip Chip Pin Grid Array)
    -479pin Micro-FCBGA(Flip Chip Ball Grid Array)

    Now for the Dothan, you'd need to get either the SL7V3(478) or SL7UZ(479pin) depending on which chip is in your Dell.

    I would check to make sure with the Intel® Processor Identification Utility
    http://downloadfinder.intel.com/scri...=1881&lang=eng

  4. #4
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    Re: is it socket 478 or 479?

    well i am not sure by that tool - it does not specify the code or the socket

    it actualy states it is a FCPGA/FCBGA thats about it

    CPU-Z says it is a 479 mPGA


    according to dell my 1.3 is a 7U338 which is a SL6N4

    what is a SL7EM?

    are they compatible?

    the guy on ebay (yes i know) says

    Guaranteed compatibillity on
    Dell Inspiron 600m
    Dell Inspiron 8600
    Dell Inspiron 700m
    Dell Latitude D600
    Dell Latitude D800
    Dell Inspiron 6000
    Dell Inspiron 9200

    May work on other laptops taking this kind of CPU but compatibillity is not guaranteed
    he has a lot of other dell parts as well - feedback 3812 99.0% 39 total negatives

    but with ebay...ebay even has a special bullitin on the whole socket 478/479 thing

    acoording to ebay
    Intel Pentium M Centrino: Socket 479 pin. Even though Intel advertises Pentium M processors as 478 pin, it is in fact 479 pins.
    whould hate to fork out $100+ for somtheing that won't fit

    esp since there is the whole 8600/8600C thing it has me leary that anything over 1.7 won't work

    acording to the dell inspiron parts guide

    cpus for the 8600 only go up to 1.7 and the 8600C goes up to 2.1

    gues I should have bought the D800 latitude to begin with instead of doing all the converting huh?
    Last edited by StompinRound; 12-20-2006 at 12:06 AM.

  5. #5
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    Re: is it socket 478 or 479?

    The SL7EM is a 2.0GHz Dothan, and if I were you, I'd open up that laptop to make sure if it's a 478 or 479pin before I make an ebay purchase.

    Quite easy to tell the difference once you're looking at it, the 479pin doesn't have real pins, they're shaped like balls, where the 478 has straight pins.
    Last edited by AMDAthlonguy; 12-20-2006 at 09:09 AM.

  6. #6
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    Re: is it socket 478 or 479?

    well it has real pins, it is like the one on the left in the picture



    wikipedia says the one onthe left is s479 for pentium-m and celeron-m the one on the right is socket s479 for core solo and core duo

    and this is s478



    so i am assuming it is infact a s479, problem seems to all boil down to BIOS - will it accept above 1.7 or not? was this the reason for the production change to the 8600c? why did the 8600 require a design change after the Dothans came out when the D800 and the M60 did not?


    a good thing is, i took the cpu out of the lappy and holy cow, should have done this a long time ago - i think my lappy ate a cat!
    Last edited by StompinRound; 12-20-2006 at 10:28 AM.

  7. #7
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    Re: is it socket 478 or 479?

    According to Intel's technical documents on the Pentium-M, there is two sockets used, a 478pin FC-PGA and a 479pin FC-BGA.

    The pictures in your post are not FC-BGA cpu's, so there *should* only be 478pins on your cpu.

    Dell Inspiron 8600's manual
    http://support.dell.com/support/edoc...0/i8600-om.pdf

    According to Intel, as of October 23rd 2006, there are five FC-PGA Banias Pentium-M's.
    SL6N5 1.70GHz
    SL6FA 1.60GHz
    SL6F9 1.50GHz
    SL6F8 1.40GHz
    SL6N4 1.30GHz
    http://processorfinder.intel.com/Lis...Spec=&OrdCode=

    Concrete Established Facts
    Your Dell Inspiron 8600 has a 478pin FC-PGA socket.
    Your CPU is a SL6N4(478pin FC-PGA Pentium-M Banias 130nm 1024KB L2 400FSB).

    It would seem your best upgrade option is the SL6N5(1.70GHz)
    Last edited by AMDAthlonguy; 12-20-2006 at 07:37 PM.

  8. #8
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    Re: is it socket 478 or 479?

    thats what I am thinking too

    however, it you download BIOS updates from dell - there is no differentiation between the 8600 (up to 1.7 Banias cpus) and the 8600c (up to 1.7 Banias and 2.1 Dothan cpus)

    so in theory the bios should recognize it - provided the hardware can support it

    I think, just to test the waters, I may pick up a SL7GL (the slowest 90nm cpu) they don't sell to well since they are the slowest Dothan (like my 1.3 banias) they go $10-20 bucks on the bay if you stay away from the Buy-It-Now's

    http://processorfinder.intel.com/Lis...Spec=&OrdCode=

    if it will work, then the SL7EM ($150-200) or the SL7V3 ($200-300) should..then again

    I can grab a D800 whole laptop with a SL7EM for around $500

    Getting kind of on the limit of the value of the lappy....but hey if I did not like tinkering - I would buy a new one

  9. #9
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    Re: is it socket 478 or 479?

    If you update the Inspiron 8600 BIOS to version A14, it should support up to the SL7V3(2.10GHz) Dothan.

  10. #10
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    Re: is it socket 478 or 479?

    Quote Originally Posted by AMDAthlonguy View Post
    If you update the Inspiron 8600 BIOS to version A14, it should support up to the SL7V3(2.10GHz) Dothan.
    I put it in last week...A14 is running A-OK, got my WUXGA Samsung LCD panel in it too....

    Looking good!

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