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[CPU UPGRADE] Need an advice for a CPU upgrade

  1. Simone_Sola97
    Jelly Bean Apr 12, 2016

    Simone_Sola97 , Apr 12, 2016 :
    Hi everyone,
    I have an Acer TravelMate 800 laptop, which I disassembled and that I want to use as a "secondary PC" just in case I need a computer for something. Now, it has an Intel Pentium M clocked at 1.3GHz, 512MB RAM (128MB + 256MB) and a 40GB HDD (4200rpm). As you may expect, the performance are... Not so brilliant. I've decided to upgrade the RAM to 1GB (which I have fortunately found compatible with this very old PC) and the HDD, replacing it with a faster one that has a rotation speed of 7200rpm. My question is: it's even possible to upgrade also the CPU? I have made some research and I have found that the motherboard uses the Socket 479 and the chipset is supposed to be the Intel 855PM. My questions are:
    1) Can you confirm that the chipset (not the CPU) is the same for all the versions of the TravelMate 800? Here it says that there are three versions with three different CPUs, and I don't know if my TravelMate is the 800LCi, the one which the specs previously linked refers to.
    2) I think that the Intel Pentium M 780 can be a valid CPU replacement, but I have no idea if it can works with the motherboard. Just in case, it will downclock itself or it can mess up everything? Thanks in advance for your time.
    Simone Sola
     

    #1
  2. Deactivated User
    Apr 12, 2016


    #2
  3. yahiroz
    Jelly Bean Apr 12, 2016

    yahiroz , Apr 12, 2016 :
    I would be more worried if the laptop heatsink can handle the extra heat the higher clocked M is producing. The 780 does support speedstep so it will downclock itself when idle but it may also suffer from thermal throttling. But the FSB runs at 533MHz compared to the 400MHz stock, so I don't think it will properly work in the laptop.
     

    #3
    Simone_Sola97 likes this.
  4. arkashaf
    Cupcake Apr 12, 2016

  5. lolrepeatlol
    Jelly Bean Apr 12, 2016


    #5
  6. Georgevs
    Gingerbread Apr 12, 2016


    #6
    Simone_Sola97 and Wahoux like this.
  7. Simone_Sola97
    Jelly Bean Apr 12, 2016

    Simone_Sola97 , Apr 12, 2016 :
    Already bought in September! :)
     

    #7
    Georgevs likes this.
  8. Simone_Sola97
    Jelly Bean Apr 12, 2016

    Simone_Sola97 , Apr 12, 2016 :
    Thanks. So you think it will not work? Or maybe it will just run at 1.3GHz instead of 2.27GHz?
     

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  9. Simone_Sola97
    Jelly Bean Apr 12, 2016

    Simone_Sola97 , Apr 12, 2016 :
    The PC "by deafult" is capable of run Lubuntu 14.04 in a pretty decent way, just sometimes it is a little slow. With new RAM and the HDD it will be even faster, perfect as a "backup PC". If it is possibile to fit a new CPU (I've found the Pentium M 780 at just 3.80€ as a refurbished product) I will be happier :)
     

    #9
  10. Deactivated User
    Apr 12, 2016


    #10
  11. Simone_Sola97
    Jelly Bean Apr 12, 2016

    Simone_Sola97 , Apr 12, 2016 :
    Maybe there is someone with experience... You know, there is a lot of knowledge here and I have got some interesting information. Thanks.
     

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  12. yahiroz
    Jelly Bean Apr 12, 2016

    yahiroz , Apr 12, 2016 :
    Seeing as it's that cheap then I guess it's worth a try. The worst that will happen is it will not boot at all, but it won't harm any of the other components so you can change back to the old CPU if needed.

    FYI the CPU will not "downclock" the way you're imagining it, the CPU will always try run at the rated speed during boot. Once it's in Windows then it will downclock, but it needs to get past boot first :p.
     

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  13. Simone_Sola97
    Jelly Bean Apr 13, 2016

    Simone_Sola97 , Apr 13, 2016 :
    It runs Lubuntu. Do you think that Linux or the Linux kernel can make some differences? Do you think that, considering that the clock speed can be the same, it's worth to upgrade from Pentium M 1.3 to Pentium M 780?
     

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  14. yahiroz
    Jelly Bean Apr 13, 2016

    yahiroz , Apr 13, 2016 :
    It won't make a difference, before booting to any OS, the BIOS will go through a phase called POST to ensure everything is working and nothing is missing. Being able to run at the same speed won't make a difference either, as the rated speed still is different, as well as the FSB speed.
     

    #14