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Dell Inspiron 1100 CPU Upgrade, NEED HELP URGENT!

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Dell Inspiron 1100 CPU Upgrade, NEED HELP URGENT!

  • Hi guys,

    I have a Dell Inspiron 1100 Laptop.
    Specifications: Intel P4 2,2Ghz CELERON, 64Mb Video Intel 82845GL, Mainboard intel i845GL

    Processor specifications: Socket 478, 400 Fsb, 128kb cache, Technology 0.13 um, Multiplier x Bus speed 22.0 x 99.7 MHz (22x100=2200 2,2Ghz), 1.3 voltage, Northwood

    I had enough of this lazy CELERON, and I went down localy and bought a used processor with same specifications.

    New processor specifications: Mobile Intel Pentium 4 1,7Ghz, 512Kb cache, Socket 478, Fsb 400, Technology 0.13 um, 1,3 Voltage, I think it's also Northwood, at least the computer says it is :)

    Now, the problem i have it's a little strange... I have opened the laptop, installed the new processor, I used thermal paste, everything is working, EXCEPT the frequency... THE NEW PROCESSOR INSTALED FREQ IS 1,7Ghz as i've told you but is not working at full capacity. In BIOS it appears the processor it has only 1,2 Ghz... I have windows xp professional installed, and when I click properties on my computer it says:

    Computer:
    Mobile Intel(R) Pentium(R)
    4 - M Cpu 1.70GHz
    1.20 GHz, 512 MB of RAM

    I have installed CPU-Z software to see the properties of the 2,2 celeron and see if I can change it with a non celeron. I have the file saved so I will post below the celerons specifications, then the specifications of the new processor Mobile 1.7 (ALSO CPU-Z SOFTWARE SAYS THE PROCESSOR IS NOT WIRKING AT FULL CAPACITY)

    OLD CELERON 2,2Ghz PROPERTIES:

    Processor(s)
    Number of processors:   1
    Number of cores:   1 per processor
    Number of threads:   1 (max 1) per processor
    Name: Intel Celeron
    Code Name:    Northwood
    Specification:    Intel(R) Celeron(R) CPU 2.20GHz
    Package:    Socket 478 mPGA
    Family/Model/Stepping:   F.2.9
    Extended Family/Model:   F.2
    Brand ID:    10
    Core Stepping:    D1
    Technology:    0.13 um
    Core Speed:    2192.9 MHz
    Multiplier x Bus speed:   22.0 x 99.7 MHz
    Rated Bus speed:   398.7 MHz
    Stock frequency:   2200 MHz
    Instruction sets:   MMX, SSE, SSE2
    L1 Data cache:    8 KBytes, 4-way set associative, 64-byte line size
    Trace cache:    12 Kuops, 8-way set associative
    L2 cache 128:    KBytes, 2-way set associative, 64-byte line size

    Chipset & Memory
    Northbridge:    Intel i845GL rev. B1
    Southbridge:    Intel 82801DB (ICH4) rev. 02
    Memory Type:    DDR
    Memory Size:    512 MBytes
    Memory Frequency:   132.9 MHz (3:4)
    CAS# Latency (tCL):   2.0 clocks
    RAS# to CAS# (tRDC):   3 clocks
    RAS# Precharge (tRP):   3 clocks
    Cycle Time (tRAS):   6 clocks
    DRAM Idle Timer:   16 clocks

    System
    System Manufacturer:   Dell Computer Corporation
    System Name:    Inspiron 1100
    Mainboard Vendor:   Dell Computer Corporation
    Mainboard Model:   09U785
    BIOS Vendor:    Dell Computer Corporation
    BIOS Version:    A32
    BIOS:     Date 10/18/2004

    Memory SPD
    Module 1:    DDR, PC2300 (142 MHz), 256 MBytes, Infineon
    Module 2:    DDR, PC2300 (142 MHz), 256 MBytes, Infineon

    Software
    Windows Version:   Microsoft Windows XP Professional Service Pack 2 (Build 2600)
    DirectX Version:   9.0c

    NEW MOBILE INTEL PENTIUM 4 1,7 PROPERTIES:

    Processor(s)

    Number of processors:   1
    Number of cores:   1 per processor
    Number of threads:   1 (max 1) per processor
    Name:     Intel Pentium 4
    Code Name:    Northwood
    Specification:    Mobile Intel(R) Pentium(R) 4 - M CPU 1.70GHz
    Package:    Socket 478 mPGA
    Family/Model/Stepping:   F.2.7
    Extended Family/Model:   F.2
    Brand ID:    14
    Core Stepping:    C1
    Technology:    0.13 um
    Core Speed:    1196.1 MHz
    Multiplier x Bus speed:   12.0 x 99.7 MHz
    Rated Bus speed:   398.7 MHz
    Stock frequency:   1700 MHz
    Instruction sets:   MMX, SSE, SSE2
    L1 Data cache:    8 KBytes, 4-way set associative, 64-byte line size
    Trace cache:    12 Kuops, 8-way set associative
    L2 cache:    512 KBytes, 8-way set associative, 64-byte line size

    Chipset & Memory
    SAME AS BEFORE (celeron spec)

    Memory SPD
    SAME AS BEFORE (celeron spec)

    Software
    SAME AS BEFORE (celeron spec)

    Some Intel links of the old and new processors:

    Celeron:
    http://processorfinder.intel.com/de...
    Mobile:
    http://processorfinder.intel.com/de...

    Please note I haven't reinstall windows after the processor was changed. It's the same old windos XP Prof.

    AS FAR AS I SEE, THE PROBLEM IS AT THE "MULTIPLIER X BUS" 12.0x99,7=1196.1 IT MUST BE 17x99.7=1,7Ghz SO IT CAN WORK AT 1,7Ghz

    In bios I can't change anything linked to the processor. The bios is very simple. It's the latest Bios Veriosn A32. On the motherboard you can't find any switch, as you can find on the older laptop mainboard...

    Please tell me what to do to make it work at full capacity?
    The difference from 2,2 celeron to 1,2M it's huge, but i want to make it work as factory made this processor, 1.7Ghz :D

    Thanks!!! I wait your opinions!

  • The 1100 uses a desktop Northwood or earlier P4, not a mobile CPU. A mobile P4 will not run at full speed in the Inspiron 1100.
  • Thanks for your reply! So you say I can't convince this processor to work at full speed? What other options do I have? can I overclock? What other processor can I use to have some speed except the celeron thing which is VERY lazy!  :D
     
  • In order to run at full speed, you need a desktop P4, not a mobile P4. As I recall, the 1100 supports only the 400 MHz bus units. You will not get a mobile P4 of any type to run at full speed on an 1100.
  • Ok, I understand I can't use P4 Mobile. Can I use this tipe of proc: P4 Prescot @ 2.8 GHz socket 478 Fsb 400 ?
  • No. Northwood P4 only (max 512K cache). Prescott CPUs are not supported.
  • Thank you very much! I understand now, I need Intel Pentium 4 Northwood core... Do you know where I can find one?
    Thanks!
  • Try www.starmicro.net - they are one of the few who still sell the older P4s.
  • Also here: http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=TCTR-ERRN91 they say another 3 models of p4 i couldn't find on intel.com
     
    38L5107 18R9988 Pentium 4 - Northwood 400 / 2600 - 512K SL6PP (Found on intel.com)
    38L5114 19R2302 Pentium 4 - Northwood 400 / 2800 - 512K SL74P (Could't Find)
    38L5330 19R2302 Pentium 4 - Northwood 400 / 2800 - 512K SL7E7 (Could't Find)
    38L5115 19R2304 Pentium 4 - Northwood 400 / 3000 - 512K SL74Q (Could't Find)

    I have to admit I would like p4 @ 2,8 or 3,0 :)

     

  • Here's the 2.8 http://www.starmicro.net/detail.aspx?ID=542 You'll have a hard time finding a 3.0 - they were not made in large quantity. Be VERY careful with the faster P4s - this system isn't cooled well to begin with and you can easily kill it with too fast a CPU.
  • Thanks for all the info and support. I will try to find P4 2,6 or 2.8 localy because new it's very expensive. I will come back with an answer after I change the processor.
    Thanks again!
  • I can confirm that the 2.6 GHz Northwood P4 acts very well as a replacement for the 2.2 GHz Celeron. TDP has only increased from 57 watts to 63 watts, which the admittedly underpowered cooling set-up is, nevertheless, able to handle.

    I replaced mine about 6 months ago, and all is running fine. Despite advice to the contrary, I'm still running the original A22 BIOS.....and no problems have reared their head. I'm using Linux on the old girl nowadays (Puppy Linux, to be precise), and the awkward graphics chip, after a bit of juggling, is working fine.

    Mike.

    You can only be certain of three things in life; birth, death.....and taxes. Hah!