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    8540W Can you place Dual Core Processor on a Quad Core Motherboard

    Discussion in 'HP Business Class Notebooks' started by tilhasbb, Feb 10, 2011.

  1. tilhasbb

    tilhasbb Notebook Consultant

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    I have an 8540W and I want to put more than 8G of Cam.
    Can you I replace the motherboard with a QuadCore with 4 Slots and place a Dual Core Processor ?
     
    tilhasbb, Feb 10, 2011
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  2. Judicator

    Judicator Judged and found wanting.

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    From tests with an 8740w, you could do that, but the dual core processor will only recognize 2 of the 4 slots (Yes, I know it's 16 GB in the test, but the test is using 8 GB SODIMMs).
     
    Judicator, Feb 10, 2011
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  3. Star Forge

    Star Forge Quaggan's Creed Redux!

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    Good to know. Thanks! :D
     
    Star Forge, Feb 10, 2011
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  4. Siorah

    Siorah Beware of Squirrels!

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    thats not completely true.

    the dual core DOES see all 4 slots. but can only address up to 16GB.

    i had to take out 2x8gb sticks in the test on that link, because the system doesn't start.

    however,

    with 4x4GB or 4x2GB or 2x2GB+2x4GB or 2x1GB+2x4GB

    the system sees all the ram, but downclocks it to 1066Mhz.

    Since Bios F.08 it's been stable using 4 sticks with a dual core, but it can be a bit dicey if you're using alot of ram for one application only. (example, After Effects)

    I'll Update that post with all known working configs now.

    Done
    http://forum.notebookreview.com/hp-...740w-benching-specs-thread-4.html#post7150339
     
    Siorah, Feb 11, 2011
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  5. Judicator

    Judicator Judged and found wanting.

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    Oh? Good to know. So the limitation isn't slots, but total memory. Interesting.
     
    Judicator, Feb 11, 2011
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  6. tilhasbb

    tilhasbb Notebook Consultant

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    Thank you Siorah!!!

    I'll see if I can switch my board to a QuadCore. Let's hope its just the board not also the bottom case
     
    tilhasbb, Feb 11, 2011
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