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    T410 usable ram

    Discussion in 'Lenovo' started by chux, Mar 2, 2010.

  1. chux

    chux Newbie

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    Hi Guys,

    long time reader -first time poster

    I recently purchased a T410 with 4 gigs of ram..

    With the default windows 7 64 bit install in the system properties it says

    Installed memory(RAM): 4.00 GB (3.86 GB usable)

    Is everyone else getting the same thing? is it possible to 'free' those extra 140 or so mbs?

    I am using a the discrete nvidia graphics card so it wouldn't be the graphics card reserving ram...

    I have an x61 with 4 gig of ram with same os that does not have this problem.

    Anyone with any ideas?
     
    chux, Mar 2, 2010
    #1
  2. leshan

    leshan Notebook Consultant

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    Graphic card
     
    leshan, Mar 2, 2010
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  3. Lostinlaptopland

    Lostinlaptopland Notebook Consultant

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    Anything that needs address space has ram reserved. OS, hardware devices. That includes the gfx card. Data needs to go through the main ram on it's way to the gfx card and vice versa.
     
    Lostinlaptopland, Mar 2, 2010
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  4. chux

    chux Newbie

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    i dont fully understand..

    If i have a discrete graphics card with its own ram it doesnt need to use system ram

    If you are saying that it needs to use address space in to access its own ram it would makes sense that it has to reserver the system ram if it was a 32bit operating system

    Since i am using a 64 bit os it can use address space outside the 4 gig system ram anyway?

    I was jsut wondering if this is specific to the t410 because as I mentioned
    I do not have this problem with 4 gig ram on my X61
     
    chux, Mar 2, 2010
    #4
  5. XFlameWithin

    XFlameWithin Notebook Consultant

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    A dedicated graphics card may still take system memory for it's own use to supplement it's dedicated memory.
     
    XFlameWithin, Mar 2, 2010
    #5
  6. Lostinlaptopland

    Lostinlaptopland Notebook Consultant

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    64 or 32 it doesn't matter. Main system ram still needs to be held in reserve for things like the kernel, gfx card and any other devices that need it. You cannot store information in theoretical address space.
     
    Lostinlaptopland, Mar 3, 2010
    #6
  7. hceuterpe

    hceuterpe Notebook Evangelist

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    My 4GB loaded T410 with integrated graphics and Windows 7 Enterprise x64 has 3.8GB free.
     
    hceuterpe, Mar 4, 2010
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  8. Mutnat

    Mutnat Notebook Consultant

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    I know it's not a T410, but my T510 with integrated graphics and Win 7 Pro 64 shows 8 GB total, 7.80 GB useable.
     
    Mutnat, Mar 4, 2010
    #8