3.5 gb + 0.0 gb = 4 gb

Discussion in 'Gaming (Software and Graphics Cards)' started by gtx980m3.5gb, Aug 9, 2015.

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  1. Dufus

    Dufus .

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    That was quick. :)

    GPUMem tries allocate all available VRAM leaving 1KB free. You can see in the screen shot there is no memory left to allocate (0 - Free) but you have used less than 3.5GB with 4GB total. Don't know if this is a W10 thing or not. Maybe one of the other guys with 980m can try see what they get.
     
  2. gtx980m3.5gb

    gtx980m3.5gb Notebook Enthusiast

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    i am just confused by my card and here i am trying to find some helpful information from members
    i am trying to reply as fast as possible to respect all of your respon
    4 notable members confirmed it as software/os issue
    thank you
     
  3. Dufus

    Dufus .

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    Here's a desktop 2GB card using W10 and 9.18.13.4411 DX11.2

    112.png


    And W10 using 10.18.13.5362 DX12

    12.png

    As you can see we loose a large percentage of available VRAM. Don't know if that's to do with DX12 or not.
     
  4. Eindru

    Eindru Notebook Geek

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    This is interesting. I have a potentially failing 880m. Could running this test diagnose faulty vram if it cannot fill the memory correctly?

    Was really hoping to not have to start another thread.
     
    Last edited: Aug 10, 2015
  5. J.Dre

    J.Dre Notebook Nobel Laureate

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    Seems like Windows 10 is the culprit. No idea why.
     
  6. octiceps

    octiceps Nimrod

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    WDDM changes in Windows 10 are causing VRAM usage to be reported incorrectly
     
  7. D2 Ultima

    D2 Ultima Livestreaming Master

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    I actually wasn't speaking directly to you XD.
     
  8. t456

    t456 1977-09-05, 12:56:00 UTC Moderator

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    Maybe tied with this?
    This section describes new features for driver development in Windows 10
    There's a new registry entry for the 10 drivers that appears to handle just that:
    Code:
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\\MemoryManager]
    "DxgMms2OfferReclaim"=dword:00000002
    "DmaBufferBytesLimitAllDevices"=dword:20000000
    "DmaBufferListBytesLimitAllDevices"=dword:10000000
    Might tinker with the values and see what's what ...

    Really like those 'DxgMms2OfferReclaim'-type strings, btw; kinda like a puzzle ... Directx graphic Memory manager ... errr ... something-something :vbtongue: .
     
  9. Ethrem

    Ethrem Notebook Prophet

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    This has gone far enough. NVidia themselves have come out and said they have 3.5GB for regular GPU usage 500MB of "slower" memory (slower than system caching apparently)... If you take any further issue or have any other proof that nVidia is lying, feel free to PM it to me. This is the notebook forum, however, and while I could move it to desktop I will not do so unless I see a consolidated PM of proof. Post closed. There is nothing showing any mobile card having less than advertised.
     
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