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    Help M17X R2 940Xm+CF 7970M

    Discussion in 'Alienware 17 and M17x' started by Riri-Fifi, Dec 22, 2012.

  1. Riri-Fifi

    Riri-Fifi Notebook Evangelist

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    Hello

    Problème Resulte 3Dmark 11

    Score combined

    [​IMG]

    édit:

    [​IMG]

    7970m crossfire keeps its 2D mode frequencies when i run 3D bench/games
    [​IMG]
    I have cut the green wire (ID wire) with my M18x PSU (330W) but now my GPUs never reach 3D clocks - it works fine with the 240W PSU but I'm lacking of power due to the 940XM requiring over 80W to sustain 3,5ghz.
    The PSU is definitely fine, but for some reasons refuse to work correctly in my m17xr2...


    Any ideas guys ?


    Thanks!
     
    Riri-Fifi, Dec 22, 2012
    #1
  2. CptXabaras

    CptXabaras Overclocked, Overvolted, Liquid Cooled

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    I guess you mean that the problem is the combined score too low, that's may be due to some power throttling cause the 2x7970m and XM cpu. Wich PSU are you using?

    Besides, the picture is too small
     
    CptXabaras, Dec 23, 2012
    #2
  3. Riri-Fifi

    Riri-Fifi Notebook Evangelist

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    Hello

    PSU Delta 240W
     
    Riri-Fifi, Dec 23, 2012
    #3
  4. CptXabaras

    CptXabaras Overclocked, Overvolted, Liquid Cooled

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    Your R2 is power hungry then. Dual 240W PSU setup or 330W modded PSU should be your solution
     
    CptXabaras, Dec 23, 2012
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  5. Riri-Fifi

    Riri-Fifi Notebook Evangelist

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    hello

    Modded psu 330W No fonctional
    [​IMG]

    7970m crossfire keeps its 2D mode frequencies when i run 3D bench/games
    [​IMG]
     
    Riri-Fifi, Dec 23, 2012
    #5
  6. sangemaru

    sangemaru Notebook Deity

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    Sorry for re-bumping this thread, but I'm really curious. Riri, did you solve the problem with the 330W PSU?
     
    sangemaru, May 23, 2013
    #6
  7. lif3t4k3r

    lif3t4k3r Notebook Consultant

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    I have noticed sometimes games will boot in 2D clocks for me as well since overvolting my 7970m. I would say it is the extra load but that doesnt explain why it does it randomly and not all the time
     
    lif3t4k3r, May 23, 2013
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  8. .Cameron.

    .Cameron. Notebook Consultant

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    I did the 240W identifier chip mod on a 330W PSU and my M17X R2 will still consistently crash whenever both cards (7970Ms) are being fully utilized with the 940XM installed (i.e. Skyrim can utilize Crossfire, but would run at 60 FPS on one card; Crysis 2 runs at 45 FPS on one card, goes up to 60 FPS with two, but the laptop shuts off within a minute of starting the game). Even undervolting and turning off Turbo on the i7 don't save enough power to let both run simultaneously under load.
     
    .Cameron., May 23, 2013
    #8