gtx775m 2GB vs gtx780m 4GB

Discussion in 'iMac' started by Tjosansa, Sep 24, 2013.

  1. Tjosansa macrumors regular

    Tjosansa

    Joined:
    Jul 27, 2013
    #1
    Is it worth the extra money or is it only more memory on the gtx780m?
    Main reason is for gaming.
     
  2. jetjaguar macrumors 68030

    jetjaguar

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    #2
    get the 780 w 4gb .. about as powerful as a dekstop 680gtx .. way faster then the 775.
    If main reason is gaming then 780 no question
     
  3. Tjosansa thread starter macrumors regular

    Tjosansa

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    Jul 27, 2013
    #3
    Tnx alot.. Just ordered my iMac..
     
  4. slayerizer macrumors 6502a

    slayerizer

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    Canada
    #4
    I'm not sure about your facts!

    LINK

    680GTX = 5705..
    780M = 4200
     
  5. Idarzoid macrumors 6502

    Joined:
    Mar 15, 2013
    #5
    780m is based on the same core as 680/770, just clocked lower, it's not as powerful as these but it's not too far behind either.
     
  6. jclardy macrumors 68040

    jclardy

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    Oct 6, 2008
    #6
    I also took a look and it seems the 680MX from the 2012 model beats out the 780M? I am highly considering a refurb 2012 - I will be using ethernet so I don't really need wireless AC. The only other difference would be CPU which of course 2013 would be better.
     
  7. slayerizer macrumors 6502a

    slayerizer

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    #7
    it depends on the options you want.

    2013:
    + fusion drive is faster (1.5x)
    + cpu is faster
    + higher resale value
    - cost more

    2012
    + cheaper
    - resale value will be lower in you upgrade often
     
  8. costabunny macrumors 68020

    costabunny

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    Location:
    Weymouth, UK
    #8
    That table shows the 780M against the GTX680 (note NOT the M version in the 2012 iMac) - of course the 680 GTX will be better than the 780M as the 780 will have its clocks, power and cores lowered.

    Perhaps finding a comparison of the 680M would be more telling :)
     
  9. jclardy macrumors 68040

    jclardy

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    Oct 6, 2008
    #9
    The second post in this thread said it was comparable to the desktop version, which it is not. But even still, the 780M is rated lower than the 680MX in the top of the line 2012 model.
     
  10. slayerizer macrumors 6502a

    slayerizer

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    #10
    the original post I quoted referred to a desktop GTX680.. I was setting facts straight about that..
     
  11. costabunny macrumors 68020

    costabunny

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    #11
    I think when the actual unit in the new iMac can be seen (thus checking its clocks etc) it will be interesting for sure. On paper it should best the 680M used in the 2012 models. I can't really see Apple adding a lesser top end option.

    There is a comparison of the two chips as listed from the NVidia Specs here

    The 4GB from the 2GB will help in many situations. (thinking XPlane may be very much better as it loves texture memory) and I would think CUDA performance will leap.

    Can't wait to see some real-life benchmarks

    ----------

    oops I could have worded that a bit better as I meant for my post to add some detail to the point you were making. :( slap
     
  12. RoastingPig macrumors 68000

    RoastingPig

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  13. Ddyracer macrumors 68000

    Ddyracer

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    Nov 24, 2009
    #13
    Good thing is the 780m supports 4.3 opengl. Last years release but perhaps mavericks has full support for 4.3 for that card which means more performance will be squeezed out of it hopefully.
     
  14. Tjosansa thread starter macrumors regular

    Tjosansa

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    Jul 27, 2013
  15. bp1000 macrumors 65816

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    Jul 7, 2011
    #15
    I'm totally in the dark with regards to GFX performance but having just ordered a new Haswell iMac 3.4ghz i5 with the 4GB 780M GFX i would just like to know if it's powerful enough config to run future games like BF4 and intense games like Arma.

    Its been a while since i PC gamed and i would like to know if this iMac is capable of it?

    I assume it must be with these clock speeds and the GFX seems about 10% - 20% faster in FPS tests on a review i just read.
     
  16. leman, Sep 24, 2013
    Last edited: Sep 24, 2013

    leman macrumors 604

    Joined:
    Oct 14, 2008
    #16
    All geforce 5xx and higher support OpenGL 4.4

    Edit: actually, all geforce 4xx also support GL 4.4 ;)




    ----------

    Well, look for yourself

    http://www.notebookcheck.net/NVIDIA-GeForce-GTX-780M.88993.0.html

    http://www.notebookcheck.net/NVIDIA-GeForce-GTX-680MX.83519.0.html

    P.S. Guys, stop looking at PassMark for GPU benchmarks, its NOT ACCURATE!
     
  17. Idarzoid macrumors 6502

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    Mar 15, 2013
    #17
    Both are practically the same, 780m is clocked slightly higher. (720Mhz vs 823Mhz)
     
  18. Tjosansa thread starter macrumors regular

    Tjosansa

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    Jul 27, 2013
    #18
  19. elithrar macrumors 6502

    elithrar

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    May 31, 2007
    #19
    Also 120W TDP vs 100W TDP, so even more overhead with the 780M.
     
  20. Curren~Sea macrumors regular

    Curren~Sea

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    Vancouver, BC
    #20
  21. KingOfStuff macrumors member

    KingOfStuff

    Joined:
    Jul 8, 2013
    #21
    Should i return and upgarde?

    so i bought an iMac a week ago and got all the extra upgardes (i7 and 680mx and 500GB flash) is it worth my time to return it and buy the new ones?
     
  22. iF34R macrumors 6502a

    iF34R

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    South Carolina
    #22
    Heck yeah, I would.
     
  23. 2Turbo macrumors 6502

    2Turbo

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    Feb 18, 2011
    #23
    Same here. Will it run BF4 and CoD Ghosts smoothly.
     
  24. elithrar macrumors 6502

    elithrar

    Joined:
    May 31, 2007
    #24
    Last year's would too, but that depends on resolution * settings * your definition of smooth.

    1440p * medium/high settings * 45-60FPS? Probably plausible (more so for COD than BF4).
     

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