iMac video card comparison: Radeon 5670 @ 1920x1080 faster than 5750 @ 2560x1440?

Discussion in 'iMac' started by theNEOone, Sep 26, 2010.

  1. theNEOone macrumors 6502

    Joined:
    Jun 28, 2007
    Location:
    NYC
    #1
    I'm debating between the 21.5" and the 27", and although I'd prefer the 21.5" and think its 3.6ghz i5 will do the trick, I keep getting hung up on the fact that that smaller iMac has a slower video card.

    My main "power uses" are Aperture 3 and Starcraft 2.

    I know that at similar resolutions the 5750 will eat the 5670 for lunch, but how about when running at each of their respective screen sizes? Is the 5670 @ 1920x1080 faster than 5750 @ 2560x1440???

    Thanks.


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  2. theNEOone thread starter macrumors 6502

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    Jun 28, 2007
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    NYC
  3. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #3
    Definitely not. A lot of people blow the resolution out of proportion when it comes to gaming potential. In fact Starcraft2 only loses 5-10fps when going from 1920x1080 to 2560x1440 on windows.
     
  4. theNEOone thread starter macrumors 6502

    Joined:
    Jun 28, 2007
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    NYC
    #4
    That can be pretty significant, and can mean the difference between playable and unplayable. Going from 20fps to 30fps is only 10fps, but represents a jump of 50%. I've been trying to google some benchmarks, but I can't seem to find anything.


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  5. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #5
    Yes, but in this case, you only lose 20% fps when going from 1920x1080 to 2560x1440 on the mobility 5850. Whereas mobility 5730 is 50% as powerful as mobility 5850.
     

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