GPU: 6770M? 6970M? with ext. monitor

Discussion in 'iMac' started by jdavtz, May 8, 2011.

  1. jdavtz macrumors 6502a

    Joined:
    Aug 22, 2005
    Location:
    Kenya
    #1
    I'm thinking of upgrading my 2008 iMac C2D.

    Searching online for 6770m 6790m gives me nothing that I can make sense of about these GPUs. Anyone have a link with relative performances?

    The thing is, I'm NOT really looking at gaming -- that's way down my list of importance.

    I primarily use Aperture (21MP RAW files). Now I know that Aperture heavily uses the GPU, but I wonder just how much difference there is between the GPU models (and memory amounts - 512MB vs. 1GB vs. 2GB)

    I was thinking of 27" i7 3.4GHz with the 2GB card, but then wondered, "would I be okay with the 21.5" i7 2.8 with the 6770M GPU (with only 512 MB VRAM)".

    If I bought the 21.5" it would be much easier to afford a nice 27" NEC PA271W monitor (£1000-ish) (2560x1440) -- BUT would the 6770M/512MB GPU really be good for running moderately intensive Aperture work over the two screens (21.5" + 27")?

    Cross-posting in photography forum - hope that's not a problem.
     
  2. jdavtz thread starter macrumors 6502a

    Joined:
    Aug 22, 2005
    Location:
    Kenya
    #3
    I had read that thread, but as far as I can see there's no mention at all of Aperture's performance regarding different GPUs, nor how well a 512MB card will perform running a second fairly high-resolution display as well as doing however much processing Aperture does offload to the GPU.
     
  3. Badger^2 macrumors 68000

    Badger^2

    Joined:
    Oct 29, 2009
    Location:
    Sacramento
    #4
    From the barefeats test:

    As for the GPU, according to Hardware Monitor, none of the four tests put more than a 4% load on it.
     
  4. jdavtz thread starter macrumors 6502a

    Joined:
    Aug 22, 2005
    Location:
    Kenya
    #5
    Thanks. I have to admit I didn't read that linked test.

    So all the stuff about Aperture utilising GPU is nonsense?
     

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