New iMac 2.7i5 vs 3.1i5 vs 3.4i7 (also gfx)

Discussion in 'iMac' started by Avicenna, Aug 20, 2011.

  1. Avicenna macrumors member

    Joined:
    Jul 16, 2009
    #1
    Hi,
    I am about to get my iMac. I am stuck between 2.7i5, or to go with 3.1i5 or 3.4i7. What the performance difference? is it worth the price difference?

    Also the 6770M with 512MB vs 6970M with 1GB, is it a noticeable difference?
    Thanks.
     
  2. NutsNGum macrumors 68030

    NutsNGum

    Joined:
    Jul 30, 2010
    Location:
    Glasgow, Scotland
    #2
    There's a pretty large difference in performance if you game. If you don't, I wouldn't bother upgrading.

    Geekbench

    http://www.primatelabs.ca/blog/2011/05/imac-benchmarks-mid-2011/

    Barefeats

    http://www.barefeats.com/imac11b.html

    Between the 2.7, 3.1 and 3.4, the 2.7 or 3.4 are the only ones I would really consider.

    The 3.1 seems to be quite a weak CPU relatively speaking, the 2.7 bests it in a number of instances due to its turbo frequency being higher and the 3.4 batters it to death.

    If you're really struggling to make a decision a 2.93 refurb is a great option and it's probably cheaper than all three of those candidates - it's still the second fastest iMac in terms of overall performance.
     

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