The CPU inside 27" iMac?

Discussion in 'iMac' started by ilivelife, Dec 4, 2012.

  1. ilivelife macrumors member

    Jul 12, 2012
  2. ilivelife thread starter macrumors member

    Jul 12, 2012
  3. martinm0 macrumors 6502a

    Feb 27, 2010
    Anyone care to guess why the 21.5 i7 has a higher geekbench score than the 27 i7? I'm guessing RAM and/or Fusion Drive in the 21.5?
  4. JVo, Dec 4, 2012
    Last edited: Dec 4, 2012

    JVo macrumors newbie

    Nov 27, 2012
  5. xgman macrumors 601


    Aug 6, 2007
    That 27" score is old and pre-release. We will have to wait and see.
  6. alexdd macrumors member

    Oct 26, 2012
    the cpu in 21.5'' is slightly better than the 27'' 9504 vs 9464(3770s vs 3770)

  7. leman macrumors G3

    Oct 14, 2008
    This is correct.

    It it worth to upgrade? Probably not. What do you have more - time or money? The i7 will save you a few additional minutes per work day (at best).
  8. iamgalactic macrumors regular

    Apr 21, 2010
    so, what's that about then?

    so, the cost to upgrade the 2.9GHz i5 - 3.1GHz i7 on the 21" is the same as upgrading the 3.2GHz i5 - 3.4GHz i7.

    which means you're upgrading a more expensive processor in the 27" to a cheaper one than in the 21". for the same money.

    didn't spot that one when ordering the better faster processor on the BTO 27...
  9. nexusrule macrumors 6502

    Aug 11, 2012
    Main difference is i7 comes with hyperthreading, it means you have 4 core but 8 processes (sort of like 4 physical + 4 virtual cores). Final Cut probably make use of that, Photoshop use hypethreading for some operations, so if you use these operations can speed up things a bit.
  10. ilivelife thread starter macrumors member

    Jul 12, 2012
    I have the rMBP 2.3 Ghz i7 now. Will the iMac i5 3.2 Ghz be faster? Or is the i7 in my laptop faster? :)
  11. martinm0 macrumors 6502a

    Feb 27, 2010
    Depends on what you use your machine for. If you're doing video encoding at all, the i7 will actually be faster. In most cases, the rMBP will be faster in all aspects due to the i7 and SSD.


    Really? Checking Intel's site it looks like they are identical, outside of the 3.1 vs 3.4 initial speeds. Turbo Boost to 3.9, both have 8MB cache, etc. What makes the 3770s speedier?
  12. ilivelife thread starter macrumors member

    Jul 12, 2012
    So I should actually stay away from the iMac 27" unless I go for a i7?

    Because I have the rMBP 2.3 i7 with 16 gb ram now and it is quite fast @performance. If I go for the iMac then it should be because it is faster/has greater performance. :)

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