Intel iris and iris pro

Discussion in 'MacBook Pro' started by Rchawks, Mar 15, 2014.

  1. Rchawks macrumors member

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    Jan 12, 2014
    #1
    I noticed the 13 inch rMBP has intel iris and the 15 inch has iris pro, what's the diff. Between the two?
     
  2. Graeme43 macrumors 6502a

    Graeme43

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    #2
    Iris Pro benches around speeds of Geforce 650M (the one previous MBPR had) :)
     
  3. yjchua95 macrumors 604

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    #3
    The Iris Pro 5200 has a 128MB fast eDRAM (L4) cache.

    The Iris 5100 doesn't have it.
     
  4. Rchawks thread starter macrumors member

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    Jan 12, 2014
    #4
    So the eDRAM would be used for faster processing of information under more graphic intensive programs, correct? Would this cross over to faster (smoother) video playback or more for spread sheets type programs?
     
  5. yjchua95 macrumors 604

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    #5
    More or less.

    Video playback wouldn't be really affected by the GPU; neither will having more spreadsheets open.
     
  6. Rchawks thread starter macrumors member

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    #6
    What situation would require the use of the pro version then? Or is the pro required to drive the larger screen on the 15 inch.
     
  7. leman macrumors 604

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    #7
    The 'pro' version is simply faster. That's all there is to it. It will be faster for computer games and some workflows which utilize the GPU. Also, some CPU algorithms could benefit from the larger cache. The reason why 13" doesn't have the pro graphics is because Intel does not have a dual-core CPU equipped with it.
     
  8. Rchawks thread starter macrumors member

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  9. shansoft macrumors 6502

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    #9
    It does not even come close to it. The closest it can get is probably certain heavily optimize software for Intel iGPU.
     
  10. yjchua95 macrumors 604

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    #10
    To be specific, Iris/Iris Pro is optimised for OpenCL software.

    Photoshop CC seems to work better on my Iris Pro compared to the GT750M, probably because ever since CS6, Adobe stuff are optimised for OpenCL.
     
  11. thekev macrumors 604

    thekev

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    #11
    That is incorrect. If you're running games, the 650m is still significantly faster. Don't just repeat everything you read on here.

    It should be about equal on either. Photoshop CS6 and CC do take advantage of it, but they don't scale well. There also isn't that great of a difference between the two for computation. Benchmarks lie.
     
  12. ha1o2surfer macrumors 6502

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    Sep 24, 2013
    #12
    You are exactly right, I'm surprised this is still the common thought.. a 650M is much more powerful when it comes to raw rendering.
     
  13. VanillaCracker macrumors 68030

    VanillaCracker

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    #13
    Iris Pro actually benches around the speed of the 640M. And regardless, the 640M is still a better choice for games. Once you go into resolutions higher than 1600x900 the frames for Iris Pro start to sink. The dGPU holds stronger even at higher resolutions.
     

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