Performance difference between the CPU options

Discussion in 'MacBook Pro' started by fyun89, Oct 29, 2016.

  1. fyun89 macrumors 6502

    Joined:
    Oct 3, 2014
    #1
    So, do you guys think there would be huge difference between the 2.6 CPU on 15 inch rMBP and 2.9?

    I currently have 2012 I7 2.7 rMBP, which was the highest option at the time. I bought this specifically because it had more L3 Cache (8 mb). But I've notice that the recent rMBPs CPU options have no difference in cache and the only difference is the frequency...

    If the price didn't go beyond 3000 mark, I'd probably maxed it.. but it kinda went out of my reach :(... What do you guys think? Worth the $300? or Nah?
     
  2. Zwhaler macrumors 603

    Zwhaler

    Joined:
    Jun 10, 2006
    #2
    For comparison, the previous-gen 15" MacBook pro with 2.5GHz i5 scored a 64-bit multicore Geekbench score of 13,306. The 2.8GHz scored 13,806. I anticipate the percentage difference this generation to be roughly equivalent (4% rounding up). Ask yourself it the extra heat and slightly reduced battery life is worth it. Rule of thumb is these upgrades typically provide somewhere around a 5% speed increase. In this example it was closer to 3.75%. It also depends how you use it. As someone who has edited professional video it would be worth it for me. But if you don't use the raw processing capability of a multi-threaded machine on a regular basis then it probably isn't.

    https://browser.primatelabs.com/mac-benchmarks
     
  3. viljamip, Oct 29, 2016
    Last edited: Oct 29, 2016

    viljamip macrumors regular

    Joined:
    Jan 22, 2016
    #3
    Actually the 2.6GHz has 6MB of L3 cache. 2.7 and 2.9 have 8MB. I haven't decided yet but I'll probably choose the 2.7GHz one. Single core performance (Geekbench) goes up by 8% on every step and multicore by about 10-11%. [​IMG]
     
  4. leman macrumors 604

    Joined:
    Oct 14, 2008
    #4
    The difference will be around 5%, so probably not worth it.
     
  5. laser71 macrumors regular

    Joined:
    Nov 29, 2010
    Location:
    Canada
    #5
    I originally was planning on maxing out everything - but with the price new price increase I couldn't justify $300USD + tax for the minor CPU bump. So I went with the 2.6, and maxed out the GPU instead.

    I keep hearing that "you won't notice it" unless you do rendering.
     
  6. viljamip macrumors regular

    Joined:
    Jan 22, 2016
    #6
    Yeah, I think that it is true. Maxing out your GPU is a lot more important if you are on a budget. 20% increse while rendering is significant if you do it all the time but I think it should be done on a desktop anyway.
     
  7. andreyush macrumors 6502

    andreyush

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    Oct 24, 2015
    #7
  8. leman macrumors 604

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    Oct 14, 2008
    #8
  9. andreyush macrumors 6502

    andreyush

    Joined:
    Oct 24, 2015
    #9
    Ok now i really love my macbook :p .. Maybe i will upgrade to a 2014 model next year. Cheap and practical.
     
  10. fyun89 thread starter macrumors 6502

    Joined:
    Oct 3, 2014
    #10
    I was hoping that I could opt for lower spec GPU and use Razer Core for GPU work.. But we dont have any confirmation that the Core will work with Macbook Pro.. Will wait for new info on this..
     
  11. lympero macrumors 6502a

    lympero

    Joined:
    Sep 1, 2008
    Location:
    Arta, Greece
    #11
    So the base 15" model for 2015 is more powerful than the base 2016 in terms of CPU?
    I don't understand why they didn't use i7-6770 instead if the crap 6700?
     
  12. viljamip macrumors regular

    Joined:
    Jan 22, 2016
    #12
    Intel's NUCs are the only computers that use the 6770. My guess is that manufacturing those turned out to be too difficult to make any profit so they scrapped the whole line of their high end graphics. At least Kabylake will not have any CPUs with Iris Pro. Not that we have new generation, more efficient dGPUs, competing with iGPUs got a lot more difficult. If Apple's A-series ARM chips continue to develop at the current pace, it won't bee too long until they catch up.
     

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