The model of i7

Discussion in 'MacBook Pro' started by dunnoguit, Jan 24, 2015.

  1. dunnoguit macrumors newbie

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    Apr 3, 2014
    #1
    Hi all, I'm wondering if anyone can provide the model of i7 on rMBP 15". I pretty much will buy rMBP to run virtualization as it's cheaper than iMac. Also how's the performance of those mobile version i7s? Thanks.:rolleyes:
     
  2. Cloudsurfer macrumors 65816

    Cloudsurfer

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    #2
    The base model rMBP has an i7-4770HQ. From the top of my head it scores around 12k in geekbench which makes it one if the more powerful macs out there.
     
  3. yjchua95 macrumors 604

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    #3
    2.2GHz i7-4770HQ, 2.5GHz i7-4870HQ and 2.8GHz i7-4980HQ.

    They perform almost identically to their desktop counterparts.

    That said, I'd recommend the variant with GT 750M. Iris Pro sometimes struggles when running Windows in a VM.
     
  4. maflynn Moderator

    maflynn

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    #4
    Depending on what you're running in VM as yjchua95 posted the dGPU model may be a better fit, but I think overall its a great machine to run VMs
     
  5. dunnoguit thread starter macrumors newbie

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    #5
    Can you explain how is that? Why struggles?:eek:
     
  6. leman macrumors 604

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    #6
    Just FYI: Wikipedia article on MacBook Pro has quite detailed hardware specs.
     
  7. snaky69 macrumors 603

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    #7
    Indeed. But a lot of people around here like to be spoon fed information.
     
  8. yjchua95 macrumors 604

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    #8
    Frame drops and throttling.

    When on Iris Pro only, all tasks are consolidated into a single die, causing higher temperatures.

    With the 750M activated, tasks are spread out across two chips, so temperatures are lower overall.

    When stress-testing with a utility called Macoh, I noticed that with the 750M disabled, throttling occurred pretty fast. Meanwhile, with the 750M enabled, throttling actually never occurred at all.

    The entire test lasted for around 15 minutes.
     
  9. dunnoguit thread starter macrumors newbie

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    #9
    Sorry, mac newbie here, so totally I don't know what you talking about. So you mean Iris pro can not handle vm very well? I'm just learning stuff like server etc...

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    As you start a thread, you can get a lot of thoughts from people which can not be found on wiki, just like this thread. Asking model is just part of it.
     
  10. Natzoo macrumors 65816

    Natzoo

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    #10
    Hi, i have the high-end 2013 15" retina, and i can run a geek bench and tell you what i get. specs below

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    i was reading through wikipedia and i found this. "Early and Late 2011 models reportedly suffer from manufacturing problems leading to overheating, graphical issues, and eventually complete GPU and logic board failure. A thread was opened on the Apple Support community[69] that reached more than 9,651 posts and 2,018,511 visits (Nov 2014). Users started a petition requesting a recall over the issue, which quickly surpassed 25,000 signatures. It has 26, 528 signatures (Nov 2014).[70] A similar but nonidentical issue affected iMac GPUs which were later recalled by Apple".

    How come apple did this, shouldn't they have been the bigger people and accepted fault?
     
  11. yjchua95 macrumors 604

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    #11


    Nope not really.
     
  12. dunnoguit thread starter macrumors newbie

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    #12
    Mmmmm...reconsidering iMac then.
     
  13. leman macrumors 604

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    #13
    Errm, I am running multiple VMs (mix of Linux and Windows) on my HD4000 without any problems. I am sure that if my puny integrated card can do it, the much faster Iris Pro will be able to do it as well.
     
  14. MagicBoy macrumors 68040

    MagicBoy

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    #14
    I run multiple VMs on my rMBP without any issues. Very powerful machine, and the PCIe SSD makes a massive difference for VM work.

    The Iris Pro vs nVidia argument makes a bit of sense in theory. Never seen an issue with it if I'm honest.
     
  15. yjchua95 macrumors 604

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    #15
    The much faster Iris 5100 on my 13" wasn't up to the job.

    The Iris Pro 5200 in my 15" was up to it for the most part, but temperatures went really high quickly and throttling occurred . Disabling the Iris Pro and enabling the 750M instead brought down the temperatures and throttling disappeared.

    Enabling the 750M means that all the graphical tasks won't have to be on the processor, so tasks are spread out across two chips, enabling better heat dissipation.
     
  16. maflynn Moderator

    maflynn

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    #16
    Actually having other people's opinions is a valuable tool in determining what would be a good fit. Walking up to an apple store and reading the specs can be done, but its not helping.
     
  17. leman macrumors 604

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    #17
    But that would be only the case if you are doing something quite GPU-intensive on your VMs. Of course, if you are going to do that, the dGPU will help, and I fully agree with your argumentation. However, I don't see what this argumentation has to do with VMs per se — it applies to any GPU-intensive tasks.
     
  18. yjchua95 macrumors 604

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    #18
    Yes, it does for any GPU intensive tasks.

    Running VMs may not be GPU intensive, but rather, CPU intensive. And that would also cause graphical throttling to occur under Iris Pro.

    I run Linux Mint, Windows Embedded 8.1 and Fedora simultaneously and it does take up a fair bit of CPU power, causing CPU temperatures to spike. To avoid graphical throttling, I enable the 750M to take the load off the Iris Pro so that even if CPU throttling occurs, graphical throttling doesn't happen.
     
  19. krabdb macrumors newbie

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    Apr 29, 2014
    #19
    Google this "macbook+pro+i7+2014+cpu"
     

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