Intel iris 540 vs 550

Discussion in 'MacBook Pro' started by johnparjr, Nov 9, 2016.

  1. johnparjr macrumors 6502a

    johnparjr

    Joined:
    May 10, 2005
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    Earth
    #1
    So is there a big difference between the 2 the non touch bar has the 540 and the touchbar has the 550
     
  2. Mathias Denichi macrumors 6502

    Mathias Denichi

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    Jun 21, 2013
    #2
  3. ninja2000 macrumors 6502

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    Dec 16, 2010
    #3
    Although on paper it seems like there is not much difference, the 15w 540 will never reach maximum clocks as they throttle like crazy. On my surface pro 4 i7 within a minute of cpu and gpu the core clocks drop to about 1.3ghz and gpu drops to about 600-700mhz
    For the first minute the performance is amazing when the clocks are at max. The iris 550 with 25w thermal budget will retain is stated clocks so the performance will be much better
     
  4. Sully macrumors regular

    Sully

    Joined:
    Oct 27, 2007
    #4

    What do you use to measure these speeds?
     
  5. PaulWog Suspended

    Joined:
    Jun 28, 2011
    #5
    As stated above, paper (theory) vs. practice (realistic benchmarks).

    This is why the new Macbook Pro is in a sad state. The 2016 Macbook Pro non-touch bar should have come in at $1300 (if they put a 1080p camera on it and kept magsafe, then $1400 might make sense, but still not $1500). The 2015 model should be $100-$150 less than the 2016 model. The touchbar model then would come in at $1600 or $1700.

    While I wish prices were $200 less, even $100 less would've been within reason (except that 8GB of RAM thing is almost as bad as the 128GB of storage was previously).
     
  6. ninja2000 macrumors 6502

    Joined:
    Dec 16, 2010
    #6
    I use intel XTU to monitor temps/clocks/throttling.
    I also undervolted the i7 15w to see if I can improve the clocks which does help but still nowhere near a 25w chip
     
  7. Mcdevidr macrumors 6502a

    Joined:
    Nov 27, 2013
    #7
    That throttling is on the Surface pro. I don't think the non touch bar throttles that bad. When I was playing a game for several hours the gpu portion alone was maxed out and pulling 15 watts by itself. I don't really ever max out the CPU even gaming under for more than a couple seconds here or there.
     
  8. ninja2000 macrumors 6502

    Joined:
    Dec 16, 2010
    #8
    Yes, the throttling is on the SP4 i7 but that doesn't make a big difference as it is the wattage not the device. The iris can pull over 15w as you have noticed. If you have very little CPU load then that is ok, but what I would notice is for the first minute I would get great performance as the CPU will allow over 20w for approximately a minute and then all of a sudden it is throttled back to 15 watts and that is when it drops the clocks down.

    What game were you playing? and were you monitoring clocks?
     
  9. Mcdevidr, Nov 10, 2016
    Last edited: Nov 10, 2016

    Mcdevidr macrumors 6502a

    Joined:
    Nov 27, 2013
    #9
    I played CIV VI for several hours at 1440x900 while swiping out of the game to do other things browse message in between turns. Wattage stayed at 22-23 the whole time. Temps were around 80 Celsius. I wasn't monitoring clocks on the CPU only wattage. The gpu was using roughly 13 watts that whole time the rest was the CPU it looked to Be using about 50-60% of CPU.
     
  10. Antairez macrumors regular

    Antairez

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    Mar 17, 2015
    #10
    macOS or Bootcamp? Average FPS? Game settings?
     
  11. Mcdevidr macrumors 6502a

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    Nov 27, 2013
    #11
    Mac OS. Game settings on minimum 1440x900. Don't know fps close to 30 I think. I mean it's not the best but it works. I can't stand the fan so I kept my Skylake i3 gtx 950 cheap system to stream from when at home. On the go the fan would be acceptable.

    I looked into an egpu but it's cheaper to keep my system.
     
  12. LGIR627 macrumors member

    Joined:
    Sep 9, 2016
    #12
    so, do we know for sure that the TB 550 is/will be significantly faster in real life than the non-TB 540? I have no interest in the actual touchbar but this issue is important to me
     
  13. djinn macrumors 68000

    djinn

    Joined:
    Oct 4, 2003
    #13
    LGIR627, did you decide on which model to get? I am in the same boat right now.
     

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