Full Spec 21,5 VS Base Model 27

Discussion in 'iMac' started by Guillaume.F, Sep 24, 2017.

?

? Which one would you recommend?

  1. Imac 21,5 4K I7 3,6 GHZ, 16 Go DR4, 512 Flash, Radeon Pro 560

    16.7%
  2. Imac 27 5K I5 3,4 GHZ, 16Go DDR4, 512 Flash, Radeon Pro 570

    83.3%
  1. Guillaume.F macrumors newbie

    Guillaume.F

    Joined:
    Sep 23, 2017
    Location:
    Quebec
    #1
    Hi everyone!
    This question has probably been asked before but I can't seem to be able to make a decision.

    To make a short story, I am saying goodbye to my old asus 15" laptop who is now old and outdated in terms of screen and specs.

    After thinking of going for another laptop, I have finally deciding to go Imac!

    The thing is that I can't decide if I should go 21,5 vs 27.

    I know some people might say it all depends on preferences, desk space, distance between you and the mac ( some people seems to find it too bif if they are too close, neck problem ) etc, but maybe one of you will make me decide.

    As for my usage, I am an amateur photographer who loves to edit on photoshop cc/ lightroom raw images and I am also starting to do a bit of video, probably going to edit 4K soon.

    Now moving to the real question.
    I've been sugested by people to upgrade quite a bit the specs of the 21,5 so if I would go down with that one, I would go for
    -Quad Core I7 3,6 GHZ
    16GO DDR4
    512Go Flash
    Radeon Pro 560 4GB

    Which in Quebec with the student discount would get me to $2595 +Tx

    Why I'm so confused, is that for not even 300$ more, I could get the bigger screen.

    However, that would be
    I5 3,4
    16Go DDR4
    512 Flash
    Radeon Pro 570 4G0
    $2799 + Tx

    Again there is a lot of other ways to customize them, but I kept in mind the 16Go DDR and the 512 SSD. I know I could get DDR cheaper on the 27 and upgrade it myself, so that might be an option too that would make me save 100$ maybe no more.

    However, let's say there is 200$ difference in total, should I be better going for the 21,5 with I7 and Radeon Pro 560, or would the 27 be worth it even if it is not I7 and the graphic card would be the base 570? Am I gonna see a big difference in term of specs?

    Again, I know I could get better like the Radeon Pro 575 or 580, and an I7, but then the price goes up quite a lot especially with the 15% taxes here...

    In store the 27" looks amazing and coming from a 15" that would be unreal, but I'm pretty sure the 21,5 would be a nice step as well if you recommend to go with the full spec porsche instead of the base ferrari.

    Let me know what you guys think and what would you do if you were me, or if I'm wrong and you would do something else :)


    Thanks a lot

    Cheers
     
  2. kschendel macrumors 65816

    Joined:
    Dec 9, 2014
    #2
    I think you'd be happier with the 27". The i7 will be a bit snappier than the i5, but unless you are making income from the machine and time is money, I don't see that it would be enough faster to outweigh the larger screen. I'd buy with a base 8 Gb RAM and add 16 Gb yourself (2x8), another plus for the 27".

    If you really can't decide, flip a coin and don't look back. You are absolutely not going to go wrong with either model.
     
  3. Guillaume.F thread starter macrumors newbie

    Guillaume.F

    Joined:
    Sep 23, 2017
    Location:
    Quebec
    #3
    Thanks for the advice! If I were to go for the 27 and ignore the fact that 21 is I7, would you go for the base model (I5 3,4 Turbo 3,8 Radeon Pro 570) or pay 200$ more to get I5 3,5 Turbo 4,1 Radeon Pro 575?
    Thanks a lot
     
  4. AFEPPL macrumors 68030

    AFEPPL

    Joined:
    Sep 30, 2014
    Location:
    England
    #4
    All depends on the space you have or it would to me.
    They are both quad cores so for normal things i doubt you see anything between them.

    Screen is better on 27 - 5K, but also means you need more GPU power to drive it
     
  5. kschendel macrumors 65816

    Joined:
    Dec 9, 2014
    #5
    The CPU spec difference is pretty minimal, barely 8%. Unfortunately I don't know enough about the GPU side of things to comment on the 570 vs 575 (I don't do photos or video). I would keep the $200 in my pocket but maybe someone here can tell you more definitively.
     
  6. Guillaume.F thread starter macrumors newbie

    Guillaume.F

    Joined:
    Sep 23, 2017
    Location:
    Quebec
    #6
    Allright thanks :)
    --- Post Merged, Sep 24, 2017 ---
    Yeah exactly, thanks for the advice!
    Wondering if there is a big difference between 570 & 575, as it might be more demanding to run 5K
     
  7. kindaichi81 macrumors member

    Joined:
    Nov 3, 2015
  8. AFEPPL macrumors 68030

    AFEPPL

    Joined:
    Sep 30, 2014
    Location:
    England
    #8
  9. gian8989 macrumors 6502

    Joined:
    Oct 23, 2015
    #9
    In the 27 you can easy upgrade the ram in the 21 you would have to open it.
    You are not a video editor so the i5 is enough.
    On the other hand if you work with photos you would be happier with the bigger screen of the 27.
     
  10. CaptRB macrumors 6502a

    CaptRB

    Joined:
    Oct 11, 2016
    Location:
    LA, California
    #10
    No one with any sense is about to suggest the 21.5 over the 27.

    You get what you pay for certainly applies. The ONLY reason to willingly choose the 21.5 is if you have some odd issue with space.


    R.
     
  11. EugW macrumors 603

    EugW

    Joined:
    Jun 18, 2017
    #11
    27" i5 7500 or 7600, with 8 GB RAM, plus 8-16 extra RAM from Crucial.
     
  12. kschendel macrumors 65816

    Joined:
    Dec 9, 2014
    #12
    Well, I could maybe imagine that if graphics response time were an overriding concern, the sheer number of pixels that you have to move on the 27 inch might dictate the smaller screen if you're doing high speed motion. Yes, I'm reaching. And cost, of course, if there's a hard constraint there.
     
  13. rjsounds macrumors member

    rjsounds

    Joined:
    Jul 3, 2017
    #13
    Agreed. I'd go with the 27", personally I'd go for the 575 upgrade in your shoes, and upgrade your own RAM. Keep in mind that this machine will likely last you a good 5+ years and still be a powerful machine then - the money is definitely being put to good use.

    I recently upgraded from my 2010 21.5" iMac to a brand new 27" 2017 iMac (top spec, mind you). I spent a little more but am really happy with this. My base model 2010 21.5" iMac lasted me 7 years. This new one I'd expect the same or even longer. You'll be happy with the extra power and screen size.
     
  14. Guillaume.F thread starter macrumors newbie

    Guillaume.F

    Joined:
    Sep 23, 2017
    Location:
    Quebec
    #14
    Thanks
    ;)
    --- Post Merged, Sep 24, 2017 ---
    Thanks ;)
    --- Post Merged, Sep 24, 2017 ---
    True! Probably have enough space for the 27 tho
    Thanks ;)
    --- Post Merged, Sep 24, 2017 ---
    Would be a good combination I think! Thanks
    --- Post Merged, Sep 24, 2017 ---
    Right that's nice to hear! Probably gonna do that, just wondering if the 300$ between i5 and i7 would be very worth it..
    thanks for the advice!
     
  15. EugW macrumors 603

    EugW

    Joined:
    Jun 18, 2017
    #15
    The performance of the i7 may be of benefit for you because it can be significantly faster than all of the i5 models, but also be aware that the i7 runs much hotter too. If you are sensitive to noise, then you might find the i7 annoying, because for some usage the fan will become audible much more quickly on the i7.

    For example for video encoding, my i7 7700K would push the fan to maximum within about 30-45 seconds. One test some of us at MacRumors tested had the i7 taking 10 minutes for that video, but with the fan loud for 9.5 minutes.

    OTOH, with my i5-7600, it took 12.5 minutes, with the only coming on audibly after around 10 minutes, and not even near maximum. Much more pleasant experience if you are sitting at that desk, but it did take 25% longer to do the encode.

    I had the i7 7700K for a week but then returned it and got the i5 7600. Truthfully though, most of the time the i7 was actually quiet, since I didn't push it that hard most of the time, but it did ramp up the fan from time to time. However, the 7600 stays silent pretty much all the time with my usage. I prefer the latter, despite giving up some performance.
     
  16. Guillaume.F thread starter macrumors newbie

    Guillaume.F

    Joined:
    Sep 23, 2017
    Location:
    Quebec
    #16
    Oh I see! That is something to think about too. Thanks for the info I had no idea! Will probably stay with the I5 then but go for the one with the Radeon Pro 575 so a slight upgrade on CPU and GPU! Don't mind waiting a bit more as It is not for my first job and time rendering video is not on a strict delay for me. Thanks!
     
  17. kschendel macrumors 65816

    Joined:
    Dec 9, 2014
    #17
    Check out the thread "The new iMac is a lot noisier!" on the iMac subforum. Lots to digest there, but my take on it is pretty much like EugW's, the i7 is non-trivially faster, and also non-trivially noisier when pushed. Pick your poison.
     
  18. CaptRB macrumors 6502a

    CaptRB

    Joined:
    Oct 11, 2016
    Location:
    LA, California
    #18
    CPU intensive tasks DO benefit from the i7. For the small extra cost, I really thing the i7 is a no brainer. You may be able to live without the 580 card and the SSD for now (You can swap out the drive later), but I've seen the i7 advantage in real time as I own both the new i7 and the i5 (I bought the 27" i5 for my 13 year old).

    As for noise, the i7 can kick up those fans, but so far it's only happened a few times. Running Photoshop and with many windows open along with a movie playing on a 2nd screen, I was surprised to hear the i7 make a good amount of fan noise. But it didn't last and wasn't anything to be bothered by. Just a non-issue unless you are OCD or something.

    Get the i7. That's the brains. Get the 27". That's the eyes.


    R.
     

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