What RAM to buy to update new iMac launched today?

Discussion in 'iMac' started by spinstorm, Jun 5, 2017.

  1. tjwest macrumors newbie

    Joined:
    Aug 12, 2017
    #576
    What was your Benchmark scores? Do you have a before and after of your scores with the stock ram before and now the 32gb HyperX ram after
     
  2. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #577
    It stands to reason. Because the HyperX is overclocked, when it is used in combination with Apple's stock RAM all installed RAM clocks back to 2133MHz. That is if you can even get it to boot at all.

    HyperX on its own is not a problem.
     
  3. shinseiromeo macrumors member

    shinseiromeo

    Joined:
    Aug 8, 2017
    #578
    Anyone know the difference of the different RAM I posted earlier? I plan on buying some soon since I just got a new iMac and am a stickler on having matching pairs. Plus I have no need for anything more than 16GB hence why I prefer to just buy some matching OEM RAM.
     
  4. JohnnyB. macrumors newbie

    Joined:
    Aug 14, 2017
    Location:
    Netherlands
    #579
    Hi guys,

    FYI ;). As some people are saying in this thread they are using the HyperX with no problems, I can confirm from the HyperX twitter team, that the 32GB Kit is fully tested by them and thus compatible. They don't tested the new iMac with the 64GB Kit or two 32GB kits...so they confirmed at least that 32GB is compatible. They don't know yet if they will test the system with 64GB.

    Myself am not sure which RAM to buy...is anyone using 64GB of the HyperX and fully tested it, for example with memtest86? I've read that 64GB of Ballistix is working fine without any errors after doing a memtest...So any suggesting for me? Just buying the one which is cheapest? Or maybe the memory specific ram? Thanks!
     
  5. whcvip macrumors newbie

    whcvip

    Joined:
    Oct 29, 2015
    #580
    I have been happy with 64 GB Ballistix in my iMac, running great, and have tested them with memtest86 with no error. Video below is one I made after updating from 40GB to 64GB

     
  6. klky, Aug 16, 2017
    Last edited: Aug 16, 2017

    klky macrumors member

    klky

    Joined:
    Oct 30, 2015
    #581
    My crucial memory arrived a short while ago. Everything working smoothly as expected. Very pleased with the setup!
     
  7. Tjmckay4 macrumors member

    Joined:
    Apr 24, 2014
    Location:
    Perth, West Aus
    #582
    What version was this mate?
     
  8. klky macrumors member

    klky

    Joined:
    Oct 30, 2015
    #583

    I order two of these 32GB kits from Amazon. I paid USD 285.99 per kit. Just checked Amazon; seems the price has dropped to USD 260.99. Link: http://a.co/6naY2dB

    Crucial 32GB Kit (16GBx2) DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin for Mac - CT2K16G4S24AM
     
  9. Richard22b macrumors newbie

    Richard22b

    Joined:
    Aug 17, 2017
    #584
    Hi. So I just ordered 27" i7 8GB and as the rest want to upgrade. Reading all the pages on here I haven't seen a definite winner.
    Has anyone said yes go for this....

    In the runings:
    • HyperX Impact DDR4 CL14 2400MHz 32GB
    • Corsair Vengeance DDR4 CL16 2400MHz 32GB
    • Ballistix Sport LT DDR4 CL16 2400MHz 32GB

    In theory HyperX with the lower CL14 puts it slightly above the others.
     
  10. whcvip macrumors newbie

    whcvip

    Joined:
    Oct 29, 2015
    #585
    Corsair (Ballistix or standard) seems to be best, if you want to mix with standard Apple memory. HyperX is best with same memory, since they are overclocked and will run slower with Apple memory.
     
  11. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #586
    I agree with what whcvip wrote above.

    If you are out for the fastest performance and don't plan on continuing to use the Apple stock RAM then the Hyper-X is probably the best choice.

    Other than that, I recommend whichever is least expensive and readily available between the Corsair and Ballistix.
     
  12. Quash macrumors regular

    Joined:
    Sep 27, 2007
    #587
    I'm having stability problems running with 2 x 8gb Hyper-X kit (without original apple ram)
    The iMac just completely freezes up, about 1 or 2 times a day.

    I have done memtests but they don't report any problems.
    I don't have this problem if I just run with the apple memory.
    Anybody else has this?
     
  13. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #588
    What model of Hyper-X is it exactly? Freezing/crashing/kernel panics are often a symptom of bad RAM. Are the modules seated firmly?

    I recommend downloading Memtest86 and making a boot Flash drive. If you've got bad RAM chances are you will see errors.
     
  14. Richard22b macrumors newbie

    Richard22b

    Joined:
    Aug 17, 2017
    #589
    Ok so iMac arrived this morning and I did a before and after Geekbench on the RAM.
    iMac (Retina 5K, 27-inch, 2017)
    4.2 GHz Intel Core i7
    32 GB 2400 MHz DDR4 - HyperX 2 x 16GB
    Radeon Pro 580 8192 MB

    Before:
    Single Core - 5372
    Multi-Core - 17793

    After:
    Single Core - 5824
    Multi-Core - 20674

    A great increase in Multi-Core score.
     
  15. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #590
    Glad to hear you got your new RAM and nice scores. :)

    I posted my own benchmarks for the Ballistix a few pages back but just for comparison's sake, with only 32GB of the Crucial (2x16GB) installed in the same spec'd iMac:

    Single Core: 5818
    Multi-core: 20206

    The Hyper-X seems marginally faster but Geekbench is a synthetic benchmark so the results are probably close enough to call it a draw.
     
  16. Jack Burton, Aug 25, 2017
    Last edited: Aug 25, 2017

    Jack Burton macrumors 6502

    Jack Burton

    Joined:
    Feb 27, 2015
    #591
    Has anyone noticed any real world benefits in apps like FCP, Premiere, Cinema 4d, After Affects when running the Hyper X with the better CL rating?

    My PC just drove me to the brink of madness last night. I think I'm going to pull the trigger on a top end 27 inch iMac, expense be damned. I want to milk every bit of speed I can out of this machine.
     
  17. mpConroe macrumors member

    mpConroe

    Joined:
    Feb 14, 2017
    Location:
    Arbroath (UK) / Wroclaw (PL)
    #592
    I'm interested in upgrade memory too.
    I'm using my iMac for video editing, photo editing and gaming. Does 32GB do the job or better buy 64GB to max it out?
    I have installed stock 8GB RAM and I think that more RAM would be good for stuff I do but is the 64GB necessary?
    I don't want to regret that I bought 32GB only or 64GB if there will be not noticeable difference in efficiency.
     
  18. BigVern84 macrumors newbie

    BigVern84

    Joined:
    Aug 30, 2017
    #593
    It's been said on here a few times that non-certified crucial ram works fine in the new iMac. But is there any chance that non-certified ram might develop faults over time??? On the crucial website the Mac ram design does look different, so there must be a difference!? Or maybe they are just representative images anyway. Thanks!
     
  19. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #594
    The only difference in specifications to be noted in Crucial's "For iMac" parts is that they are lead-free and halogen-free which apparently conforms to Apple's sustainability standards but will have zero effect on their performance or reliability.
     
  20. mpConroe macrumors member

    mpConroe

    Joined:
    Feb 14, 2017
    Location:
    Arbroath (UK) / Wroclaw (PL)
    #595
    [​IMG]
    I just ordered Corsair DDR4 RAM for my iMac (2x16GB). It should arrive soon. 8GB it's not enough for video editing and gaming.
     
  21. Ken1222 macrumors newbie

    Joined:
    May 16, 2011
    Location:
    Havre de Grace, Md
    #596
    I am going to buy a 2017 5K with 8GB RAM, 512GB SSD. I am not a heavy duty user, just web surfing, mail, finance, word processing, youtube, fb, etc, but nonetheless want more RAM.

    I can upgrade to 16GB from Apple or buy 8GB kit from OWC or 16GB kit from Crucial. Is there a problem to mix Apple 2x4 with OWC 2x4 or Crucial 2x8? I have read posts that say no issue, and other posts say there is indeed an issue (even when the specs supposedly match).

    So what's the answer? I can upgrade to 16GB thru Apple EPP for $180. An extra 8GB is $90 from OWC. The Crucual 16GB is $152. Is it worth it to stay with Apple and know that there won't be any issues?

    Thanks in advance!
     
  22. colodane macrumors 6502a

    colodane

    Joined:
    Nov 11, 2012
    Location:
    Colorado
    #597
    My recommendation would be to purchase the 16 GB kit from Crucial. Just plug it into the two empty slots on your iMac to give you a total of 24 GB. It will work fine and you will have plenty of RAM for whatever you may need to do in the future.
     
  23. mpConroe, Sep 2, 2017
    Last edited: Sep 4, 2017

    mpConroe macrumors member

    mpConroe

    Joined:
    Feb 14, 2017
    Location:
    Arbroath (UK) / Wroclaw (PL)
    #598
    I just installed my new 32(2x16)GB from Corsair. Now I have 40GB of RAM memory in my new iMac. Installation was so easy and I don't have any problems. The machine boot up normally, showing all memory in all slots. I will be testing the system with video editing on macOS and gaming on Windows 10. Stay tuned for more!

    Update: As I said in another topic, my Corsair modules were faulty. I experienced crashed in macOS and Windows. I requested a refund from amazon. Old Corsairs are on the way back and the new one are on the way to me. I will tell if refund helped.
     
  24. EugW macrumors 68020

    EugW

    Joined:
    Jun 18, 2017
    #599
    I've always felt that Crucial was a top tier RAM brand whereas G.Skill and Corsair were 2nd tier, but also that RAM failure rates overall for these brands weren't uber high.

    I finally found a source that corroborates this, although the data is based out of France, and it is several years old now. Still, it's useful information. The numbers are from retail data.

    https://linustechtips.com/main/topi...ts-french-but-i-translated-nearly-everything/

    Average Failure rates:
    - Kingston 0,20% (vs 0,27% year before)
    - Crucial 0,39% (vs 0,30% year before)
    - G.Skill 0,95% (vs 1,01% year before)
    - Corsair 1,18% (vs 1,06% year before)

    Average Failure rates:
    - Kingston 0,20% (vs 0,20% before)
    - Crucial 0,46% (vs 0,39% before)
    - G.Skill 0,90% (vs 0,95% before)
    - Corsair 1,08% (vs 1,18% before)

    http://www.hardware.fr/articles/893-1/taux-retour-composants-8.html
    http://www.hardware.fr/articles/911-1/taux-retour-composants-9.html
     
  25. mpConroe macrumors member

    mpConroe

    Joined:
    Feb 14, 2017
    Location:
    Arbroath (UK) / Wroclaw (PL)
    #600
    Ok, finally my new Corsairs arrived. I tested them with Apple Diagnostics and everything is fine now. I have 40GB so my computer is prepared for heavy work I'm planning for him. Today we edited short video and it was rendered flawlessly. I hope it will be also so good in heavy projects. Now, it's evening and it's time to rest!
     

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