I found a samsung 16gb ram stick nice price

Discussion in 'Mac Pro' started by philipma1957, Mar 7, 2011.

  1. philipma1957 macrumors 603

    philipma1957

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    #1
  2. linuxcooldude, Mar 7, 2011
    Last edited: Mar 7, 2011

    linuxcooldude macrumors 68020

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  3. beto2k7, Mar 7, 2011
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    beto2k7 macrumors 6502

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  4. philipma1957 thread starter macrumors 603

    philipma1957

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    #4
    reads 1 16gb stick for 444 dollars .

    the 2010 machines should support this stick
     
  5. beto2k7 macrumors 6502

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    #5
    I was answering linuxcooldude lol... sorry by the misunderstanding :p
    Fixed previous post.
     
  6. DeeEss, Mar 7, 2011
    Last edited: Mar 7, 2011

    DeeEss macrumors 6502a

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    #6
    So how do you think 3x8GB (1333MHz) and 1x16GB (1066MHz) would run together?
     
  7. alphaod macrumors Core

    alphaod

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    They would all run at 1066MHz
     
  8. philipma1957, Mar 7, 2011
    Last edited by a moderator: Jun 13, 2011

    philipma1957 thread starter macrumors 603

    philipma1957

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    #8
    thats cool it happens

    which may not be a bad thing if you really need 33gb ram to 38gb when you do your work.

    4 sticks of 8gb at 1333 would be slower if the system was pull 33gb to 38gb ram a lot. then the 40gb ram at 1066 speed.

    these sticks come in 1333 speed on the same site but the price was 633.
    and the latency is cl 9


    http://www.superbiiz.com/detail.php...-1333-16GB-ECC-REG-Samsung-Chip-Server-Memory



    with the 1066 sticks latency is cl 7

    i am also pretty sure that using the 1066 sticks with the hex 6 would work 48gb ram with that hex six would smoke even if it is 1066 and not 1333.
     
  9. DeeEss macrumors 6502a

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    #9
    Thanks for the info, it's a big jump in price for the 1333. Yeah I heard that the difference between 1066 and 1333 is unoticeable in the realworld. Do you think there would be any issues running the 8GB sticks with the 16GB sticks other than the obvs speed difference? I've only just bought the 24GB of RAM a couple months ago but I have one empty slot and 40GB of RAM would be amazing and a good size jump.

    I'm unfamiliar with the latecy numbers but guessing it's that it's the time it takes for the RAM to react to use?
     
  10. philipma1957 thread starter macrumors 603

    philipma1957

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    my understanding of the latency is access speed lower number quicker access. so I am thinking that 1066 sticks with a CL 7 latency are just about as fast as the 1333 sticks with CL 9 latency. at 444 a stick it is tempting to buy and test but i think I will hold out a bit for a better price.
     
  11. DeeEss macrumors 6502a

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    #11
    I agree. Im actually very tempted at that price. But I wonder what prices these sticks will drop to...
     
  12. philipma1957 thread starter macrumors 603

    philipma1957

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    #12
    I remember 4gb sticks selling for 400 a piece and if you found one for 300 you were happy.

    these 16gb were over 1000 each in dec.

    so maybe they drop to 200 a stick.
     
  13. raMANY macrumors newbie

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    #13
    Thanks for this thread + links.
    I see $373 for a single 16GB stick- hope price drops more in July.

    You guys know if these will work as good as the OCW memory..?
    I would get the OCW- but they sell min x3 for $1600 :eek:
    Can we install one, and buy more sticks later or do we have to get 3 sticks at once??

    I'm on MP 5,1 2.4GHz 8 Core "Westmere".
     
  14. CaoCao macrumors 6502a

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    #14
    The former
     
  15. philipma1957 thread starter macrumors 603

    philipma1957

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    you can buy one stick at a time but these must be matching sticks. so if you buy one now and they are not around in two months you would need to buy all new.
     
  16. raMANY, Jun 13, 2011
    Last edited: Jun 14, 2011

    raMANY macrumors newbie

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    #16
    Philip:
    Right on- will it have to be EXACT model number, or another Samsung 16GB stick?

    Edit:
    Since this is one of the only threads/info on this subject that I've found combing the internets, I'll go ahead and ask this since there might be someone else silently participating:
    Anyone out here that's had experience with these sticks or feedback ?
    Thanks!
     
  17. shardey macrumors 6502a

    shardey

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    #17
    I would like to know this as well.
     
  18. philipma1957 thread starter macrumors 603

    philipma1957

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  19. nanofrog macrumors G4

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    #19
    Correct.

    You cannot mix Registered memory with non-ECC or Unbuffered ECC memory.
     
  20. yauzers619 macrumors member

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    #20
    Phill, or anyone else, has anyone been able to confirm that the 16GB Samsung works in the MacPro 2010?

    Currently (july 4) it's $353 a pop and getting more compelling with every price drop.

    Also can I mix my 4GB OWC RAM work in conjunction with these Samsung modules?
     
  21. nanofrog macrumors G4

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    #21
    I'd be shocked if it didn't work, as Samsung is a major memory supplier (they actually make the memory chips found on a number of various DIMM's).

    Unfortunately, No. The 8GB sticks you're considering are Registered, and cannot be mixed with Unbuffered sticks at all (OWC 4GB sticks are Unbuffered). It won't work if you do (would have to pull either the Unbuffered or Registered sticks before the system would POST properly if you do mix them).

    BTW, OWC sells 8GB Registered sticks as well (offer kits), so go with whichever is cheaper.
     
  22. wonderspark macrumors 68030

    wonderspark

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    #22
    I don't know if it's true, but I was under the impression that larger HDDs would run hotter than smaller / earlier models. I imagine drive makers are always improving temp management with each leap forward, but it made me wonder:

    Do larger RAM sticks run any hotter than smaller sticks? If so, is it all more or less inconsequential with the airflow Mac Pro cases provide?
     
  23. blunti macrumors 6502a

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    #23
    if i was to put 2 of these in a 12 core 2010 MP how would I need to install them? 1 in the upper memory compartment and 1 in the lower? assuming no other RAMs are used.

    also how would a 12core perform with 1066mhz rams instead of 1333?


    Sent from my iPhone using Tapatalk
     
  24. nanofrog macrumors G4

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    #24
    Technically, Yes, larger sticks tend to consume more energy than smaller capacity sticks (more parts on the PCB = more power consumed = more power converted to heat). But this is on the specific case that there are in fact more memory chips on the DIMM.

    When you consider higher density memory chips however, this may not hold true (i.e. double the memory density, so you could get an 8GB stick with the same number of memory chips as a 4GB stick constructed of memory chips that are half the density of those used in the 8GB stick).

    Fortunately, DDR3 doesn't run as hot as Fully Buffered DDR2 used in 2006 - 2008 (hint: standard DDR3 sticks, including ECC variants, don't require a heat sink on it). Another thing to consider, is the DIMM slots do get decent airflow in the current MP's as well, so there's no need to worry about this. :)

    What system are you trying to put them in? :confused:

    I ask, as the 2009 and 2010's are the only systems that can use DDR3 RDIMM's (impression you do need DDR3, but need to be sure you're not running a 2006 - 2008), and the DIMM slots are located on the CPU tray (daughterboard), rather than the memory risers in previous Intel based MP's (2006 - 2008).

    If you are using a 2009/10, then stuff one in DIMM slot 1 and DIMM slot 2 (take a look here; Memory How-To .pdf from Apple).

    Please note, that you'll need to remove the OEM memory or any other that's not RDIMM (OEM = Unbuffered, aka UDIMM, as are the 4GB and smaller sticks from OWC).

    This will depend on the software you're using.

    But for most users, it won't matter, as there's not a lot of software that can actually utilize the memory bandwidth of the memory controllers in your system. Capacity will mean more for the user than the frequency it runs at.
     
  25. Umbongo macrumors 601

    Umbongo

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    If you use all 8 memory slots on a 12-core Mac Pro with registered memory then the maximum speed you can get is 1066MHz anyway due to how the memory controller works. Just worth a note I think. Doesn't happen with unbuffered DIMMs or if you only use 3 DIMMS per CPU.
     

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