Upgradeability

Discussion in 'iMac' started by Kestrel452, Jan 12, 2011.

  1. Kestrel452 macrumors regular

    Joined:
    Jul 23, 2008
    #1
    What can you upgrade besides the RAM in the current iMacs? I'm under the impression you can upgrade the GPU in the 27" but not the 21.5"?
     
  2. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #2
    Without voiding the warranty, just the RAM. Voiding the warranty, HDD and RAM.

    Everything else is soldered in. Except the LCD or DVD Slot-loading device.
     
  3. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #3
    You don't void the warranty unless you take off the heatsinks with the "warranty voided if removed" stickers. That means you can replace the hard drive as you wish, and apple will have no means to void your warranty-- just means you have to replace the upgraded drive with the original hard drive if you ever have the machine serviced by apple. If you break your machine while trying to do it however, it's not above apple to blame any possible internal reconfigurations you've done as a means to void your warranty.

    The cpu and gpu are not soldered in. The cpu uses a default intel socket designed for lynnfield and clarkdale cpus, while the gpu is an mxm card. It's not recommended to replace either with anything other than what's already in the iMac lineup, however-- or better yet even at all.
     
  4. Kestrel452 thread starter macrumors regular

    Joined:
    Jul 23, 2008
    #4
    Hmmm, well, is there enough of a difference between the 5670 and 5750 to warrant the upgrade? I was planning on getting a 21.5 with the i5 but the 27" has a 1GB video card...
     
  5. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #5
    The main difference is the GDDR5 of 5750 (mobility 5850) allows for twice the memory bandwidth than the GDDR3 of the 5670 (mobility 5730)-- even though both cards have only 128 bit buses.

    According to benchmarks, the mobility 5730 is 60% the performance of mobility 5850.

    OWC actually has a program right now that can replace your gpu in the iMac for you, and I think they offer their own warranty. It's expensive however, because you're paying for the special mxm cards, and OWC's service. That service is only for 27 inch iMacs however, so it'd only really benefit late 2009 27 inch owners.
     
  6. Kestrel452 thread starter macrumors regular

    Joined:
    Jul 23, 2008
    #6
    So I guess I should save up the extra few hundred and just get their top of the line. Oh well, at least Sandy Bridge will have made its way in there by then.

    Although, why is their TOL model a lower Ghz than the rest?
     
  7. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #7
    If you can afford the wait, you should definitely consider saving up and getting a high end iMac when Apple refreshes their iMac lineup sometime later this year.
     
  8. 300D macrumors 65816

    300D

    Joined:
    May 2, 2009
    Location:
    Tulsa
    #8
    That is false information.
     

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