Results 1 to 9 of 9
  1. #1
    CPU Update for iMac 27 mid 2011

    Member Since
    Oct 16, 2007
    Posts
    3
    CPU Update for iMac 27 mid 2011
    my iMac 27 from mid. 2011 have a 3.1ghz i5 CPU.

    im not scared to open my iMac…

    but is it possible to upgrade the i5 to a Core™ i7-4960HQ haswell cpu?
    it use the same LGA2011 socket.

  2. #2
    CPU Update for iMac 27 mid 2011
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,209
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Not possible because the CPU like the GPU in a late model iMac is surface mounted to the logic board. In other words, it's soldered not socketed. And even if it was socketed, you could not swap the older CPU for the Haswell because that requires a whole new supporting chipset and power requirements. If you want a Haswell iMac, wait until next year and buy one when Apple starts to sell them.

  3. #3
    CPU Update for iMac 27 mid 2011
    Slydude's Avatar
    Member Since
    Nov 15, 2009
    Location
    North Louisiana, USA
    Posts
    8,541
    Specs:
    2.8 GHz MacBook Pro 10.10.2, 8 GB mem, iPhone 6+
    I meant to mention something about this on the videocast tonight. We had a few hiccups, which can be chalked up to an error on my part, and in the confusion I forgot to mention it.

    Thanks Chscag for a good explanation of why that processor switch would not work. You hit on a few things I had not considered. Here's consideration I can tell you from experience. Even when it is possible to change out the CPU the speed bump may not be as large as one would expect. I once changed the 300 Mhz G3 processor in a desktop Mac for a 500 MHZ G4 upgrade.

    Although I did see a bit of a speed bump it was not as much as I expected and probably not worth the cost. In fact, I did a memory and hard drive upgrade at the time and that might also have contributed to the performance increase.
    Sylvester Roque Former Contributing Editor About This Particular Macintosh

    "Got Time to breathe. You got time for music." Denver Pyle as Briscoe Darling

  4. #4
    CPU Update for iMac 27 mid 2011
    osxx's Avatar
    Member Since
    Jan 19, 2008
    Location
    houston texas
    Posts
    4,695
    Specs:
    09 MBP 8GB ram 500GB HD OS 10.9 32B iPad 4 32GB iPhone 5 iOs7 2TB TC Apple TV3
    Most of my gaming buddies don't build them anymore because a new processor usually requires a new logic board which will then need updated ram (higher MHz) and a better video card only to find out the power supply does not meet the demands so only the case remains hardly worth it.

  5. #5
    CPU Update for iMac 27 mid 2011
    Slydude's Avatar
    Member Since
    Nov 15, 2009
    Location
    North Louisiana, USA
    Posts
    8,541
    Specs:
    2.8 GHz MacBook Pro 10.10.2, 8 GB mem, iPhone 6+
    I think that is basically what I ran into. You don't like traveling 60 mph so you upgrade the engine in your car. Afterward you discover that no matter what engine you use the highway to work, the grocery store etc. won't handle speeds above 70 mph. Not much higher than the speed you started with. In computer terms the extra speed is lowed by the bus speed and speed of other components.
    Sylvester Roque Former Contributing Editor About This Particular Macintosh

    "Got Time to breathe. You got time for music." Denver Pyle as Briscoe Darling

  6. #6
    CPU Update for iMac 27 mid 2011

    Member Since
    Oct 16, 2007
    Posts
    3
    Quote Originally Posted by chscag View Post
    Not possible because the CPU like the GPU in a late model iMac is surface mounted to the logic board. .
    in the 2011 mid model..
    the cpu is not soiled on the logic board it can be easy removed…

    Ok if haswell not an option.. what is the lates i7 Cpu i can change it to?

  7. #7
    CPU Update for iMac 27 mid 2011
    Raz0rEdge's Avatar
    Member Since
    Jul 17, 2009
    Location
    MA
    Posts
    8,184
    Specs:
    27" i7 iMac, 24" iMac, 13" Macbook Air, iPhone 5 & 5S, iPod Nano 7th Gen, iPad 2 16GB WiFi, iPad 3
    It's not soiled..but it is certainly soldered.

    If you see the 2011 21.5" Teardown at iFixit and the logicboard picture, the orange box is the CPU. The CPUs have a lot of pins and aren't easily replicaed by hand and if you COULD do it, you'd have to stick with the same family but perhaps the i7 version instead of the i5. As stated by others, you couldn't jump families since it isn't just the socket that is the limiting factor..
    --
    Regards
    ...Ashwin



    Be sure to read the Community Guidelines | The more information you provide, the better answers you get, remember GIGO.

  8. #8
    CPU Update for iMac 27 mid 2011
    Stretch's Avatar
    Member Since
    Jan 13, 2007
    Location
    Central New York
    Posts
    4,773
    Specs:
    15in i7 MacBook Pro, 8GB RAM, 120GB SSD, 500GB HD
    Quote Originally Posted by Raz0rEdge View Post
    It's not soiled..but it is certainly soldered.

    If you see the 2011 21.5" Teardown at iFixit and the logicboard picture, the orange box is the CPU. The CPUs have a lot of pins and aren't easily replicaed by hand and if you COULD do it, you'd have to stick with the same family but perhaps the i7 version instead of the i5. As stated by others, you couldn't jump families since it isn't just the socket that is the limiting factor..
    Razor, in that image the CPU definitely looks socketed, and if that's the case it could be changed if desired. Whether it would make a noticable difference is another question.
    Blog and Photo Gallery: http://philolin.me/

    Currently running OS X 10.10

  9. #9
    CPU Update for iMac 27 mid 2011
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    20,025
    Specs:
    iMac i5 2.7GHz, 16GB memory, OS 10.10.5
    Well the 2010 model can be upgraded so maybe the 2011 as well and Op asking about 27" rather than 21.5" if that makes any difference:-


    Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Mid 2011 iMac memory
    By tape in forum OS X - Operating System
    Replies: 3
    Last Post: 02-07-2014, 01:55 PM
  2. bios update for 16gb on 2011 (mid) MBP ?
    By viezu in forum Apple Notebooks
    Replies: 1
    Last Post: 12-29-2011, 02:07 PM
  3. "Normal" CPU operating temperature for Mac Mini mid 2011?
    By xpscapable in forum Apple Desktops
    Replies: 1
    Last Post: 12-25-2011, 06:43 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •