imac 27" 2011 ssd upgrade

Discussion in 'Apple Desktop Hardware/Software' started by Nukeyb0i, Jan 24, 2019.

  1. Nukeyb0i

    Nukeyb0i Member

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    My dads imac is starting to get slow so thought id upgrade it to an ssd for him, after a bit of google i had more questions than answers lol.(most info seems old aswell)

    Basically im not sure on this temp sensor thing, if i just swap out the stock hdd for a consumer ssd seems like itll work but cause the fans to spazz out due to the proprietary bs.

    I see some products from owc like cables and their own ssd's. But im unsure whats best.

    Can anybody point me in the right direction, whats the easiest approach?
     
  2. 3Toed

    3Toed Member

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    I did this several years ago by adding an OWC SSD but I left the original 1TB HDD in there. No sensor issues that way. Then I just cloned the OS from the HDD to the SSD.

    Slightly digressing here but one thing to be aware of with the 2011 iMacs is the video card in them (AMD 6970m) has a tendency to die so you might not want to spend too much on upgrading it since the machine could die at any moment. It could go on for years, too. It's just so random. Mine died for the 3rd time recently and I'm considering sending it to place to get re-balled properly rather than doing the bake trick again.
     
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  3. Sir Didymus

    Sir Didymus Member

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  4. digamma

    digamma Member

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    I know I'm late to the party here, but I just did this to a mid-2010 27" imac. Except I went down the path of creating a fusion drive and it's made a massive difference. I had to buy a cradle that takes a standard 2.5" ssd and replaces the optical drive. First thing to do was create a complete time machine backup as creating a fusion drive involves wiping both drives to create a single volume. The backup then gets restored after making the fusion drive volume. The longest part was backing up the gigabytes of stuff over a usb 2 connected external hdd. The great part about this, so far, is that it will store commonly used files on the ssd portion of the volume and the existing hdd is still used for bulk storage.
     
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  5. 2_stroke

    2_stroke Member

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    Why not just upgrade it to a cheap nvidia mxm
     
  6. aokman

    aokman Member

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    I dropped a crucial 2tb ssd in a 27” 2011 alone with an i7. The fan slowly ramps up but easily fixed with fan control :)
     
  7. greencamel65

    greencamel65 Member

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    Back when i was an Apple Tech i used to fix the fast fan issue where the sensor was integrated in the HDD with a transistor. Seemed to work out. My notes from the time are a bit vague but i'll paste them below:-

    Transistor 2N3904. Just remove the connector (side HD) and solder a 2N3904. Gray wire on E (Transistor) and black wire on BC (transistor).
     
  8. aokman

    aokman Member

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    The 27” seems to be different as there are no auxiliary wires, seems to read internal.
     
  9. alexc

    alexc Member

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    I did it a 18months ago or so to a 2011 (sold the 2011 as it wasn't officially supported by Mojave).

    Anyhow - it's not hard to do.

    I went with the whole kit and put three SSD drives in it. I purchased the cable with the sensor, SSD mounting hardware, extra SATA cable and replaced the DVD drive.

    All in all, it worked a treat. No issues. Easy enough to do if you are keen - you have to suction the screen off.

    Would I bother again? Hmm... probably not. I'd just run the software that handles the fan control. Especially as the 2011 is no longer supported.

    EDIT: Just read it's your Dad's iMac - in which case, get the cable. It's hassle free once installed. Get a cheap 3.5 to 2.5 mounting chases for a couple of dollars. Don't bother with the fancy newer tech one :)
     

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