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Modelo A1419 / Finales de 2012 / Core i5 de 2,9 y 3,2 GHz o Procesador Core i7 de 3,4 GHz, ID iMac13,2

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How to replace SSD/HD's in the 2012 27" iMac?

I'm hoping you guys can do a tear down at some stage as I want to see what's involved in getting to the hard-drives. I'm not confident it's exactly the same inside as the 21" teardown you've done.

Thanks in advance!

db

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I am also planning such surgery ... I have just received mine today

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Even with the thin display it is glued to the body. Which takes a heat gun and a bit of force to get that display off. With Thunderbolt and USB 3.0 as interface options I would highly recommend buying an external drive instead of trying to open your iMac. It would be a shame to pay a premium for the computer to break the (probably) expensive display.

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You would need to remove the display, but is not recommendable because is very thin, between 3 and 4 mm and that make very very fragile, it's like handling a 27" glass with 4 mm thick

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Usb 3.0 could be an option BUT The new iMacs more likely have a SATA III connector in their motherboard and that's 6 Gbit/s - 600 MB/s; USB 3.0 is 5 Gbps so there is a "theoretical and practical" loss of speed.

Ideally connecting a good SSD via Thunderbolt would allow to reach great speeds BUT the only thunderbolt adapter I know of that can allow that would be the Seagate GoFlex Desk 3.5" Thunderbolt Adapter (STAE122); unfortunately it appears that even this GoFlex adapter has a SATA II connector which would take the whole setup a step back in terms of speed.

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I just bought a Sandisk Extreme SATA III SSD, 240GB. As soon as my iTunes folder finishes to be backed up to another HD, I will be performing the switch from the internal HD (3TB) and install Mountain Lion on the SSD via Thunderbolt. Will post the results (speed and performances).

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Done.

I set it all up and now it's running.

iMac 27" 2012, 3.4GHz i7 Quad Core Processor, 16GB RAM, 3TB Internal HD.

I connected a SanDisk Extreme SSD 240GB to the sata connector of a Seagate GoFlex Desk 3.5" Thunderbolt Adapter (STAE122).

I have over 260MB/s writing speeds and over 370MB/s in reading speeds.

Fast is an understatement but not too happy as I could achieve much faster speeds. I have a funny feeling the culprit (bottleneck) is the STAE122 as it more likely has a SATA II connector instead of a SATA III.

Nevertheless, it's a perfectly fine setup for me and lightning fast.

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it is faster the internal fusion drive than your solution.

I will try with my pegasus R4 thunderbolt drive or you can use the lacie thunderbolt that use 2x2,5 hdd, simply take out normal hdd and replace them with 2x ssd

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I brought a Little Big Disk 1TB Thunderbolt(LBD) and installed 2 128GB SSD(crucial M4 - $106 each) and have my OS on that. I also use the Pegasus R4 for my workflow files. I have tried the SSD's in the pegasus and while fast my boot times were still around 45 seconds. I get 15 seconds with the OS on the SSD's via the Thunderbolt LBD. I didn't go with the LBD SSD stock option because of the speeds. Using my own SSD's in the 1TB LBD got me faster speeds.

LBD 2-128GB SSD is 409/598 write/read

Pegasus R4 4-1TB in raid 0 for 4TB 560/452 write/read

Pegasus R4 2-2TB in raid 0 for 2TB 380/235 write/read

LBD 1TB stock 213/224

LBD SSD stock 333/475

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There are some useful information in this web page:

http://www.newsmth.net/nForum/#!article/...

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In Chinese, maybe you could have a try with Google Chrome or Google Translate.

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After talking with the author of previous post in newsmth, he gave me another link for the details of his work, adding the 2nd(ssd) drive to his 27" iMac,

http://www.chiphell.com/thread-701062-1-...

Hope it helps. And he also said he is too busy recently, and not sure whether he could finish a good article for iFixit.

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I have tried to translate that. I'm not quite sure about the most risky part, removing the screen. He sais he doesn't use a heatgun? That the glue is specially designed with air bubble in the middle that cut both sides? Something.. (google translate)

Hoping someone could tare that rule down for me, so I am sure that I know what I'm doing :P

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