You know that feeling of accomplishment when you’ve overcome a huge obstacle and you can’t wait to tell the entire world about it? Well, we’ve got it; we’ve overcome the whole “fan/drive sensor” problem found when installing a non-factory drive in the 2011 iMacs. That means we can now officially announce the OWC Turnkey Program for the 2011 iMacs.
We’re also going to one-up the 2010 program by including upgrade options for both the 21.5″ and the 27″ 2011 iMac models.
That drive sensor thing was a big hurdle. Apple uses a custom firmware that sends temperature info in a non-standard fashion. Unfortunately, unless the drive has this special firmware, the fans spin at full speed. We wanted a solution that would be a long-term solution that wasn’t dependent on a software patch or hack. Though those sorts of fixes can be temporarily effective, we didn’t want to rely on them for two reasons:
- they put overhead on the bus which can reduce performance
- a software solution can can fail or be rendered non-functional by a wide variety of actions (software updates, system reinstalls, etc.) which could risk the hard drive and the data contained on it.
So, we went another route and developed a hardware solution that interfaces accurately and properly with what can be viewed as a frustratingly unique temperature data monitoring method by Apple. While our solution adds a little bit to the cost of upgrading the iMac’s hard drives, we feel that cost is more than offset by the advantages it has over software solutions.
While our hard drive solution is proprietary (read as: we’re not gonna tell you how we did it), we can guarantee that—unlike other “solutions” out there—it’s 100% compatible with Apple Hardware Test and maintain proper fan operation.

The 2011 iMac Turnkey Program will allow you to custom configure and have OWC professionally install:
- Up to three* OWC 6G Solid State Drives up to 480GB each.
We all know Solid State Drives are the way to go if you’re looking for the best performance, and our Turnkey Program is the best price/performance deal out there. To get an Apple SSD, it’ll cost an even $600 for a 256GB that runs at 3.0GB/s; for $30 less we can install a comparably-sized OWC 6G SSD in there, which has shown nearly TWICE the performance of Apple’s SSDs in similar setups. Want crazy fast performance with two SSDs? While we don’t offer a RAID configuration as a Program option, you can create a software RAID using Apple’s Disk Utility or 3rd party software such as SoftRaid. By having us install two OWC Mercury EXTREME Pro 6G SSDs of the same capacity and then self creating a RAID-0 Stripe, you can have data rates of nearly 1GB/s (1000MB/s).
- A Higher-Capacity Hard Drive—Up to 3.0TB
On most models, the largest drive you can get from the factory is 2.0TB; with the entry-level model, your only option is a paltry 500GB! Just because you don’t necessarily need all the processor horsepower the “higher” models offer, it doesn’t mean you don’t have similar storage needs – an 80,000 song iTunes library takes up the same amount of space, regardless of how fast your processor is. And even if you are getting one of the “bigger” versions, doesn’t a 3.0TB hard drive sound a heck of a lot better than a 2.0TB drive? Of course it does. Better to get it right away than not have it down the line – nobody ever regretted getting too big a hard drive.
- OWC Memory Upgrades up to 32GB.
If there’s one thing that we can claim with authority, its that adding more memory to your Mac makes a significant difference to performance; we’ve got pages of benchmarks to back it up. Unfortunately, these iMacs still come with a measly 4GB of RAM from the factory. Sure, you can bump up the RAM on most models to 16GB (that entry-model only has a 8GB upgrade available from the factory), but they gouge you there, too – that 16GB upgrade will cost you $600. That same upgrade from OWC will run you $160 (a little better than a quarter of the cost). You know what, though? We can go higher, too - try a whopping 32GB! While installing RAM in the iMac is easy to do yourself, it doesn’t hurt to have us do it “while we’re in there.”
- An eSATA port
With the 2011 iMacs sporting Thunderbolt ports, you may wonder why you would even bother getting an eSATA port. The answer is really simple: Thunderbolt devices just aren’t widely available yet. And they do come at a premium price. On the other hand, eSATA devices are fairly ubiquitous, reliable, and fast enough for all but the most demanding end user’s needs. We need to warn you, though; while all the other upgrades can be done for both the 21.5″ and the 27″ iMacs, the eSATA port can only be added to the 27″ model…there’s just not enough room in the 21.5″ model.
With the 2011 iMac Turnkey program, you can buy a base-model iMac, send it to us, and in 48 hours have it upgraded to experience the 550MB/s+ speed of an OWC Mercury EXTREME 6G SSD, storage capacities up to six times higher than Apple’s offerings, and up to four times the amount of memory available from the factory (along with the performance benefits that come with those increases).
Speaking of price, we think our service is priced very comparably to rates charged just for labor by professional certified technicians. Check out the video below for the 2010 iMac upgrades, and you’ll see why we’d recommend professional installation; the 2011 models are pretty much the same, and we plan on creating a similar video for the 2011 models
However, for those of you that may “know someone who knows someone,” we’re planning to offer 3TB Hard Drive Kits and SSD Bay Kits that will allow an Apple Certified technician to install upgrades in your iMac without having to send it to us. More on that as things develop so again, just keep revisiting the Blog to learn about those details.
*Installing a third OWC SSD requires that the factory SDHC Memory Card Reader be disabled. When choosing this option, OWC includes an external OWC 68-in-1 Media Reader/Writer that offers the same functionality as the factory card reader as well as supporting additional card types including Compact Flash, SmartMedia, MMC, and more


I have read through a number of your blog post regarding the installation of a replacement HDD in a mid 2011 27″ i7 iMac. From my reading, there is a solution to replacing a failed hard drive with a similar unit and passing AHT, etc with no fan rev, but we have to send the unit to OWC to have the work done? As your solution is proprietary?
I would like to buy a hard drive (from you), the special tools needed (from you) and any extra hardware (special cables etc.) to install the replacement hard drive and have it work as it did when new. Is that possible?
I believe the blog post you’re looking for is here:
http://blog.macsales.com/16878-imac-hard-drive-upgradeability-expanded
And the DIY Kit for replacing the main hard drive in that machine can be found here:
http://eshop.macsales.com/item/OWC/DIYIM27HDD11/
Yeah, I saw that, sorry.
The way the post read it seemed like you could only have it done Turnkey. Clearly not. I purchased the parts, on their way soon. Thanks for the quick reply.
I’ve got a 27″ 2011 iMac with a bad optical drive. Could that space and internal connection be used for an SSD?
We do offer our Data Doubler that would work to replace the optical drive in the 2011 model to swap the optical drive with an SSD.
Absolutely! Our OWC Internal SSD DIY Kit For All Apple 27″ iMac 2011 Models includes everything you need to make that swap yourself. We even created an installation video to show you how to do it.
And if after watching the video, you decide the installation just isn’t for you – our turnkey program has been setup to do that install for you.
27-inch, Late 2009. Mac11,1. Intel Core i7. 2.8 GHz. 16 GB
I want to add a SDD drive to my existing 1gig drive.
how much would it cost to do this turnkey?
We do not have a turnkey program setup for that model, however, if you contact our Sales Team they would be more than happy to provide a price quote.
Why did you stop offering the turnkey upgrades on the Late 2009 27″ iMac ?
We didn’t stop. Our first turnkey program for the iMac was with the 27″ 2010 model.
I have an iMac11,1 are there any SSD options available through your turnkey program for this mac that include keeping the original HD?
The Late 2009 iMac11,1 models do not have the additional SATA port (nor the internal room) to install a secondary drive.
So I’m limited to just replacing the original HD with an SSD?
Correct. But you can always add additional storage space via an external drive, too.
Or we do offer a Data Doubler for that model: http://eshop.macsales.com/item/OWC/DDMMCL0GB/ to swap the optical drive with an SSD.
Ok, can I boot off the SSD in the optical drive/data doubler then?
Absolutely, once you’ve installed (or transferred) you OS to the SSD, simply go to System Prefereces > Startup Disk and choose the SSD as the boot drive.
For some more information on optimizing the dual-drive system, see our TechKNOWlogy video on setting up your Mac so that the OS runs off the faster (but probably smaller) SSD while seamlessly keeping your data files on the (probably larger) original drive.
One last question, is this something OWC can install for me?
Sure, OWC offers installation services for nearly every Mac model – simply contact our Sales department at 1(800)275-4576, via email, or live chat for pricing and to arrange the installation.
I’ve got a 2011 27″ 3.1 GHz iMac, is it possible to upgrade the processor to an i7?
Also, if I install an SSD, how do I get my OS and all my apps over to it?
And, will these upgrades work on EU machines? (I dunno, we use different electrical standards over here, maybe it’s different?)
The iMac processor is not upgradeable.
For setting up your SSD/HDD dual drive setup, check out our tutorial on the OWC Blog.
And while the electrical standards are different, only the power cable itself changes by country. The internal components are exactly the same.
I have a 2010 27″ iMac with 2 hard drives (256 SSD and 1TB SATA), and I would really like an eSATA port because I am stuck with FW800 and USB 2.0 with this machine.
What are my options?
The eSATA port can still be added through the 2010 iMac Turnkey program:
http://eshop.macsales.com/shop/turnkey/iMac_2010_27
Hello. I have a 2010 21.5″ iMac. The disc utility says the hard drive is failing, cannot be reparied, and should be replaced.
First, it is unclear if you are offering this service on the 2010 21.5″ iMac’s ?
If you are, can this service take place and simultaneously then fix by reparing the failing stock hard drive?
Also, once I get it back, how do I load the OS? I have the original installation disc. I also have everything on an OWC 2TB external hard drive via time machine.
Thank you
No, we do not offer the Turnkey service on the 2010 21.5″ model iMac as it does not have the additional SATA port or space to install the SSD that the 27″ version has available.
Is there any reason the DIY SSD install shouldn´t work on late 2009 27″ iMacs (ID:11,1)? Or, can the main HD be swapped for an SSD?
The 2009 iMac does not have the additional SATA port to install a second SSD.
Does that mean that I can swap the main HD for an SSD?
The article states, “we’re planning to offer 3TB Hard Drive Kits and SSD Bay Kits that will allow an Apple Certified technician to install upgrades in your iMac without having to send it to us.” In searching the DIY section I only see an option for adding an SSD. Instead, I am interested in replacing my stock 1TB with a 3 or 4TB HDD without the “fan issue”. Could you please let me know what my options are for this type of DIY? I am confident in doing it myself, I just worry about the fan issue. Thanks!
We started with the additional SSD DIY install. Other options are still in the works, but we do not have an ETA on when they may be available yet.
It’s been almost a year since this article… Can I sign up for an email notification for when they become available?
Best way to be notified is to keep an eye on our blog. As new products are released, they are always announced here first.
Perfect! I’ll keep checking back here for another year. Should work out great!
Are the DIY kits out yet?
The DIY kits are available for adding an internal SSD.
So if I send my base mid 2011imac in for a 120gb ssd. Will the os be transferred over to, and boot from the ssd? Also does the existing hdd turn into optional storage at this point?
Thanks
Correct, The Operating System will be installed on the smallest capacity drive with the larger drive reserved for storage. Upon receipt, you can change this and format your drives to suit your needs, however, for most, this setup is optimum.
“While our hard drive solution is proprietary (read as: we’re not gonna tell you how we did it),”
You just used the cBreeze external temp sensor developed by Gravis.de. Isn’t it?
The cBreeze by Gravis is absolutely a great solution for the experienced Tech or adventurous DIYer who wanted is comfortable with opening their iMac.
Any update on the turnkey program for install by Apple Authorized Service Providers?
We don’t have an exact ETA at this time. When we do, the availability will be announced here on the OWC Blog first.
I am really interested in sending my iMac to you guys to upgrade. I have 2 questions.
If i have a 1TB hard drive 2011 27 i7 model is it possible to add 2 SSD drives on that?
and
After I purchase what I would want on it. I just ship it to your address or will I get some kind of email telling me what to do?
Thanks again
Joe
Yes, that machine can accept up to 3 SSDs (or as you are requesting the original hard drive plus two additional internal SSDs) via our OWC Upgrade Program for the Apple iMac 2011.
There are options where you can have the machine drop-shipped directly from where you purchase it from, or we can send you a shipping label (for locations in the Continental US) to send it in to us post-purchase.
iMac 2011 upgrade program FAQs
How soon will you have the DIY hard drive replacement kits? I think most of us go to OWC to do our own installations with your fantastic video tutorials. I look forward to not being held hostage with Apple’s proprietary tricks, it’s pathetic that we would have to rely on them to swap out an HD.
Thanks!
We don’t have an exact ETA at this time. When we do, the availability will be announced here on the OWC Blog first.
Been waiting since this initial announcement for any news about the DIY kit. Any updates on that?
Love your stuff,
Thanks for all you do for the Mac community!
No word yet, but stay tuned to the OWC Blog as when any new product is launched, it will be announced here first.
So you wrote “for those of you that may “know someone who knows someone,” we’re planning to offer 3TB Hard Drive Kits and SSD Bay Kits” – any word on when/if this will happen? I’ve got a GREAT local apple-certified tech 2 blocks away, would really prefer to drop the iMac off with her (or have her do it at my office) than to pay shipping AND wait over a week :(
Haven’t heard anything on the release yet. Once we do, rest assured you’ll hear it here on the OWC blog first.
Do we get to keep our old hard drive that you take out of the machine?
How much warranty coverage will we get if the machine doesn’t have a factory warranty? I ask because I plan to wait at least a year before I upgrade.
Yes, you get to keep your old drive.
For machines with no original factory warranty coverage, the included and optional, extended warranties will only apply to the components being installed by OWC.
For more detailed information about the program, please see the FAQ page.
I just bought my iMAC 27″ 2011 and apple says it can only hold 16 mb of memory. reading this board, are you saying it can actually hold 32 mb?
That is correct. The iMac (27-inch Mid 2011) Model ID: iMac12,2 has been MaxRAM Certified for up to 32GB of memory.
No support for the Late 2009 27-inch iMacs? :(
i am from Singapore and shipping an iMac to the United States for the turnkey program is almost not possible given the fact that it will be very expensive,i just hope that OWC will release a kit that is user upgradeable and all i need is to replace the stock HDD with an OWC SSD.
I’m not clear about warranty issues in the 2011 iMac turnkey program. You say, “OWC will assist/fulfill the iMac factory warranty, as well parts and labor, for all OWC installed enhancements.” When you add an OWC SSD and RAM to a 21.5″ 2.7GHz iMac (with only the Apple 1TB HDD), does that void Apple’s own 1-year warranty or 3-year AppleCare Protection Plan?
Nothing being performed should void your warranty entirely. However, OWC cannot guarantee the actions of the original manufacturer. OWC suggests that consumers familiarize themselves with their consumer rights per US law and regulation. The Federal Trade Commission has very specific laws that provide consumer warranty protection.
The OWC Turnkey Upgrade Program comes with up to a 1-Year Parts & Labor Warranty. This Warranty includes:
Labor to repair or replace upgrade program components;
The upgrade program components themselves; and
All original factory components still installed in the iMac with the exception of the factory installed SSD.**
Length of Standard Limited Warranty is based on time remaining on original iMac factory warranty. Parts and labor to replace or repair defective hardware, factory original or upgrade program components, is covered until the conclusion of the original factory warranty. (Ex. An iMac purchased on 8/1/2011 has factory warranty coverage until 7/31/2012. If this iMac participates in the iMac Upgrade Program on 10/31/2011, the customer will receive 9 months of coverage under the Standard Limited Warranty.)
**Original, factory components will only be covered on factory sealed iMacs. Any iMac arriving where the machine itself has been opened by a third party or contains non-factory installed components, will receive warranty coverage on the OWC installed components only.
For further details see the OWC Turnkey Upgrade Program FAQ
Should an issue arise during the coverage period that requires the iMac to be sent in to OWC for service, the customer is responsible for any and all shipping fees of their iMac to OWC. OWC covers the cost of Ground shipping the iMac back to customers located within the 48 contiguous United States. Should the return shipping address reside outside of the 48 contiguous United States, the customer is responsible for the return shipping fees.
If you have this done on a warranty machine and bring it to an Apple store they will not work on the machine till the original parts are put back. You’re warranty isn’t technically voided but Apple will often refuse to warranty machines that do not have all the original parts, this includes ram.
For upgrading a 27” 2011 iMac the OWC Turnkey Upgrade Program page says: (SSDs pre-installed from factory not recommended). For OWC to add a drive in the Apple SSD position you will need to provide the mounting bracket and cables. I was wondering what OWC’s solution is for mounting an SSD behind behind the optical drive or elsewhere. For an upgrade I am planning for 2 480 GB SSDs and 24GB of memory.
Our multiple SSD mounting method is a proprietary process performed by our trained technicians which, unfortunately, we can’t discuss.
It’s pretty cool though. :-)
Hi i have a 2009/2010 MAC PRO 2x 2.26GHz 8core and want to change the Processor to a 2.66ghz or 2.93ghz or sell it and buy a new one. any advice will fine Thanks
We do offer a Mac Pro Upgrade Program for updating that processor.
Excellent news!
Can you tell us an ETA for the upgrade kit availability?
Thanks
“More on that as things develop so again, just keep revisiting the Blog to learn about those details.”
This is amazing news. Way to go OWC!
I’m interested in adding two SSDs, but leaving my HD alone. I read on the order form and in the blog that this will take my card reader out of commission, but I wanted ask if this also removes the optical drive. If I get 2 SSDs and a HD, do I still have a working optical drive?
Cheers,
Bailey
While it takes your card reader “out of commission”, it does keep your optical drive intact and working internally. Also. we do include a more functional external card reader…so really you don’t lose anything and gain big in terms of # of internal drives, speed of such, and a wider format card reader. A “trifecta” of upgrade goodness!
I’d love to see a benchmark for 2 SATA 3 SSDs running via software RAID. Nearly 1 GB per sec is amazing.
hope you guys will release the self install SSD kit with mounting cage/cables as it is will cost way too much to ship to US and back to AUS.
This is great! But I can’t use turnkey programme, because I live in eastern Europe.
So, I am interested in buying hdd kit with mount bay panel.
When are you planing to sell those?
Thanks!
We do offer this Turnkey Program worldwide, but please note additional shipping charges will apply for upgrades shipping to Alaska, Hawaii, or international locations. You can view estimated shipping costs with your checkout cart.
As far as the DIY kits are concerned, that was addressed in the post already… “More on that as things develop so again, just keep revisiting the Blog to learn about those details.”
Had a look at the shipping costs. Shipping costs for one way alone to the country I am were over a few hundred dollars. At that price it’d be far better to get a local tech to install a kit than to get you guys to install it directly.
Placed my order today for a 27″ i7 with 6Gb/s eSATA, 240GB Mercury Extreme Pro 6G SSD, 3TB HDD and 16GB RAM. Thanks for all the hard work getting this program going!
Sweet Ken! You may just be our first order! Thanks for your trust and patience!
After some thought, I decided to go with the 480GB Mercury Extreme instead of the 240GB. Even though I don’t really need it now, I know I would have regretted it later if I didn’t get the largest capacity available.
Waiting patiently for the SSD bay kits to be available. I passed on the Apple SSD when I ordered my iMac with the intention to put my own in at some point. Bundle it with an OWC SSD and price it aggressively please!
Hi Matt, did you get your OWC upgrade project finished? How did it turn out? How did it effect operation of your Imac? Have you found any issues with what OWC did for you? Has apple sent out any software “upgrades” that you downloaded that effected your Imac? thanks
A kit for sale including the proprietary hardware fix (but of course not explaining what you did to make it work) would be most welcome. For those outside the US, the Turnkey program doesn’t look like it’s an option (or if it is it would be very expensive).
I have 4 base 2011 iMacs I may wish to get upgraded at some point. Spending about an extra grand to get a SSD in an iMac from Apple (had to get a CTO upgrade to the high end 2011 iMac from Apple for them to do this) versus getting the base 2011 iMac model wash’t worth it.
Can I get the turnkey service to install an OWC Electra SSD that I just purchased into my iMac? Will you perform turnkey service that I’ve already installed an SSD in and third party hard drive?
Original, factory components will only be covered on factory sealed iMacs. Any iMac arriving where the machine itself has been opened by a third party or contains non-factory installed components, will receive warranty coverage on the OWC installed components only. Additionally, parts to be installed through the Turnkey Upgrade Program need to be purchased when placing the order.
That said, you could feasibly return your newly purchased OWC Electra SSD for refund under the 30 Day Money Back Guarantee and re-order the same drive though the Turnkey Upgrade Program.
I’ve upgraded my 27″ iMac with 32GB RAM from OWC and it rocks!
Congrats guys! I knew you’d figure it out eventually!
Now do I have the sac to take apart my baby, or do I send it in…… hmmmm
Question, can we assume the “kits” that you will be offering contain the proprietary hardware fix you mentioned?
The article said:
“With the 2011 iMac Turnkey program, you can buy a base-model iMac, send it to us, and in 48 hours have it upgraded to experience… up to four times the amount of memory available from the factory.”
Actually, 4GB to 32GB is eight times the amount of memory available from the factory.
hey…the base comes with 4GB…upgradable to 8GB or 16GB depending on model….
so the base 21.5 only offers 8GB option from factory…but we offer up to 32GB….
8GB x 4 = 32GB
The math is tough when we are just blowing away the limited options form the factory…but ya gotta trust us….we research, test and live this stuff before posting…