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Memory Trade in
Save money by trading in your original chips! View available memory rebates.
From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
iMac Intel
iMac (27-inch Late 2009)
(October, 2009)
Model ID: iMac10,1; iMac11,1
2.66GHz, 2.8GHz, 3.06GHz, 3.33GHz
iMac Intel
iMac (21.5-inch Late 2009)
(October, 2009)
Model ID: iMac10,1
3.06GHz, 3.33GHz
PC Laptop
PC Laptops
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 4.9 / 5 713 out of 733 (97%) reviewers would recommend this product
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Verified Buyer
Reviewer: KeithD Location: USA Owned Product: less than a month
Rating: 5/5 Great Source July 3, 2018 Ordered memory for my Macbook on a Friday and rec'd it the following Mon. via regular mail. The price was considerably better than Amazon & other sources.

If that weren't enough my sluggish Mac is zipping along nicely with the added RAM. I should mention the support info on the site is excellent - very pleased. Keith D.

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: llapace Location: Tampa,FL Age: 18-24 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Excellent experience. Great product. July 1, 2018 Sales and tech support were nothing but pleasant and helpful. New RAM works flawlessly, accompanied with SSD the boot time of my 2010 13in MBP went from over a minute to around 10 seconds.

I would recommend this item to a friend! This review is from 8.0GB PC3-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: nachostanda Location: Fresno, CA Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great RAM June 13, 2018 Boom, my stock 4gRAM late 2009 iMac is a real beast now that I've upgraded to 16g RAM from OWC. Great product and would recommend!

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: teachart68 Location: Fort Wayne, IN Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great Inexpensive Upgrade June 6, 2018 Had a late 2009 iMac that could barely chug along. Very slow with Adobe CC. After adding the new RAM everything is much, much, much faster!

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: P2images Location: Old Saybrook Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 These were flawless May 14, 2018 Packed well, fast shipping, great instructions, and no memory errors.. would buy again and recommend to anyone.

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-8500 DDR3 kit for Late 2009 iMac11,1 models.. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: MaRtYnMcfly Location: Monterrey NL, Mexico Age: 35-44 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Excelent April 30, 2018 excelent work fine and easy to setup only two screws

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Nouxboux27 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Very happy with my purchase April 25, 2018 I upgraded my mom's 2009 iMac from the stock 2 RAM to 8. It's like a new machineI Installation was a breeze and I'm certain (based on my previous experience with OWC RAM) that the quality of the RAM is top-notch. Highly recommended!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: MrPhysics2 Location: OKC, OK Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Everything works as expected April 22, 2018 As usual OWC memory always works up to the levels claimed on the website even if they are above what Apple officially supports. I have never had an OWC memory chip go bad.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: DrDon Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Best upgrade for a mini !! April 22, 2018 OWC provided quick shipping for my memory. The online video tutorial made installing the new ram a snap. Highly recommend !!!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 1066MHz SO-DIMM 204 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Alanaml Location: Dublin Ireland Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 This is just what i needed to use my Digital audio software. April 13, 2018 I actually thought my refurbished MacBook could only take 4Gigs Ram until I discovered your website. I now have 8Gigs which allows me to run digital audio software which I previously could not do. Great product and great tutorial videos and PDFs. This is the first time I have tried to do anything myself with by MacBook and I am thrilled with my success.Keep up the good work.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Ernie22 Location: Corpus Christi, Texas Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Upgrade April 12, 2018 Upgrading the Ram or memory for my MacBook Pro went better than I thought. When I checked with Apple they told me I could only upgrade to 8 GB, but when I asked a sales represennitive from Macsales he. Cjexked my model and let me know that I could upgrade trombone 4GB to 16 GB of Ram, and again the instructional videos that Macsales offer online show you how easy and inexpensive it is to upgrade. My MacBook Pro works great.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: Lpx2lqz
Rating: 5/5 Memory worth the price April 6, 2018 Memory upgrade is worth the price

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: JeffS12 Location: Orange County, CA Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Turned my old Mac into a new beast March 29, 2018 Great product and easy to install.

Customer Videos:

Verified Buyer
Reviewer: Kroniu Location: Poland Age: 25-34 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Top quality product March 28, 2018 Bought this additional RAM for my wife's 2009 iMac as a part of my big upgrade plan: "New life for good ol' Mac" ;) Top quality product, works as expected. Installation process is super easy. Adding RAM to your computer is always a good idea but getting rid of old HDD in favor of SSD is a real game changer :)

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: cesaydah Location: carmichael, ca; late of nanuet, ny Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 As easy as advertised March 27, 2018 I quadrupled the RAM on my old MacBook Pro from 2009. After watching some YouTube videos on how to do it, I took the plunge, ordered from MacSales, and -- a miracle -- my old sluggish machine that took forever to respond became a modern laptop with a life. I am now considering updating the hard drive to a solid state drive from MacSales to turn a really good old machine into a truly great device, as flexible and responsive as my iMac.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: PaulInOregon Location: O R E G O N Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 My MacBook Pro Has Been Resurrected! March 22, 2018 I had been growing increasingly dissatisfied with my 2010 MacBook Pro, as it got a little slower over the last couple of years. It took me a long time to decide to spend big $ on a new MacBook Air, and right before I finally did, I discovered that mine would recognize 16GB of RAM, and that my favorite Mac product source had it available. I thought it would be worth the gamble, and it sure was! 16GB of RAM woke up my old MacBook Pro to a respectable level. It's very cool to soup up an old machine that has never let me down, other than simply growing progressively slower over the years. Now I can easily see myself using it daily well past its 10th birthday. Now I have $ set aside for some cool new motorcycle farkles!

On a side note, I purchased this RAM with money I earned installing RAM for friends and colleagues who are afraid to open their laptop cases, $25 at a time. HA - SUCKERS!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: MusicLover Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Makes it Simple March 21, 2018 I would have never known I could upgrade to 16 Gig without the information on this site. The parts selection menus make it easy to find the correct memory modules and the videos make the installation easy.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: Bachadaboy Location: Arlington Virginia Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Worked when all the others failed March 20, 2018 I tried another company that provided the 16GB RAM for my Mid 2010 MacBook Pro and waited a long time and finally asked the company what happened. They had said that they just received back the RAM they sent me in the torn and tattered packaging that could barely be read and told me they'd be sending me another 2 RAM sticks because they weren't sure if they had been damaged. I received those and they were Kingston and didn't work (booted half-way). They sent me some Samsung, didn't work (didn't boot at all). I sent them back and after a month of trying to get 16GB of RAM in my Mac, I just ordered it from MacSales.com and shortly, and I mean very shortly after ordering they arrived and have worked perfectly ever since. Don't waste your time with other companies.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: njbill Location: Oakland, CA Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Easy Install, worked the first time March 13, 2018 Late 2008 MacBook Pro. Apple says 4GB max RAM, but this 8GB pair works fine and speeds up the works. Installation instructions were perfect. No problems. Thanks, as always.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: MatthewInA2 Location: Ann Arbor, MI Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Best part is the model-specific install instructions March 5, 2018 These arrived right away. (officially my model only supports 4G, but OWC knows that I can get things in high gear with 8G)

The install instructions are easy to follow and everything worked right away.

And *wow*, it is like my computer is 10 years younger. No longer bogs down when I have more than 3 or 4 apps running.

This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: puffNations Age: 25-34 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great quality February 27, 2018 I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:
Verified Buyer
Reviewer: jwLog Location: Austin, Tx Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Product worked as expected. February 27, 2018 Correct part was identified and promptly delivered. No problems at all.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Thecoffeesmith Location: Cuyahoga Falls, OH Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 My Mid-2010 MacBook Pro feels like a new machine February 20, 2018 I am fortunate that my MBP was one of the few machines from that era that can handle 16GB of ram. I purchased an 8GB module and kept one of the original 2GB modules for a total of 10GB. The difference in speed is astounding! Coupled with replacing my old 5400RPM hard drive with a 500GB SSD, this machine now feels like a new computer.

The tech support before I ordered the memory helped to make sure I ordered the correct module. Best Tech support I have experienced in years!

Installation was a breeze.

This review is from 8.0GB PC3-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: 70dustr Location: Ohio Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Still Going Strong February 19, 2018 It's been nearly 8 years since I installed this memory and it's still going strong. Zero issues with it. I certainly would purchase again and I already have been recommending it.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Daniel47 Location: North Vancouver, B.C. Canada Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Perfect choice February 14, 2018 As always with OWC, if they say they've checked it, tested it, and it works, trust them, it works. If your looking for ram for a 2010 MacBook Pro, this works perfectly.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

OWC Memory 16.0GB 4 x 4.0GB PC8500 DDR3 Mfr P/N: OWC8566DDR3S16S OWC SKU: OWC8566DDR3S16S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day only $139.97
Add to CartOther World Computing OWC8566DDR3S16S In Stock, Click to Buy Now
Additional Capacities & Kits:
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