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Product Specs:
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
MacBook Pro Unibody
MacBook Pro (17-inch 2011)
(October, 2011)
Model ID: MacBookPro8,3
2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (17-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,3
2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (15-inch 2011)
(October, 2011)
Model ID: MacBookPro8,2
2.2GHz, 2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (15-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,2
2.0GHz, 2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (13-inch 2011)
(October, 2011)
Model ID: MacBookPro8,1
2.4GHz, 2.8GHz
MacBook Pro Unibody
MacBook Pro (13-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,1
2.3GHz, 2.7GHz
iMac Intel
iMac (21.5-inch Late 2011)
(August, 2011)
Model ID: iMac12,1
3.1GHz i3
iMac Intel
iMac (21.5-inch Mid 2011)
(May, 2011)
Model ID: iMac12,1
2.5GHz i5, 2.7GHz i5, 2.8GHz i7
iMac Intel
NOT COMPATIBLE
iMac (21.5-inch Mid 2010)
(July, 2010)
Model ID: iMac11,2
3.06GHz, 3.2GHz, 3.6GHz
iMac Intel
iMac (27-inch Mid 2011)
(May, 2011)
Model ID: iMac12,2
2.7GHz i5, 3.1GHz i5, 3.4GHz i7
iMac Intel
iMac (27-inch Mid 2010)
(July, 2010)
Model ID: iMac11,3
2.8GHz i5, 2.93GHz i5, 3.6GHz i7
iMac Intel
NOT COMPATIBLE
iMac (27-inch Mid 2010)
(July, 2010)
Model ID: iMac11,3
3.2GHz i3
Mac mini Intel
Mac mini (Mid 2011)
(July, 2011)
Model ID: Macmini5,1 & Macmini5,2
2.3GHz, 2.5GHz, 2.7GHz
Mac mini Intel
Mac mini (Mid 2011 Server)
(July, 2011)
Model ID: Macmini5,3
2.0GHz
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 / 5 230 out of 238 (97%) reviewers would recommend this product
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Verified Buyer
Reviewer: Skilos Location: CT Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 RAMM that delivers April 9, 2017 Upgraded an older MacBookPro8,2 early 2011 MBP. I like the older ones they still have all the ports. Had only 4GB. bumped up to 16GB with Mac Sales "16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit". Big difference, Photoshop and AutoCad gobble up RAM. noticed the speediness right away. Install was straight forward as usual.

Next up a nice SSD from MacSales, and we are off and running. This thing should be flying when i'm done. MacSales quality parts at good prices. My go to spot.

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

Verified Buyer
Reviewer: Cajak Location: PTY Age: 35-44 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Ram April 9, 2017 Works perfectly

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

Verified Buyer
Reviewer: luckyfix
Rating: 5/5 good product April 8, 2017 I would recommend this item to a friend! Customer Videos:
Verified Buyer
Reviewer: BentBob Location: Dallas Texas Age: Over 65 Experience Level: Hobbiest Owned Product: less than a month
Rating: 5/5 16GB changed everything April 7, 2017 This was probably the easies upgrade yet. Memory sure makes a difference.

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

Verified Buyer
Reviewer: Happyguy Location: SC Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great April 7, 2017 My Grand daughter need to upgrade RAM in MBP. Got it quickly, installed it and worked exactly as it should!! Thanks. Good price too!!

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

Verified Buyer
Reviewer: okiryler Location: Honolulu, HI Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Amazing April 7, 2017 After carefully selecting the correct product to match the model and capabilities of my Mac, the upgrade to this RAM improved the speed of my machine 10 fold. The service was streamlined and wonderful. My product arrived a day before expected. The instructional video was all I needed to complete the repair in about 15 minutes. I would highly recommend OWC products to anyone looking to upgrade their machine.

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

Verified Buyer
Reviewer: MikeDelighted Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Macbook8,1 (Early 2011, 2.3Ghz) Runs Like New! March 14, 2017 This review is for both the 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz Memory Upgrade (OWC1333DDR316P) and the Solid State Drive Kit (OWCY3SSD6E480) which includes the OWC Mercury Electra 6G SSD 480GB drive. These were installed in a Apple Macbook Pro (Macbook8,1 – Early 2011 2.3Ghz; which had the original 4GB of memory and 320 Gig HDD with approximately 38 GB free, and macOS Sierra 10.12.3). I also did a clean install of MacOS Sierra as was recommended in the OWC/Macsales help guides.

Prior to upgrading I was extremely frustrated with the computer and was ready to buy a new mac. All of my applications took forever to open (>1 minute to open any one application was common, sometimes 2-3 minutes when other applications were open). Also, I was getting the spinning beach ball/pinwheel of death continuously during normal use, and any time I had more than a few browser tabs open and/or more than one application (like Word or Excel). I was NOT doing any kind of truly heavy lifting like photo or graphics editing. As a result, I even tested for viruses or malware thinking that there was no way the computer could be running this slow otherwise.

However, after checking the Activity Monitor (memory tab) for memory utilization it became clear that it was maxed and that there was a lot of disk swapping going on to manage the lack of memory. Checking the same after the upgrade, I’m regularly seeing 12GB of ‘Memory Use:’ of the 16GB available. This is occurring, for example, when I am typing this review, and have Chrome open with 16 tabs open (many news articles), also Excel, Word, and a cloud storage application. All of these are essentially idle while I’m typing, but nonetheless, 12 GB of memory used—this is not a technical analysis, but surely with only 4GB previously, this must explain the beach ball of death?

Immediately after performing both upgrades, and completing the clean install of macOS Sierra and transferring over my data from the old HDD, I tried an experiment: I clicked to open Chrome, Firefox, Word, and Excel one after another as quickly as I could. Previously, opening even two of these at once caused my macbook to choke, in this case all of them opened in <30 seconds. Incredible difference.

In summary, my macbook is running like a brand new computer, and I highly recommend this upgrade path for anyone who has a similar macbook. I used the helpguides available for backing up my existing drive, installing macOS Sierra and transferring the existing data to the new SSD. Also the videos on installing the memory and the hard drive, both of which was very easy to do on my mac.

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

Verified Buyer
Reviewer: Queenof1211 Location: Columbia, SC Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 works perfectly March 14, 2017 Memory works perfectly in my mid-2011 iMac 21.5". Arrived quickly, installation instructions were simple, took me 5 minutes. I've now doubled my RAM and my Mac works like new again!

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

Verified Buyer
Reviewer: XavierATL Location: Atlanta,GA
Rating: 5/5 Great upgrade March 13, 2017 My Macbook pro is much faster after installing the new memory, was definitely worth the money spent, will use this website for future upgrades as well

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

Verified Buyer Top 250 Contributor
Reviewer: rsewill Location: Saint Cloud, Minnesota Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 You can never have too much RAM March 9, 2017 I finally upgraded my two 2011 MBPs! My 15" had 4GBs RAM and and my 17" had 8 GBs RAM. Now they each have 16 GBs RAM! The install videos on OWC made the swap a snap!!

Customer Videos:

Verified Buyer
Reviewer: KentJarrett Location: Dallas, TX Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 WOW what a difference! February 28, 2017 I purchased a new MacBookPro Touchbar over Christmas. I LOVE that machine, but I quickly realized just how slow my current 2011 MacBook Pro was. It was a i7 2.8 GHZ machine. By upgrading the memory from 4 GIG to 16 GIG and installing the 500 GIG SSD hard drive, it made the old machine also as fast as the new machine. If I would have done these upgrades first, I would have not bought the new Mac. WOW,, what a difference and very easy upgrade to do. Followed the step by step videos with NO problems.

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

Verified Buyer
Reviewer: SeaRock Location: Simi Valley, CA. Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Faster Made Life Easier! February 20, 2017 What a huge speed improvement. My "Mini" is rocking fast now. The family is much happier now. I should get a few more solid years out of it. The videos make installation a breeze. Also, I have had excellent follow-up from Customer Service, since my purchase. Great company!

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

Verified Buyer
Reviewer: Tzinger Location: Orange County California Experience Level: Noob Owned Product: 1-3 months
Rating: 5/5 Great Service and simple to order what I needed January 31, 2017 Great website with instructions to find the exact parts I needed for my computer. Installation tips as well easy to follow. Quick turn around on order and shipping.

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

Verified Buyer
Reviewer: ronaldeugene Location: HAWAII Age: Over 65 Owned Product: less than a month
Rating: 5/5 THE EXACT PRODUCT AT THE RIGHT TIME January 30, 2017 PRODUCT WORKED WONDERFULLY IN MY COMPUTER AND HAS INDEED ADDED THE SPEED I ANTICIPATED. THANK YOU AGAIN FOR YOUR FINE SERVICE.

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

Verified Buyer
Reviewer: Alins Location: Campinas, Brazil Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 No problems January 30, 2017 Memories are in place, working well since the beginning.

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Verified Buyer
Reviewer: DCMac
Rating: 5/5 Perfect! January 30, 2017 Product and customer service were spot on, couldn't ask for anything better. I'm glad I chose MacSales.com!

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Verified Buyer
Reviewer: lowerground Experience Level: IT Professional
Rating: 5/5 Works Great!!! January 19, 2017 iMac Mid 2010 27" per specification, maximum memory is 16GB only (4x4). But i installed this 8x8 & my iMac mid 2010 recorgnizes the 32GB mem.

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

Verified Buyer Top 250 Contributor
Reviewer: manauref
Rating: 5/5 Great for work January 17, 2017 Great for processing large arrays and using memory intensive websites at the same time

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

Verified Buyer
Reviewer: tommym Location: New York,NY Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Worked Great January 16, 2017 Even though Apple says that my Mid-2011 MacBook Pro can only take 8GB of RAM, OWC said it can take 16GB, and buying this excellent product proved that OWC was correct! Thank you.

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

Verified Buyer
Reviewer: solo Location: Sacramento Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Don't buy less than 16GB of RAM January 16, 2017 I have a "early 2011" macbook pro. When I bought it I could only get 8 GB of RAM. I recently upgraded to 16 GB. I use a couple of apps that tell me how much free memory I have as I use my computer. Even with 16 GB I frequently find I am using over 12 GB of the available 16 GB. And yes I do notice a performance increase. Enough that I'm not sure I need a SSD.

I checked quality even though I have only been using the new memory a little over a month because the video on how to do the upgrade is great. It is a very easy upgrade.

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

Verified Buyer
Reviewer: WingRider2 Location: Kingston Ontario Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Another wonderful product and experience January 11, 2017 Delivery was fast and without delay. With the help of the online OWC videos I was able to replace the RAM and restart two MacBook Pros without incident. It is great to work with a company that really does help their customers.

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

Verified Buyer
Reviewer: vashino Location: USA Age: 25-34 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Works great January 2, 2017 I have a 15" Macbook Pro (Early 2011) and OWC recommended the correct RAM for my computer configuration: 1333 MHz compatible with my 2.0 Ghz quad-core processor (2720QM).

Installation was super easy!

Went from 4GB for to 16GB for just over $100, I should have done this sooner!

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

Verified Buyer
Reviewer: buttermilkphil Location: Ridgecrest, CA Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 It was "a piece of cake" installing the memory. So simple even a senior citizen can do it. December 27, 2016 I watched the video made available on youtube and saw that there was nothing to the upgrade that would be complicated. I made the installation myself in minutes and immediately had the memory I so badly needed. The computer is a bit over 5 years old but very serviceable and I'm glad that a company like MacSales is around to help.

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

Verified Buyer
Reviewer: Maddawg Location: California Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Best RAM upgrade December 11, 2016 So I was a little concerned when buying the 16GB But after seeing that OWC tested and "blessed it" I gave it a go. Worked amazing and the OS saw all 16GB and ran like a champ Thanks OWC for all the great things you do

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Verified Buyer
Reviewer: Evomotion Location: Australia Age: 45-54 Experience Level: Gamer Owned Product: less than a month
Rating: 5/5 It woked December 11, 2016 Fantastic, I have order ram before from other company's failed upon installation, Mac Sales OWC products do what they state.

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OWC Memory 16.0GB 2 x 8.0GB PC10600 DDR3 Kit Mfr P/N: 1333DDR3S16P MacSales.com SKU: OWC1333DDR3S16P OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day only $124.99
Add to CartOther World Computing 1333DDR3S16P In Stock, Click to Buy Now