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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 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, 2.93GHz, 3.2GHz, 3.6GHz
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
iMac (21.5-inch Mid 2010)
(July, 2010)
Model ID: iMac11,2
3.06GHz, 3.2GHz, 3.6GHz
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
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 / 5 266 out of 276 (96%) reviewers would recommend this product
1 2 3 4 5 6 7
Verified Buyer
Reviewer: AceChippe Location: Hickory, NC Age: 25-34 Experience Level: Hobbiest Owned Product: less than a month
Rating: 5/5 Works great out of the box. :) July 10, 2018 Bought the RAM based on reviews, price, and rebate. So far it has been working very well.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Pekelo Location: Kona, HI Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 More Memory July 3, 2018 Installed in a Mid 2011 27" iMac to bring it up to 32 GB. Simple installation and works great. Later install of a 1 TB SSD has made this "old" system a rocket ship after install of High Sierra and a clean up. I would recommend everyone upgrade their memory (if possible) to the max!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: NicholasGMS Location: Singapore Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Excellent product! June 22, 2018 Order was placed on Tuesday (19 June 2018) afternoon and I received it on Friday (22 June) morning. I'm in Singapore, by the way, location of the inaugural Trump-Kim summit. I chose DHL express. Product was very well packaged. Installation was a breeze. Took me about 5 minutes to install on my iMac 21.5" (mid-2010) and restarted without a hitch. 'About This Mac' read "16GB 333 MHz DDR3" right away. Desktop file icons appeared instantaneously as soon as desktop appears - this has never happened before. Normally, beach balls turns and turns for a long time before icons start to trickle in, but this time, it was like Boom!, all there and refreshed with the respective document icons. I can feel the overall performance of my iMac is now speedier even with many applications opened at the same time. Clicking on any folders will display file directory at once without having to wait for comp to 'think'. I'm very happy with the product. Thank you OWC. I highly recommend this product!

- Nick G.M.S.

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: Patrickwlee Location: Toronto Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Good value June 20, 2018 I have never had problems with RAM from OWC. US Mail shipping is low cost, but a bit slow.

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: poet Location: Boston, MA Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 16GB is the new 640k of RAM June 13, 2018 8GB is constricted on my Macbook Pro 8,2. Bumping up to 16GB was quick and easy and it keeps this 2011 MBP still humming along.

This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Rommel Location: Melbu, Norge Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 This product is fantstic in use & the way it was put together. June 12, 2018 I replaced these Memory Kit and it went quickly and perfectly. In use and how fast these work.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Carlsagan2nd Location: Michigan Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 As advertised June 9, 2018 The memory upgrade went as well as expected!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: MariaElena Location: Los Angeles Age: 45-54 Experience Level: Noob Owned Product: less than a month
Rating: 5/5 Excellent Product/Service & Easy to Install June 5, 2018 I nervously ordered 32gb of Memory (consisting of 4 modules) for 2012 27" iMac. (Apple says this computer takes up to 16gb, but it actually works better w/32gb). I wasn't sure that I could install it myself. But thankfully OWC has a video that shows you how to do it. At first I had a lil trouble. I called Customer Svc & they gave me some tips. Tried it again & it worked like a charm! It turns out I hadn't pushed it in all the way.

Very happy with my order! I'm now waiting for my rebate check.

Thank you!

I would recommend this item to a friend! This review is from 32.0GB (8GB x 4) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: MoonDogg Location: Hot Springs, AR Age: 35-44 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Still running strong 7 Years Later!! May 27, 2018 I have had this installed for over 7 years and it still works without any issue. That is quality you can trust.

This review is from 8.0GB (2x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Targi Location: Hastings, NY Age: Over 65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Replacement May 12, 2018 I was surprised not only with the quick service (online chat at that) but also the adjustments to errors from my part. I bought a non refundable memory that didn't even work for my computer; OWC offered a correct replacement. I am awaiting for the new memory with high anticipation. Thank you for your help

This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Harry Location: DFW area Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 iMac 32GB RAM upgrade May 2, 2018 OWC website made it easy to find and order a 32GB RAM upgrade for my 2011 iMac. Order was received faster than expected. The RAM was easy to install and works flawlessly.

I would recommend this item to a friend! This review is from 32.0GB (8GB x 4) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: UpgradeMe Location: Liverpool, NY Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 My goto site for breathing new life into old Macs. April 30, 2018 I've discovered the good practice of rebuilding old Macs, and OWC is without a doubt the only place to go to for completely compatible parts to turn these old used Macs into new powerhouses. The prices can't be beat either. You would easily spend more for "questionable" parts from other sites. Thanks OWC.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: BernardD
Rating: 5/5 MacBook Pro Memory Upgrade April 26, 2018 Got this memory to upgrade the memory on an older MacBook Pro. Works fine.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Songbird Location: Mukilteo, WA Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Super easy March 18, 2018 Easy to locate right parts, easy to install. Great improvement in RAM speed. It's like I have a new computer!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: MacLover2018 Location: Seattle,WA Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 iMac like new again! March 11, 2018 Purchased the maximum amount of RAM for this model. I love the website, it's,very easy to use, and walked me thru purchasing the correct product for my Mac. The extra RAM has my old iMac working like it did 5 years ago!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: dbush Location: Louisiana Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Memory upgrade kit for Macbook Pro 15" March 11, 2018 I'm very pleased with the memory upgrade kit that I received. It is exactly what my 15" Macbook Pro needed. Wonderful Customer Support at MacSales. Terrific videos on installing memory on your website!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Antonioj Location: Virginia Beach, VA Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 GOOD PRODUCT February 27, 2018 I am pleased with the added 16 GB of RAM. I’m not a computer goo roo, not even close. But I now have 20 GB. When it comes to moving around off line there’s a big difference. I’m told I have really good Wi Fi. In line I’m about the same. I’m very happy with my product

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: jpat Location: Midwest Canada Age: 55-65 Experience Level: Noob Owned Product: less than a month
Rating: 5/5 Wonderbar! RAM should be the name of a new chocolate bar!! February 12, 2018 Well, for a beginner / skeptic / novice person like me - who knows nothing about computers .. I am so thanks for the wonderful website and people behind MacSales.com.

Folks ... if you do one upgrade on your beloved MAC, get the RAM .. it is amazing, extending the life of our wonderful input devices for another few years ... breathing new life into your device with a bit more pep and vigor!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Sethimus Location: New York, NY Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Trustworthy Upgrade February 6, 2018 I updated an iMac11,2 (3.06 GHz) in January 2018 with this kit to max out its memory capacity and buy some more in-service time for this aging office machine. I had read a review elsewhere that claimed some users experienced problems with OWC memory (specifically 16GB) in this particular iMac, but I decided to give it a try anyway. We've had no issues whatsoever, and the primary user of this machine is very happy with the upgraded performance. Another win for OWC!

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Rose7Mc Location: France Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 3/5 I'm satisfied with this product February 6, 2018 I'm satisfied with this product, but the explanation should be a bit better. You have to press the module VERY firmly into the compartment and the click you can hardly hear. You dare not press so firmly, because the modules are vulnerable. I'm glad I was successful eventual.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Oldcabdriver Location: North Carolina Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great memory fix for my mid-2011 iMac January 30, 2018 I could not be happier with the new 32Gb of memory I just put into my aging iMac. It was just what I needed to handle memory-demanding Pro Tools, Photoshop and other applications that kept freezing and generating "need more memory" error messages. I found MacSales, chatted with a sales rep to verify that I ws ordering the right fix. Two days later the memory upgrade kit arrived, and I had it installed literally minutes later. Very simple job.I've been running both Photoshop and ProTools side by side all afternoon. They open and operate quickly, and -- best of all -- not a single interruption. This may not be the answer for everyone, but it sure worked for me.

I would recommend this item to a friend! This review is from 32.0GB (8GB x 4) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Ballerina4life Location: Chicago, IL Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Instruction video made this possible! January 28, 2018 The instructional video gave me the confidence to do this upgrade and the product can quicker than expected and met all expectations.

I would recommend this item to a friend! This review is from 2.0GB PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 Memory Upgrade Module. Customer Videos:

Verified Buyer
Reviewer: buckeyeTom
Rating: 5/5 just what I needed... January 25, 2018 worked perfectly..... fast shipment

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: jacob225 Location: Stuttgart, Germany
Rating: 5/5 Best Purchase I made in years January 23, 2018 I know a decent amount when it comes to various tech things, but somehow I had no idea that if I upgraded my memory the great things that would be possible. I received the memory upgrade in a good amount of time. The installation was very simple, the videos that you are able to find on installing it are straightforward and easy to follow.

I would recommend buying this product to anyone who wants to move forward with making their computing life better.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: upgrademymacbook Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 2011 MacBook Pro rides again! January 22, 2018 My wife had given up on her 2011 MacBook Pro running its standard 4GB RAM. It couldn't do two things at once and frequently beach-balled when opening even one app. The 16GB from OWC has made it snappy and useable again - she's pinching herself. This upgrade cost less than 10% of a new MacBook Pro and it was so worth it!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-10600 DDR3 1333MHz SO-DIMM 204 Pin CL9 SO-DIMM Memory Upgrade Kit. Customer Videos:

OWC Memory 4.0GB 4.0GB PC10600 DDR3 Module Mfr P/N: 1333DDR3S4GB OWC SKU: OWC1333DDR3S4GB OWC Memory Upgrade Module Lifetime OWC Limited Warranty Ships: Same Day only $37.99
Add to CartOther World Computing 1333DDR3S4GB In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 2GB
    • Ships: Same Day
    • Only $16.49
    • $16.49
  • 4GB
  • 4GB (2x2GB)
    • Ships: Same Day
    • Only $32.98
    • Matched Kit for $29.99
  • 8GB (2x4GB)
    • Ships: Same Day
    • Only $83.98
    • Matched Kit for $69.99
  • 8GB
    • Ships: Same Day
    • Only $74.99
    • $74.99
  • 12GB (8GB+4GB)
    • Ships: Same Day
    • Only $116.98
    • Matched Kit for $109.99
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $149.98
    • Matched Kit for $147.99
  • 16GB (4x4GB)
    • Ships: Same Day
    • Only $167.96
    • Matched Kit for $139.97
  • 24GB (2x8GB + 2x4GB)
    • Ships: Same Day
    • Only $233.96
    • Matched Kit for $214.99
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $299.96
    • Matched Kit for $289.99