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Crucial - DDR3 - kit - 16 GB: 2 x 8 GB - SO-DIMM 204-pin - 1333 MHz / PC3-1

Mfg # CT2K8G3S1339M CDW # 3102983 | UNSPSC 32101602

Quick tech specs

  • kit
  • SO-DIMM 204-pin
  • CL9
  • unbuffered
  • for Apple iMac 27" (Late 2012
  • Mid 2015); Mac mini (Late 2012); MacBook Pro (Mid 2012)
  • 16 GB: 2 x 8 GB
  • 1333 MHz / PC3-10600
  • 1.35 / 1.5 V
  • non-ECC
  • Late 2013); iMac with Retina 5K display (Late 2014
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Know your gear

Engineered to be compatible with your Apple system, Crucial Memory for Mac takes the guesswork out of a memory upgrade. Since Apple systems often have very specific memory requirements, including particular component densities, speeds, and SPD programming specifications, it's important to buy your memory from people who know Apple computers inside and out. With over a decade of experience manufacturing and developing memory for Apple systems, Crucial makes it easy to find memory that's been designed specifically for your system.

If you're an Apple computer user, you probably expect intuitive, reliable performance from your system. Crucial thinks memory should work the same way, too. For each module it manufactures, Crucial sends it through a rigorous testing process to ensure that you're getting a reliable, high-performance memory solution. Every module that leaves the doors has been extensively tested at the component level for voltage and temperature resistances, signal integrity, and software compatibility. Even better, Crucial modules are lead and halogen-free (DDR3 modules only). The result? Reliable memory that meets or exceeds Apple's own memory requirements.

Unsure how to install memory or have an important question about your Apple system? Let the team of experts help! With a tech-savvy team that's well-versed in Apple systems, Crucial will provide the technical support you need - no matter how old your Mac computer gets. From phone support, videos, FAQ articles, and do-it-yourself guides, Crucial has got the resources you need to keep your system up to speed.

Crucial is a trusted name when it comes to DRAM, and that's no coincidence. As a brand of Micron, one of the largest manufacturers of DRAM in the world, Crucial works with its engineers to design, refine, test, manufacture, and support an extensive line of memory modules. With a product portfolio that includes more than 250,000 different DRAM upgrades for more than 50,000 systems, Crucial has got one specifically designed for your Mac system. For more than a decade Crucial has kept Mac computer owners happy with high-performance memory and outstanding customer service. No matter what type of Mac system you have, Crucial has got a compatible solution.

This item was discontinued on March 15, 2023

Enhance your purchase

Crucial - DDR3 - 16 GB: 2 x 8 GB - SO-DIMM 204-pin - unbuffered is rated 4.84 out of 5 by 25.
Rated 5 out of 5 by from Works in 27" iMac mid-2011 Crucial says to install CT3757637, but this kit worked in my iMac just fine, it has all the same specs. Big improvement in speed over the 4GB that was in there originally. No more spinning beachball, things snap right open.
Date published: 2015-10-17T00:00:00-04:00
Rated 5 out of 5 by from Outstanding service & product! I purchased the 16G kit for my late 2011 MacBook Pro to replace the 2x4G. The installation was very easy and took approximately 20 minutes, although it could have been done in 10 minutes. Removing and replacing the case screws was the most time consuming aspect. Once started up, the homescreen appeared very quickly (no spinning rainbow wheels) and it has run flawlessly now for about a month. Previous to the installation, this was used as a second machine to a much newer MacBook Pro. It was becoming slower and slower - unable to keep up with all the iOS upgrades. For this reason, I used it very infrequently. Now, however, the unit has a new lease on life and is performing outstandingly and I use it often. I don't know why I waited so long to do this.
Date published: 2018-01-13T00:00:00-05:00
Rated 5 out of 5 by from Works Great in 2012 iMac Bought this to bump up memory in mid-2012 iMac that came with only 4Gb. The original iMac specs say you're limited to 4Gb DIMMs, but Apple released a firmware upgrade that increases that limit to 8Gb DIMMs. This allowed me to keep the original 4Gb, and add this 16Gb kit to make 20Gb total. Took all of 5 minutes to install - gave an immediate improvement to performance. Everything worked out great!
Date published: 2016-12-20T00:00:00-05:00
Rated 5 out of 5 by from I would by this product again Very simple to purchase and install. Online diagrams for my laptop were right on.
Date published: 2018-08-10T00:00:00-04:00
Rated 5 out of 5 by from Great product!!!!!!! Works very good so far. Pleased with my purchase.
Date published: 2018-08-03T00:00:00-04:00
Rated 5 out of 5 by from It works! Once I ordered this it worked perfctly when installed.
Date published: 2018-04-19T00:00:00-04:00
Rated 5 out of 5 by from working great my daughter installed the increase in memory on my laptop and now it's working great. No more lag. :)
Date published: 2018-02-11T00:00:00-05:00
Rated 5 out of 5 by from Made iMac like new again. After the installation of OS X High Sierra, the system got somewhat slower and the number of applications opened at one time had to be reduced. Installed the new RAM in the 2 remaining slots, giving the computer a total of 20 Gigs of RAM. Started the system and checked it out for performance and speed. What an improvement!
Date published: 2018-03-10T00:00:00-05:00
Rated 5 out of 5 by from Great Site & Product Easy to find what I wanted, came as promised, works as expected.
Date published: 2018-02-04T00:00:00-05:00
Rated 5 out of 5 by from Perfect fit Works flawlessly
Date published: 2018-07-29T00:00:00-04:00
Rated 5 out of 5 by from Good price, easy install. Helped computer run faster. Good price, easy install. Helped computer run faster.
Date published: 2018-08-15T00:00:00-04:00
Rated 5 out of 5 by from It made a big difference I tripled my RAM in my 2010 iMac and it made a big difference. The RAM that I purchased from Crucial arrived in a few days an was easy to install. The online chat help desk was quickly able to determine that I had installed the memory correctly in the proper memory banks and in the proper order.
Date published: 2018-07-06T00:00:00-04:00
Rated 5 out of 5 by from I paid for 3 day shipping I paid for 3 days shipping and after 7 days I still don't have the product.
Date published: 2018-06-30T00:00:00-04:00
Rated 5 out of 5 by from Great RAM Excellent RAM kit. My 2010 iMac is so much faster now. I put 8GB in all four slots for 32 GB total - awesome.
Date published: 2018-03-06T00:00:00-05:00
Rated 5 out of 5 by from So far, so good. Added 16GB to the 8GB desk top memory I had and am very pleased. Very easy to do and no hassle.
Date published: 2018-06-22T00:00:00-04:00
Rated 5 out of 5 by from EXACTLY WHAT I WANTED The memory was exactly as I ordered and I increased my iMac to 32GB. It has expanded the working life of my iMac and my work speed tremendously.
Date published: 2018-10-22T00:00:00-04:00
Rated 5 out of 5 by from Fixed a real headache! I had a computer (Lenovo) that was locking up for seconds at a time after installing a new software application. I checked and it was a memory overload situation. Crucial's website was perfect for selecting the right memory and it was very easy to order. I inserted it into the empty memory slot and the problem has disappeared!
Date published: 2018-08-16T00:00:00-04:00
Rated 5 out of 5 by from Quick and easy. Works great. right product. Crucial was recommended. The Product worked fine, got it quickly. Good job!
Date published: 2018-08-24T00:00:00-04:00
Rated 5 out of 5 by from Great PC upgrade I upgraded my PC by replacing my standard issue 4GB Ram / 500GB hard drive (which was nearly full) with a Crucial 1GB SD drive and 16GB. Wow! Fabulous results. Reasonable cost, super simple and quick for both upgrades (about 1 hour).
Date published: 2018-03-08T00:00:00-05:00
Rated 5 out of 5 by from Yes I would buy this product again. I upgraded my RAM in a mid-2011 iMac from 4 to 20 (added 16). It was simple to do, works flawlessly and speeds up the PC.
Date published: 2018-04-24T00:00:00-04:00
Rated 5 out of 5 by from Simple solution I used the online tool to let Crucial determine the right RAM for my laptop. It presented several purchase options and I simply selected what I needed. Couldn't have been easier! Installing the RAM took seconds and now my machine is much faster.
Date published: 2018-07-26T00:00:00-04:00
Rated 5 out of 5 by from Great product, very easy to install and it works no flaws. I increased the ram from 4 to 20 ( added 14) in my mid-2011 iMac. Hugh improvement and simple install. I am not a techie and accomplished the upgrade in about 10 mins thanks to directions on the site.
Date published: 2018-04-24T00:00:00-04:00
Rated 5 out of 5 by from Perfect fit The module fit perfectly. And at a reasonable cost. Highly recommended.
Date published: 2018-08-09T00:00:00-04:00
Rated 5 out of 5 by from Perfect as always The product was as described and arrived in a timely fashion. I have never had issues with these products.
Date published: 2018-06-05T00:00:00-04:00
Rated 5 out of 5 by from I would buy again Easy to install and use.
Date published: 2018-06-29T00:00:00-04:00