---
product_id: 67048029
title: "Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green"
brand: "micron"
price: "€ 130.33"
currency: EUR
in_stock: true
reviews_count: 8
category: "Micron"
url: https://www.desertcart.sk/products/67048029-crucial-ct2k8g3s1339m-16-gb-kit-8-gb-x-2-ddr3l
store_origin: SK
region: Slovakia
---

# 1333 MT/s blazing speed 16 GB dual-channel kit Low voltage 1.35V/1.5V efficiency Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green

**Brand:** micron
**Price:** € 130.33
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your Mac’s memory game — because slow is so last decade!

## Quick Answers

- **What is this?** Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green by micron
- **How much does it cost?** € 130.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/67048029-crucial-ct2k8g3s1339m-16-gb-kit-8-gb-x-2-ddr3l)

## Best For

- micron enthusiasts

## Why This Product

- Trusted micron brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Future-Proof Your Setup:** Extensively tested modules ensure reliability for demanding creative and gaming tasks.
- • **Energy-Smart Performance:** Runs efficiently at 1.35V/1.5V to keep your Mac cooler and battery healthier.
- • **Plug & Play Installation:** SODIMM form factor designed for easy, secure installation in Mac laptops and iMacs.
- • **Certified Mac Compatibility:** Apple-engineer approved memory modules for guaranteed system harmony.
- • **Boost Your Mac’s Multitasking Power:** Upgrade to 16GB DDR3L for seamless app switching and heavy workflows.

## Overview

The Crucial CT2K8G3S1339M is a 16GB (2x8GB) DDR3L SO-DIMM memory kit running at 1333 MT/s with low voltage operation (1.35V/1.5V). Designed specifically for Mac systems, it offers certified compatibility, extensive testing for reliability, and a form factor optimized for easy installation in Mac laptops and iMacs. Ideal for professionals and creatives seeking a smooth multitasking experience and enhanced system responsiveness.

## Description

Buy

Review: Worked perfectly in my iMac 27" (Late 2012 - 3.4GHz Core i7) - Bought my iMac March 2013 from Apple Store and configured all extras apart from additional memory because the store price from Apple was extortionate and I had researched on YouTube how easy it is to replace the memory in the iMac 27" model (unlike the 21.5" model). I ordered 2 kits totalling 32GB (4x8GB) because the iMac 27" has 4 memory slots. They arrived promptly and were well packed in sturdy plastic cartons so the modules were well protected and a little tricky to get out but if you pop them out from behind you won't damage them - just make sure you discharge any static and always hold the modules on the edge. I suggest leaving the modules in their packaging until you have removed the memory module cover on the back of the iMac. To install the memory modules you need to lay your iMac screen down on a flat surface (use a soft cloth to protect from scratches - an empty pillow case works just fine). Remove the power cord to get access to the little push button to release the memory module cover. I used the flat end of a screwdriver to push this in hard in order to pop off the cover. Once opened there are two catches holding the existing memory in place (in my case 2x4GB). Pull these catches towards you to release the grip on the modules. Carefully pull out the modules one at a time. Remove all modules before installing any new ones. Now install the new memory modules using the reverse technique. There is a little notch along the edge with the pins so it's impossible to install them the right way around. If you buy more than 1 pack I would recommend you install each pack together i.e. don't mix them in the slots. When installing my modules I found they were a really tight fit and I had to force them in. This could be down to the positioning of the notch above. It seemed easier when installing the modules in the slots from which I took out the old memory. Perhaps the engineer at Apple had the same problem and once forced in initially they become easier to install. I did try to pull them out again but they seemed to be stuck fast...so didn't try again on the basis I've maxed out the memory so don't intend to remove. Push the leaver forward once all modules are installed - it won't click into place if you have not properly installed the memory per the above. Clip the memory cover back in place and power on your iMac. My beeped repeatedly first time suggesting the modules were not fully clipped in. I opened back up and push each modules firmly back in their slots, replaced the cover and booted up again - BINGO all 32GB recognised and has been running sweet every since with no reported system issues and boy coupled with the Fusion drive I spec'd this machine now flies. I looked at several different supplier included non-Apple certified modules from Crucial but decided that if I am going to spend £150+ on memory for an iMac that cost significantly more then it's worth paying the extra to have the reassurance that Apple engineers have certified these memory modules for iMac. It was a toss up between Corsair and Crucial but on the whole I felt that more customers provided positive review comments for Crucial (not just the star rating) and besides when I upgrade my MacBook Pro memory recently I purchased Crucial and have not had any issues with them for over 18 months now. As others have stated on reviews before if you already have 16GB then the performance uplift from 16 to 32 will not be as noticeable as the jump from 8 to 32 obviously but improving your iMac memory by 50% has to be a wise investment given that memory is one of the most cost effective and only ways of upgrading an iMac 27". For gamers out there the main reason I pushed memory up to 32GB was to run some of the triple A games at high frame rates. I spec'd the NVIDIA GeForce GTX 680MX 2GB and this machine now runs Gotham City, COD Black Ops etc flawlessly. Running video editing and ripping software along with multiple other office applications concurrently now is a breeze with no noticeable slow down - and I multi-task heavily with workflow on my iMac.
Review: A much-needed upgrade. - This memory is listed as "Mac compatible" which I figured is just a marketing blurb and all of its specs matched what I required for my (Windows) laptop, so I figured I'd take the chance and buy these after my first attempt failed with a different brand of RAM, some time prior. I was skittish about booting with a different amount of RAM from hibernation, so I shut it down completely and performed the replacement. Pretty standard stuff. As another reviewer has mentioned, be sure to wait a while for the initial boot after RAM installation to complete!! It can take a while, your system/the RAM is not necessarily broken. Maybe have a snack or take a peek at the television or phone for a few minutes while your computer does its thing. After the initial lengthy boot, you will have your normal boot times back again on subsequent boots/restarts. Anyway, this new RAM works great! I finally have enough memory to accommodate all of the programs I like to run simultaneously, such as monstrous browser sessions that can easily eat 2GB of memory a piece. My system would slow to a crawl on 4GB, as it simply wasn't enough. Now it's perpetually responsive. As with all RAM upgrades though, you'll only notice a particular performance increase if you didn't have enough to start with, but you could always use the spare memory as a RAM drive for ludicrous temporary storage speeds. For determining compatibility, it can be slightly complicated. If you look up your system's processor/motherboard on the manufacturer's site, it can usually give you precise details on what type of memory - and how much of it - is compatible with your system. It's what led me to this product in particular. I think Crucial also has a web-app that can help you determine compatibility by providing it with your computer's model. Overall, very pleased with this purchase.

## Features

- Increases Mac system performance
- Compatible with Mac systems
- Every single module extensively tested at the component and module level
- Available in SODIMMs, RDIMMs and ECC UDIMMs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008LTBJK2 |
| Are Batteries Included | No |
| Best Sellers Rank | 49,647 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 286 in Computer Memory |
| Brand | Micron |
| Colour | Green |
| Computer Memory Type | DDR3 SDRAM |
| Customer Reviews | 4.6 4.6 out of 5 stars (18,459) |
| Date First Available | 25 Mar. 2011 |
| Form Factor | SO-DIMM |
| Guaranteed software updates until | unknown |
| Hard Drive Size | 16 GB |
| Item Weight | 0.28 g |
| Item model number | CT2K8G3S1339M |
| Manufacturer | Micron |
| Memory Clock Speed | 1333 MHz |
| Memory Technology | DDR3 |
| Product Dimensions | 17.78 x 1.12 x 12.7 cm; 0.28 g |
| RAM Size | 16 GB |
| Series | CT2K8G3S1339M |
| Voltage | 1.5 Volts |

## Product Details

- **Brand:** Micron
- **Compatible devices:** Notebook^Mac compatibility
- **Computer memory size:** 16 GB
- **Memory speed:** 1333 MHz
- **RAM memory technology:** DDR3

## Images

![Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green - Image 1](https://m.media-amazon.com/images/I/51zCRzd8S+L.jpg)
![Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green - Image 2](https://m.media-amazon.com/images/I/61VJq5sfA8L.jpg)
![Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green - Image 3](https://m.media-amazon.com/images/I/71aqwmplgHL.jpg)
![Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green - Image 4](https://m.media-amazon.com/images/I/71dhSS5YsnL.jpg)
![Crucial CT2K8G3S1339M 16 GB Kit (8 GB x 2) (DDR3L, 1333 MT/s, PC3-10600, CL9, SODIMM, 204-Pin, 1.35 V/1.5 V) Memory for Mac, Green - Image 5](https://m.media-amazon.com/images/I/71v2HApUVAL.jpg)

## Questions & Answers

**Q: Can i install this memory on my imac 27 inch mid 2010 with Intel Core i5?**
A: And it did not work on my iMac 27 inch mid 2010 3.6 GHz with i5 ver 11,3. Called Crucial and they wanted to tell me I had 3.2GHz i3. Further told me that the only way I could get to 16GB of memory was to install 4 x 4GB chips. Plenty of information out there that states this is not true and regarding my machine, I know I purchased a 3.6 GHz i5 and the Mac self reports this, so I'm not confident in Crucial customer support and unfortunately am out the expense of this "upgrade."

**Q: Can Someone confirm if this works on MacBook Pro (13-inch, Early 2011). I currently have 4GB RAM. Thank you. Guru**
A: I have an 13 inch MacBook Pro (Early 2011), it worked and the difference is really noticeable from 4GB to 8GB.

**Q: If my mid 2011 imac 21.5 inch originally has 4gb of ram split into 2 sticks. Can i buy this 8gb kit and add it to the existing 4gb?**
A: I have a mid 2011 imac 27" - clearly states everywhere that the max i am to use is 16GB - 4GB in each of the 4 available slots.  In desperation from my computer freezing almost every few minutes using the internet I took out the 2 4GB I had in 2 of the slots and replaced them with these 8GB - I now have 24GB available.  I can now surf the internet again with more than one window open.

**Q: Will this work with mid 2011 iMac?**
A: The mid 2011 iMac uses 1333Mhz ram.  usually the 1600Mhz ram will down speed and work without any issues, sometimes there are hiccups.  You would be better off getting the 1333Mhz ram.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked perfectly in my iMac 27" (Late 2012 - 3.4GHz Core i7)
*by C***Y on 28 March 2013*

Bought my iMac March 2013 from Apple Store and configured all extras apart from additional memory because the store price from Apple was extortionate and I had researched on YouTube how easy it is to replace the memory in the iMac 27" model (unlike the 21.5" model). I ordered 2 kits totalling 32GB (4x8GB) because the iMac 27" has 4 memory slots. They arrived promptly and were well packed in sturdy plastic cartons so the modules were well protected and a little tricky to get out but if you pop them out from behind you won't damage them - just make sure you discharge any static and always hold the modules on the edge. I suggest leaving the modules in their packaging until you have removed the memory module cover on the back of the iMac. To install the memory modules you need to lay your iMac screen down on a flat surface (use a soft cloth to protect from scratches - an empty pillow case works just fine). Remove the power cord to get access to the little push button to release the memory module cover. I used the flat end of a screwdriver to push this in hard in order to pop off the cover. Once opened there are two catches holding the existing memory in place (in my case 2x4GB). Pull these catches towards you to release the grip on the modules. Carefully pull out the modules one at a time. Remove all modules before installing any new ones. Now install the new memory modules using the reverse technique. There is a little notch along the edge with the pins so it's impossible to install them the right way around. If you buy more than 1 pack I would recommend you install each pack together i.e. don't mix them in the slots. When installing my modules I found they were a really tight fit and I had to force them in. This could be down to the positioning of the notch above. It seemed easier when installing the modules in the slots from which I took out the old memory. Perhaps the engineer at Apple had the same problem and once forced in initially they become easier to install. I did try to pull them out again but they seemed to be stuck fast...so didn't try again on the basis I've maxed out the memory so don't intend to remove. Push the leaver forward once all modules are installed - it won't click into place if you have not properly installed the memory per the above. Clip the memory cover back in place and power on your iMac. My beeped repeatedly first time suggesting the modules were not fully clipped in. I opened back up and push each modules firmly back in their slots, replaced the cover and booted up again - BINGO all 32GB recognised and has been running sweet every since with no reported system issues and boy coupled with the Fusion drive I spec'd this machine now flies. I looked at several different supplier included non-Apple certified modules from Crucial but decided that if I am going to spend £150+ on memory for an iMac that cost significantly more then it's worth paying the extra to have the reassurance that Apple engineers have certified these memory modules for iMac. It was a toss up between Corsair and Crucial but on the whole I felt that more customers provided positive review comments for Crucial (not just the star rating) and besides when I upgrade my MacBook Pro memory recently I purchased Crucial and have not had any issues with them for over 18 months now. As others have stated on reviews before if you already have 16GB then the performance uplift from 16 to 32 will not be as noticeable as the jump from 8 to 32 obviously but improving your iMac memory by 50% has to be a wise investment given that memory is one of the most cost effective and only ways of upgrading an iMac 27". For gamers out there the main reason I pushed memory up to 32GB was to run some of the triple A games at high frame rates. I spec'd the NVIDIA GeForce GTX 680MX 2GB and this machine now runs Gotham City, COD Black Ops etc flawlessly. Running video editing and ripping software along with multiple other office applications concurrently now is a breeze with no noticeable slow down - and I multi-task heavily with workflow on my iMac.

### ⭐⭐⭐⭐⭐ A much-needed upgrade.
*by A***R on 29 July 2017*

This memory is listed as "Mac compatible" which I figured is just a marketing blurb and all of its specs matched what I required for my (Windows) laptop, so I figured I'd take the chance and buy these after my first attempt failed with a different brand of RAM, some time prior. I was skittish about booting with a different amount of RAM from hibernation, so I shut it down completely and performed the replacement. Pretty standard stuff. As another reviewer has mentioned, be sure to wait a while for the initial boot after RAM installation to complete!! It can take a while, your system/the RAM is not necessarily broken. Maybe have a snack or take a peek at the television or phone for a few minutes while your computer does its thing. After the initial lengthy boot, you will have your normal boot times back again on subsequent boots/restarts. Anyway, this new RAM works great! I finally have enough memory to accommodate all of the programs I like to run simultaneously, such as monstrous browser sessions that can easily eat 2GB of memory a piece. My system would slow to a crawl on 4GB, as it simply wasn't enough. Now it's perpetually responsive. As with all RAM upgrades though, you'll only notice a particular performance increase if you didn't have enough to start with, but you could always use the spare memory as a RAM drive for ludicrous temporary storage speeds. For determining compatibility, it can be slightly complicated. If you look up your system's processor/motherboard on the manufacturer's site, it can usually give you precise details on what type of memory - and how much of it - is compatible with your system. It's what led me to this product in particular. I think Crucial also has a web-app that can help you determine compatibility by providing it with your computer's model. Overall, very pleased with this purchase.

### ⭐⭐⭐⭐⭐ Amazing memory. Wish I did this sooner. My laptop operates like a dream now.
*by M***E on 23 June 2020*

I have had my laptop for about 7/8 years and 8GB ram and macOS Sierra were just not cutting it anymore. Feels like I have a new laptop (especially with the update to macOS Catalina). It's a lot faster and nothing lags anymore. Quick 5 minute install if you've done it before and very easy if you haven't, trust me. I considered buying a new laptop as working from home now means I need to squeeze a lot out of this old boy but the RAM has really done it's job and I think I can use this for another 2/3 years or at least until the CPU gives up. Better to spend £80 than £2500 on a new laptop. From the pictures you'll see that - I have a mid 2012 MBP with 2.5GHz Dual core i5, Samsung 840 Pro SSD as the main HDD and have replaced my optical drive with an additional HDD. Now running a "pseudo-super" MBP (the bottleneck is now my cpu lol) If you have a 2013 MBP please try and do as much upgrades as you can! With each one it feels like you actually bought a new laptop.

## Frequently Bought Together

- Crucial Technology 16GB kit (8GBx2), 204-pin SODIMM, DDR3 PC3-10600,
- NewerTech AdaptaDrive 2.5" to 3.5" Drive Converter Bracket
- OWC in-Line Digital Thermal Sensor HDD Upgrade Cable and Install Tools for iMac 2011, (OWCDIYIMACHDD11)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-02*