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  • Crucial 4 GB DDR3 1333 MT/s (PC3-10600) CL9 SODIMM 204-Pin 1.35V/1.5V for Mac (CT4G3S1339M )
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Crucial 4 GB DDR3 1333 MT/s (PC3-10600) CL9 SODIMM 204-Pin 1.35V/1.5V for Mac (CT4G3S1339M )

by Crucial

List Price: $44.99
Price: $43.38 & FREE Shipping. Details
You Save: $1.61 (4%)
Only 20 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
4GB
  • Increases system performance
  • Compatible with Mac systems
  • Every single module extensively tested at the component and module level for functionality
  • Meets or exceeds Apple's own quality requirements
  • Easy installation
  • Available in DDR2 and DDR3 SODIMMs in capacities up to 8 GB
  • DDR3 modules include lead and halogen-free technology
41 new from $36.50

Frequently Bought Together

Crucial 4 GB DDR3 1333 MT/s (PC3-10600) CL9 SODIMM 204-Pin 1.35V/1.5V for Mac (CT4G3S1339M ) + Crucial 8GB Single DDR3 1600 MT/s (PC3-12800) CL11 SODIMM 204-Pin 1.35V/1.5V Notebook Memory CT102464BF160B
Price for both: $115.87

Buy the selected items together



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Crucial 4GB Single DDR3 1600 MT/s (PC3-12800) CL11 SODIMM 204-Pin 1.35V/1.5V Notebook …

Crucial 8GB Kit (4GB x 2) DDR3 1066 MT/s (PC3-8500) CL7 SODIMM 204-Pin Mac Memory …

Crucial Ballistix Sport SODIMM 4GB Single DDR3 1600 MT/s (PC3-12800) CL9 @1.35V …

Customer Rating 4.8 out of 5 stars   (131) 4.7 out of 5 stars   (830) 4.8 out of 5 stars   (610) 4.5 out of 5 stars   (73)
Price $43.38$39.34$75.99$43.84
Shipping FREE ShippingFREE ShippingFREE ShippingFREE Shipping
Sold By Amazon.comAmazon.comAmazon.comAmazon.com
Total Size  This is the total capacity of the RAM in the package. Most users will find 4 GB to be sufficient, though you will want more if you plan to play a lot of 3D games or do video and audio editing. 4 GB 4 GB 8 GB 4 GB
Number of Packages  The number of individual packages included in the product. Bulk products may contain more than one. 1 1 1 1
Memory per Stick  This is the memory capacity of each stick in the package. 4 GB 4 GB 4 GB 4 GB
Number of Pins  The number of pins dictates which kind of slots in which the RAM sticks can be mounted. You will want to make sure that the RAM you buy has the number of pins that your motherboard is designed to accept. 204 204 204 204
Memory Clock Speed  This is the speed at which data can be written to and read from the RAM. Higher clock speeds allow for faster access to data, meaning less wait time. 1333 MHz 1600 MHz 1066 MHz 1600 MHz
Memory Technology  RAM comes in two main types: SO-DIMM, used in laptops and small computer systems; and DIMM, used in desktop PCs. Both primarily use DDR technology, which comes in three types: DDR, DDR 2, and DDR 3. You will want to make sure to buy RAM matching the type your motherboard will accept. DDR3 1333 DDR3 1600 DDR3 1066 DDR3 1600
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Technical Details

Capacity: 4GB
  • RAM: 4 GB
  • RAM Type: DDR3 SDRAM
  • Operating System: Windows
  See more technical details

Product Details

Capacity: 4GB
  • Product Dimensions: 7 x 0.4 x 5 inches ; 1.6 ounces
  • Shipping Weight: 3.2 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B008LTBKKQ
  • Item model number: CT4G3S1339M
  • Average Customer Review: 4.8 out of 5 stars  See all reviews (131 customer reviews)
  • Date first available at Amazon.com: July 12, 2012
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Product Description

Capacity: 4GB

Product Description

CT4G3S1339M is a single 4GB DDR3 Notebook module that operates at speeds up to 1333 MT/s and has a CL9 latency. It is dual voltage and can operate at 1.35-Volt or 1.5-Volt. It is Unbuffered and is non-ECC. It conforms to the industry standard SODIMM layout of 204-Pins and is compatible with computers that take DDR3 SODIMM memory.

From the Manufacturer

Crucial Memory for Mac

Compatibility for Mac systems.
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, we make it easy to find memory that’s been designed specifically for your system.

Reliability for Mac systems.
If you’re an Apple computer user, you probably expect intuitive, reliable performance from your system. We think memory should work the same way, too. For each module we manufacture, we send it through a rigorous testing process to ensure that you’re getting a reliable, high-performance memory solution. Every module that leaves our doors has been extensively tested at the component level for voltage and temperature resistances, signal integrity, and software compatibility. Even better, our modules are lead and halogen-free.*

Support for Mac systems.
Unsure how to install memory or have an important question about your Apple system? Let our team of experts help! With a tech-savvy team that’s well-versed in Apple systems, we’ll 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, we’ve got the resources you need to keep your system up to speed.

Crucial—quality you can depend on.
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, we work with our engineers to design, refine, test, manufacture, and support our extensive line of memory modules. With a product portfolio that includes more than 250,000 different DRAM upgrades for more than 50,000 systems, we’ve got one specifically designed for your Mac system. For more than a decade we’ve kept Mac computer owners happy with high-performance memory and outstanding customer service. No matter what type of Mac system you have, we’ve got a compatible solution.

* DDR3 modules only

Crucial Logo
Product Highlights:
  • Increases system performance
  • Compatible with Mac systems
  • Every single module extensively tested at the component and module level for functionality
  • Easy installation
  • Available in DDR2 and DDR3 SODIMMs in capacities up to 8GB
  • DDR3 modules include lead and halogen-free technology
Super simple installation image 1
Super...
Super simple installation image 2
simple...
Super simple installation image 3
installation.

Customer Questions & Answers

Customer Reviews

Easy to install.
J. Seawood
My applications in OS X are launching more quickly, and of course I'm able to keep more applications running simultaneously now without slowing down the system.
Adam Van Pelt
Worked for late 2011 macbook pro 15".
iUser

Most Helpful Customer Reviews

7 of 7 people found the following review helpful By Dennis Pinter on March 14, 2013
Size Name: 16GB KIT (8GBx2) Verified Purchase
I bought this for a mid 2011 imac. Apple states that the maximum ram in a 2011 imac is 16 gig, and each of the four slots are also limited to 4 gig each, with a total ram for all four slots being 16 gig.
Did as much research as possible seeing that most sellers of ram claim that the 2011 imac will take up to 32 gig, but more importantly 8 gigs per slot. So I took the chance and got 2 8 gig chips plus the 2+2 chips I had giving me a total of 20 gigs of ram.
Works great. Be careful to double check that you get the ram that is made for Mac.
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7 of 7 people found the following review helpful By Mellow Ninja on September 15, 2012
Size Name: 16GB KIT (8GBx2) Verified Purchase
I originally bought Komputerbay RAM because of the price, but they failed. Returned those and spent a few extra bucks on Crucial. Totally glad I did, because after running a few RAM tests, all tests passed and it has made a significantly noticeable difference with my macbook pro's performance. Very much recommended.
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5 of 5 people found the following review helpful By H. Friedman on March 14, 2013
Size Name: 16GB KIT (8GBx2) Verified Purchase
I upgraded from 2x2gb RAM to this 2x8gb RAM and had very little problems installing this product. After installation, I booted up my laptop and it immediately recognized that I had 16gb of RAM. However, once I opened Chrome, my computer froze. After a hard reset, I rebooted the laptop and I have since had no issues at all.

My computer is much faster. Next purchase.... a solid state drive!
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3 of 3 people found the following review helpful By Felipe on October 26, 2013
Size Name: 16GB KIT (8GBx2) Verified Purchase
i change my old 4gb (2 x 2gb) ram with this one 8gb (2 x 8gb) and now the laptop runs like a tunder. My adobe suite programms start faster and now i can use more programms at a time.
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2 of 2 people found the following review helpful By C. BYUN on March 2, 2014
Size Name: 16GB KIT (8GBx2) Verified Purchase
compared to the hynix sticks i took out of my late 2011 MBP, the crucials appeared slightly wider and i just barely got the second stick to snap in place. and no i didn't put it in backwards and no i'm not a total noob in terms of hardware. I've built four pcs and messed around with a few laptops so I'm pretty sure I know how to insert ram at this point. I even compared the original sticks to see if I wasn't putting it in at a wrong angle and BINGO i could immediately tell the pcb on these crucial sticks were cut a little wider. The hynix slipped in effortlessly by comparison. Seeing as how most people haven't had this problem maybe its an isolated incident but i was a bit disappointed. apart from that ram seems to function as intended. will run memtest at some point.
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2 of 2 people found the following review helpful By trustablerolin on May 12, 2013
Size Name: 16GB KIT (8GBx2) Verified Purchase
05/11/2013
-
I received this item pretty fast. Takes approximately 15-20min replace the memory. My Mac boot up pretty much same time (I had 4GB before). The best thing about this much memory is: nothing slow down! I run a lots of program with two screen at the same time and my Mac not even warm up like before.
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2 of 2 people found the following review helpful By J. Mulnix on December 12, 2012
Size Name: 16GB KIT (8GBx2) Verified Purchase
I just installed the RAM today and so far have had no problems. I have an early 2011 15" Macbook Pro and it supports 16 gigs no problem. I will update the review in the next month with my impressions.
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4 of 5 people found the following review helpful By Christopher Allen on November 5, 2012
Size Name: 16GB KIT (8GBx2) Verified Purchase
I purchased some cheap no-name memory to upgrade my iMac about a year ago and after noticing a few crashes and hangs, discovered that my memory had gone bad. So, I found this Crucial 16GB kit and purchased them immediately. As usual, Amazon is incredible and I received them within 48 hours of even considering getting new memory. So far I've been happy - no hangups or forced restarts. I'm using this memory in my late 2011 iMac 27" 3.4GHz i7 ontop of the 8GB Apple memory (probably Samsung memory) for a total of 24GB of RAM.
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Most Recent Customer Reviews