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Crucial 16GB Kit (8GBx2) DDR3L 1333 MT/s (PC3-10600) CL9 204-Pin SODIMM Memory For Mac CT2K8G3S1339M / CT2C8G3S1339M

4.7 out of 5 stars 1,537 customer reviews
| 306 answered questions

List Price: $91.99
Price: $82.99 & FREE Shipping. Details
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16GB KIT (8GBx2)
DRAM
    This fits your .
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  • Increases system performance
  • Compatible with Mac Systems
  • Premium quality memory from a trusted brand
  • DDR3 Low Voltage / DDR3L DRAM
  • Limited Lifetime Warranty. Please refer below (PD) for compatibility info.
148 new from $82.99 2 used from $85.00
$82.99 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Crucial 16GB Kit (8GBx2) DDR3L 1333 MT/s (PC3-10600) CL9 204-Pin SODIMM Memory For Mac CT2K8G3S1339M / CT2C8G3S1339M
  • +
  • Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1
  • +
  • StarTech USB 3.0 to 2.5" SATA III Hard Drive Adapter Cable w/ UASP - SATA to USB 3.0 Converter for SSD/HDD
Total price: $214.37
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This item Crucial 16GB Kit (8GBx2) DDR3L 1333 MT/s (PC3-10600) CL9 204-Pin SODIMM Memory For Mac CT2K8G3S1339M / CT2C8G3S1339M
Customer Rating 4 out of 5 stars (1537) 5 out of 5 stars (1134) 5 out of 5 stars (4009) 4 out of 5 stars (700)
Price $82.99 $78.48 $78.99 $86.46
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com
Memory Storage Capacity 8 GB 1 GB 8 GB 8 GB
Capacity 16 GB 16 GB 16 GB 16 GB
Item Dimensions 0.44 x 7 x 5 in 0.38 x 1.18 x 2.66 in 4.49 x 7 x 5 in 2 x 13 x 7.13 in
RAM Size 8 GB 16 GB 8 GB 8 GB
Number of Items 1 2 1 1
RAM Memory Technology DDR3 SDRAM DDR3 DDR3 1333
RAM Type DDR3 SDRAM DDR3 SDRAM DDR3 SDRAM DDR3 SDRAM
Size 16GB KIT (8GBx2) 8GB KIT (4GBx2) 16GB KIT (8GBx2) 16 Gb
Add to Cart Add to Cart Add to Cart Add to Cart

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Product Information

Capacity:16GB KIT (8GBx2)  |  Style:DRAM

Technical Details

Collapse all
Summary : Screen Size, Screen Resolution, Graphics Coprocessor, Graphics Card RAM
RAM 8 GB DDR3
Memory Speed 1333 MHz
Brand Name Crucial
Item model number CT2K8G3S1339M
Item Weight 1 ounces
Product Dimensions 7 x 0.4 x 5 inches
Item Dimensions L x W x H 7 x 0.44 x 5 inches
Computer Memory Type DDR3 SDRAM
Voltage 1.5 volts

Technical Specification

Warranty [pdf ]

Additional Information

ASIN B008LTBJK2
Customer Reviews
4.7 out of 5 stars 1,537 customer reviews

4.7 out of 5 stars
Best Sellers Rank #12 in Computers & Accessories > Computer Components > Memory
Shipping Weight 1 ounces (View shipping rates and policies)
Date First Available July 12, 2012

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here [PDF ]

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Marco Garibay on December 9, 2014
Style Name: DRAMSize: 16GB KIT (8GBx2) Verified Purchase
I've added this pair of memory modules to my iMac 27-inc, Mid 2011, to upgrade from 4 GB to 20 GB of total RAM.
Despite the Apple documentation claiming that 16 is the maximum capacity for this model, I researched and found that you can max out to up to 32 GB.
For those people that have no clue (like me), the installation was really easy:
1 - Turn off your iMac. Touch the iMac frame to discharge you (electrostatic), and unplug it from A.C. Place your iMac "face down" in a towel.
2 - unscrew the 3 bolts from the memory bay at the bottom of the iMac, remove the memory cover.
3 - leave the 2 RAM modules in their slots (I had 2 RAM modules, of 2 GB each).
4 - Insert the NEW 2 RAM modules (8 GB each) in the 2 available slots.
5 - Screw the 3 memory cover bolts, get it up back in place and turn it on. That's it.

By looking at the "About this Mac > Memory" screen, I went from:
[ 2 GB ] [ 2 GB ]
[ ] [ ]

To:
[ 2 GB ] [ 2 GB ]
[ 8 GB ] [ 8 GB ]

Hope this helps!
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Style Name: DRAMSize: 8GB KIT (4GBx2) Verified Purchase
In a word OMG. Why the heck did I wait over 2 years to do this!!!!! I have a mid 2011 mac mini that came with the lame 2GB. I HATED how slow that machine always was (and especially after mavericks came out).. It crawled on Yosemite, so being a tech, I knew memory would help. I HAD NO IDEA IT WOULD MAKE THIS THING SIZZLE.. Crucial is the go to brand anyway and the install literally took me 20 seconds, but that's due to the mac mini easy access. However, great product and great price!
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Style Name: DRAMSize: 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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Style Name: DRAMSize: 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.
4 Comments 61 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: DRAMSize: 16GB KIT (8GBx2) Verified Purchase
Works like a charm, went from 4gb on my iMac to the max of 16gb. It is a mid 2011 iMac 21.5" it made a drastic change and installed very easily through the bottom plate on the iMac. The tabs you pull on to remove the old ones are a bit tough. Just use a firm steady amount of pressure and they'll come out.
5 Comments 30 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: DRAMSize: 8GB KIT (4GBx2) Verified Purchase
I have a MacBook Pro 13-in Late 2011 running OS Yosemite. Before buying this ram I checked my "Activity Monitor" and found that I was constantly using 3.8-3.9 of my 4 GB of RAM. Seriously lagging. I received the package in 2 days and installed 8 GB in about 10 minutes. Amazing results! I'm not watching all my icons bounce around and waiting for them to open. I HIGHLY ENCOURAGE you to upgrade to 8 GB. It's just night and day.
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Style Name: DRAMSize: 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!
3 Comments 32 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: DRAMSize: 16GB KIT (8GBx2) Verified Purchase
When I initially bought this for my early-2011 MacBook Pro (15"), it was an easy insertion and made my computer run beautifully. Combined with the new SSD I installed simultaneously with the RAM (4x the original), it felt like a new computer.

However, small glitches started to appear over time. At first weird graphic glitches when using expose that required some coding done through terminal to reset the screen without force restarting the computer. Then outright freezes and difficulty shutting down and starting up. The graphic issues piled up. Starting the mac with safe starts, checking the mac with disk utility, resetting the SMC and PRAM, and running hardware tests and memtest did nothing to fix the situation. In fact, the use of memtest froze the computer while going through the memory.

I had mercifully kept my old two 2gb sticks in the plastic casing these two pieces came with. I swapped them out and the computer no longer froze. I ran some recovery and tried to switch back to the 16gb just in case I had missed some fix but nope, the hanging returned when these were placed back in the computer. Sigh, it was a lovely month and a half when they worked like a charm.
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