|RAM||8 GB DDR3 SDRAM|
|Memory Speed||1333 MHz|
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Crucial 8GB Kit (4GBx2) DDR3/DDR3L 1333 MT/s (PC3-10600) SODIMM 204-Pin Memory For Mac - CT2K4G3S1339M
- Enter your model number to make sure this fits.
- Increases system performance
- Compatible with select Mac systems
- All memory stick modules extensively tested at the component and function level
- Meets or exceeds, Apple's quality standards and requirements
- Easy installation
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From the manufacturer
- Improve responsiveness
- Run apps faster
- Multitask with ease
- Compatible with more than 70 Mac system models
Compatible With Mac Systems*
Take the guesswork out of upgrading your Mac with Crucial memory for Mac systems. Since Apple computers often have very specific memory requirements, including particular component densities, speeds, and SPD programming specifications, it’s important to use memory that’s engineered for your Mac. With more than a decade of experience manufacturing and developing memory for all types of Apple computers, trust Crucial memory to optimize your Mac system’s performance.
Reliability for Mac systems
When you use your Mac system, you expect intuitive, dependable performance. And if you’re a Mac Pro user, you expect mission-critical workstation reliability. Expect the same out of your memory. 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, modules are lead and halogen-free.*
Speed and energy efficiency for Mac systems
A memory upgrade is the fastest, easiest, and most affordable way to get more performance out of your Mac system. Standard DDR3 modules help Mac systems reach speeds up to 1600 MT/s. For newer Mac systems, DDR3L modules are available. These modules deliver speeds starting at 1866 MT/s and use 10% less power for improved energy efficiency. And get even better system responsiveness with faster speeds, bandwidths, and performance for systems that support DDR4 memory technology, like the latest iMacs
Support for Mac systems
Unsure how to install memory or have an important question about your Mac system? Let our team of experts help! Our team knows Apple systems and requirements inside and out, and we’ll provide the technical support you need – no matter which Mac system you’re using. From phone support, videos, FAQ articles, and do-it-yourself install guides for more than 70 different Mac systems, we’ve got the resources you need to keep your system up to speed.
Micron quality - a higher level of reliability.
As a brand of Micron, one of the largest memory manufacturers in the world, Crucial memory for Mac systems is backed by the same quality and innovation that has produced some of the world’s most advanced memory and storage technologies. With a product portfolio that includes upgrades for more than 100,000 systems, we’ve got one specifically designed for your Mac system.
*DDR3 and DDR3L modules only.
Note that per Apple manufacturer specifications, memory can’t be upgraded on (a) many Mac systems made after mid-2012 and (b) retina-based models. Before upgrading your memory, consult your owner’s manual to verify that an upgrade is possible.
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Timetec Hynix IC Apple DDR3 1333MHz PC3-10600 Non-ECC 1.5V CL9 2Rx8 Dual Rank 204 Pin SODIMM Laptop Notebook Computer Memory Ram Module Upgrade (High Density 8GB Kit (2x4GB)).
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|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||$3.00||FREE Shipping|
|Sold By||Amazon.com||Amazon.com||Timetec||Amazon.com||ETARATECH||Highly Anticipated Electronics|
|Capacity||8 GB||8 GB||—||16 GB||—||8 GB|
|RAM Size||8 GB||4 GB||8 GB||8 GB||8 GB||4 GB|
|Item Dimensions||4.49 x 7 x 5 in||0.48 x 0.18 x 0.94 in||0.2 x 2.66 x 1.2 in||2 x 13 x 7.13 in||1.57 x 4.33 x 0.39 in||2.72 x 1.18 x 0.12 in|
|Memory Clock Speed||1,333 MHz||1,333 MHz||—||1,333 MHz||1,333 MHz||1,333 MHz|
|Memory Speed||1,333 MHz||1,333 MHz||1,600 MHz||1,333 MHz||1,333 MHz||1,333 MHz|
|Memory Storage Capacity||4 GB||8 GB||8 GB||8 GB||8 GB||8 GB|
|Number of Items||2||1||—||1||2||1|
|Number of Pins||204||204||204||204||204||204|
|RAM Technology||DDR3 SDRAM||ddr3_sdram||DDR3 SDRAM||DDR3 1333||ddr3_sdram||DDR3 1333|
|Size||8GB KIT (4GBx2)||8 Gb||High Density 8GB Kit (2x4GB)||16 Gb||8 Gb||8 GB|
|RAM Type||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM|
CT2K2G3S1339M is a 8GB kit consisting of (2) 4GB DDR3 Notebook modules that operates at speeds up to 1333 MT/s and has a CL9 latency. It is dual voltage and can operate at 1.35V or 1.5V. 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.
Legal Disclaimerno responsible for incompatability- item description is accurate
Top customer reviews
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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 ]
[ ] [ ]
[ 2 GB ] [ 2 GB ]
[ 8 GB ] [ 8 GB ]
Hope this helps!
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.
OS X Yosemite 10.10.1
Wanted to upgrade from the base 4GB of RAM provided by Apple. Looking for better performance. Interesting problem upon installation.
Attempt One: Original two 2GB DIMMs were in BANK 0/DIMM1 and BANK 1/DIMM1. Added the new Crucial 4 GB DIMMs to open slots for BANK 0/DIMM0 and BANK 1/DIMM0. Upon startup, the iMac blared the warning horn. Annoying sound. Had to power down holding the power button.
Attempt Two: Swapped one each of the two sets so the DIMMs were in the same banks. Once again the horn alarm upon startup. Power down . . .
Attempt Three: Loaded only the new two 4GB DIMMs in BANK 0/DIMM1 and BANK 1/DIMM1. Booted up fine. “About this Mac” showed 8GB total RAM. Success with new Crucial RAM.
Attempt Four: Keeping the two new Crucial 4GB DIMMs in BANK 0/DIMM1 and BANK 1/DIMM1, loaded the two original 2GB DIMMs into the DIMM0 banks. Booted up. Worked fine. “About this Mac” showed 12GB total RAM. This was the intended end goal. Success with both old Apple/Samsung RAM and new Crucial RAM.
Odd that the old RAM had to be relocated to the open slots. Specs between old and new did match, DDR3 1333 MHz. Have always had success with Crucial RAM in both PCs and Macs. Will continue to recommend Crucial.
Hope this helps other do-it-yourselfers.
With the help of a small screw driver, I used this RAM to upgrade my memory from 8gb to 16gb, by filling the remaining 2 slots. (located directly beneath the display) The whole process took 15 minutes (minus the 2-day shipping:) and the Crucial memory has proven to be completely compatible with my iMac.
I frequently work on 1-1.5gb Photoshop files and I have gotten no memory warnings since installing the Crucial RAM kit.
If you have an aging iMac, I would recommend this Crucial RAM kit to coax a little more life out of it.