A 3.5" bracket is required to mount the SSD in your system. Our part number for the bracket is CTSSDCONVT.
21.5" - 2.5GHz Intel Quad Core i5, 2.7GHz Intel Quad Core i5, and 2.8GHz Intel Quad Core i5
27" - 2.7GHz Intel Quad Core i5, 3.1GHz Intel Quad Core i5, or 3.4GHz Intel Quad Core i7 processor.
|Total Capacity||8GB Kit (4GBx2)|
|Specs||DDR3 PC3-10600 CL=9 Unbuffered NON-ECC DDR3-1333 1.35V 512Meg x 64 lead free halogen free for Mac|
|Bullet Features||Increases system performance|
To use DDR3 memory, your system must have both a 204-pin SODIMM slot and a chipset that supports DDR3 memory. A DDR3 SODIMM will not fit into DDR2 or DDR memory sockets.
SODIMMs are smaller and thinner than regular DIMMs, and the 204-pin SODIMM PCBs are always ~2.6 inches long and are usually around 1.18 inches high (though the heights can vary slightly). They consist of a number of memory components (usually black) that are attached to a printed circuit board (usually green). The number of memory components on a 204-pin SODIMM's printed circuit board (PCB) can vary, but the PCB will always have 102 pins on the front and the back both, for a total of 204 pins. The gold pins on the bottom of the SODIMM provide the connection between the memory module and the memory socket.
REVIEW SNAPSHOT®by PowerReviews
Most Liked Positive Review
Much Faster Performance
Installed the memory on my IMac 2011(2x4GB), leaving the two original 2x2gb blocks inside. System started up normally and recognised the upgrade. As I am a gamer, I loaded up an...Read complete review
Installed the memory on my IMac 2011(2x4GB), leaving the two original 2x2gb blocks inside. System started up normally and recognised the upgrade. As I am a gamer, I loaded up an MMORPG and, at first, it seemed to have dropped framerate a little. However, after about ten minutes, I was able to tune up my graphics settings from a slightly customised "good", to a customised "ultra". I still had to turn shadows and lighting effects down a bit, but on 12GB this isn't bad. I went from having framerate spikes and instability at 4GB, to a really smooth performance.
I cannot wait until I replace the original 2x2GB with some more of these 2x4GB blocks, up to a total of 16GB RAM, and find out how much more I can run!
I nearly bought these from another retailer online, but I decided to find the supplier directly (here!) and spent less than I would have done otherwise.
Cannot fault anything as my system is stable.
Most Liked Negative Review
Caused iMac to repeatedly crash
My iMac had been operating perfectly, no matter how many programs I had open. I replaced the existing ram with the upgrade, moving the existing apple ram to what where then the two...Read complete review
My iMac had been operating perfectly, no matter how many programs I had open. I replaced the existing ram with the upgrade, moving the existing apple ram to what where then the two empty slots. Immediately the iMac began crashing, regardless of what program's were open or how many were open. I swapped the slots the upgrade chips and existing chips were in (so the upgrades are now in what were the 2 originally empty slots. The iMac still crashes but less frequently than when the chips were the other way round. Whilst there is a noticeable performance speed increase, the system now seems fragile and the risk of lost work eg when editing movies is much greater.
I will persevere for a little while longer, but most probably remove the upgrade and ask for my money back.
Reviewed by 42 customers
Product arrived in good condition, extremely easy to install and works well as expected
Helpful Installation Advice - Better than Apple Provide
I used to have 4GB of RAM which was good enough back when I bought my Mac with OS X Lion. But now we have El Capitan and it's lot more memory hungry. I've noticed immediate speed boost after adding another 8GB of RAM. Application open faster, everything seems to work faster and I hardly ever see any compressed memory, and even if I do, it's always very small amount of compressed memory. I'd definitely recommend this product.
Less coloured wheels and much quicker shut down!
When installing new memory boards you need to be bold with the finger pressure needed to engage contacts.
Seems fine. They work - how well I know not.
My 2011 iMac had 4Gb memory and worked very well, but when I purchased an upgrade of 8Gb from Crucial, there was an immediate improvement in speed, particularly when multitasking.
Easy to install on a mid-2011 iMac. Now it's as fast as it was when I bought it
I found the process of pushing the memory modules in difficult for me; it would help if there was something to protect your fingers/thumbs as the module edge is very sharp. Very pleased with Crucial on ordering and prompt delivery.
This is my second RAM purchase from Crucial for different machines and both sets have been instantly recognised by the respective systems and perform flawlessly.