These 21.5" and 27" systems utilize one of the following processors:
3.06GHz Intel Core 2 Duo, 3.33GHz Intel Core 2 Duo, 2.66GHz Quad Core Intel Core i5 or 2.8GHz Quad Core Intel Core i7
A 3.5" bracket is required to mount the SSD in your system. Our part number for the bracket is CTSSDCONVT.
|Specs||DDR3 PC3-8500 CL=7 Unbuffered NON-ECC DDR3-1066 1.35V 512Meg x 64 lead free halogen free for Mac|
|Bullet Features||Increases system performance|
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.1
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.
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.
*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.
1DDR3 and DDR3L modules only.
REVIEW SNAPSHOT®by PowerReviews
Most Liked Positive Review
My MAC had been running really poorly, and I realized I could quadruple the amount of memory. I ordered the additional memory, installed it easily, and it's working GREAT! It was also...Read complete review
My MAC had been running really poorly, and I realized I could quadruple the amount of memory. I ordered the additional memory, installed it easily, and it's working GREAT! It was also less than half the price quoted by a local shop.
Most Liked Negative Review
works ... probably have to put 50lbs. of
it works.. you have to put probably 50lbs. of pressure to get the ram into the computer.... almost feels like your fingers are gonna come off.... wish there was...Read complete review
it works.. you have to put probably 50lbs. of pressure to get the ram into the computer.... almost feels like your fingers are gonna come off.... wish there was an easier way... but i'll forget about this the next morning.
Reviewed by 22 customers
I bought for of these 4g sticks to upgrade my Late 2009 i7, 27" iMac from 8 to 16 GB. The instructions online were simple and easy to follow. I had no problem removing the old and installing these new chips into the computer. I did however get a little nervous while trying to remove the SODIMM from the plastic package. It was so tight I was sweating bending/breaking the module while trying to remove it. In the end though, all was fine. my computer fired up and recognized the 16 GB right off.
Thanks Crucial. Next step is SSD in place of DVD drive and Fusion Drive.
So glad I purchased extra RAM for my iMac. I recently upgraded to macOS Sierra and found my computer would freeze up and the mouse was very jittery. After installing an additional RAM card (doubling from 4gb to 8gb) I haven't had a single issue.
Product was as described, excellent packaging, shipped on time, and easy installation in my 1Mac.
Bought Crucial few years ago and they're still best around.
A big help when I needed more memory to upgrade my OS.
Ez to reference right RAM cards for purchase
Went from stock 4 RAM to max 16 and got the speed bang for the buck I was hoping for.
Based on above, repeated for wife's 2009 late iMac. Same wonderful results.
Why did I wait so long to do this simple upgrade in performance?!?!
Solved the spinning wheel on my word docs too!
Much quicker now in all RAM uses
The plastic imac RAM pull tabs on the Mac took quite a strong tun to eject the old cards and you have to use very firm pressure to seat the new ones in. Total time < 15 min per imac.
Ordered this 4 gig stick for iMac . Have ordered many items in past and have never been disappointed. Fast shipping.
great. big performance difference.very happy.
Ordered RAM. Came quickly and was very reasonably priced.
Upgrade for a 27" 2009 iMac i5
Exactly what i expected
Very happy with my purchase