Crucial Technology 4GB, 204-pin SODIMM, DDR3 PC3-10600,

Recently my MacBook Pro 17" had an issue with the Processor that caused the video card to burn out. It seems that Apple had a known issue with the Radeon Chips causing problems and they fixed it for me at no charge. However, they did do a DX check in the repair shop and it seems that one or two of my RAM sticks were having issues. AND - much to my dismay, they made the choice of replacing my 16gb of RAM with FOUR gb of RAM!!! The 'genius bar worker' even told me that they put in a new kind of RAM, and that my machine would be up and running like a new MacBook Pro.NOPE that was not the case! They replaced 16gb of 1333htz DDR3 RAM - with the EXACT specs of mine with only 4gb of the exact RAM but in a different non known brand name (I was told in the store that it was Apple Ram memory) there was no such thing in my machine. The choice that I now had for my slow as molasses machine was to order new NAME BRAND memory. And, Crucial is the ONLY name as far as we're concerned in our home. (the RAM that had a couple of sections blow out, that was in my machine was NOT crucial, it was also a generic brand that I got when I first started to upgrade my machine, and at that time, NO Crucial was available to me as there was a wait list, and they had no idea how long it would take. And in their defense, it did last for almost 4 years! But, Crucial is STILL our go to name brand RAM choice, and I am super pleased that they have dropped prices, and upped manufacturing to assure that there is no back ups for RAM needs.My MacBook Pro is up and running like a fantastic NEW machine out of the box - I know that I now have at least four or five years on my rebuilt machine - and that makes me a happy person for sure!

Lo compré para una MacBook Pro del 2012, y funcionó perfectamente, solo quitar y poner

I got this to upgrade my late 2011 15" MBP (2.2g i7). I originally had 4GB, but it wasn't enough when I'm working on a lot of things have multiple Chrome tabs open, Word, Acrobat Pro, Photoshop, Illustrator, Spotify, and Evernote occasionally. I still had Mountain Lion and wanted to upgrade to Mavericks. Plus, a friend gave me ProTools 10 since I wanted to experiment with recording and editing some music. So, I definitely could use a memory upgrade...Apple said that that my machine can only only be upgraded up to 8GB, until I read from others that a 16GB works. Then I went to the Crucial site, ran their memory advisor, and this kit came up on top of the result. Before purchasing, I've read some opinions that the difference between a 16GB and an 8GB is hardly noticeable. However, since I plan on eventually replacing my HD with a SSD, and just for about $60 more, I just went for this 16GB kit. Much cheaper and less hassle in the long run if you plan on upgrading to 16GB later. I don't know about you, but I prefer to have same size ram for each of the slots, which is also recommended anyway...And did I mention it was SUPER easy to install? Just follow the instructions on the Apple site and make sure everything's properly inserted as there's kind of a trick to it (you'll hear a click/snap that tells you it's in). I guess my only advice is to be gentle from when you open the case to removing the old memory, especially on the first time. There are times when it feels like something won't budge. Instead of going full force, just gradually increase pressure and you might have to wiggle some stuff a bit. It also helps to have the right tools, especially if you don't want to void your warranty...So, with the 16GB memory and a clean install of OS X Mavericks, my MBP runs 3/4 times faster. Adobe CS apps load within 3 seconds and there's no lag when switching in between apps. I've had the memory kit installed for about 3 months now, and I never had any problems, nor have my machine get really loud (and sometimes hot) when running intensive applications. I'm a happy panda so far!

Jumping from the factory original skimpy 4GB of RAM memory all the way up to 32GB of memory with two of these 2X8GB Crucial memory kits was incredibly beneficial for my 27" mid-2011 iMac which I use many hours each and every day and rely upon for both work and fun. I did the upgrade several weeks ago and have never looked back. Now, I have no more pinwheels or spinning beach balls. No more cherry red moving blocks in the "memory" section of Activity Monitor -- just a skinny green line near the bottom of the box. No more buffering for videos. No more nagging error messages with browsers. No more required "force quit" actions. No more unwanted restarts. No more waiting and waiting and waiting for files to load. No more sluggish Time Machine backups. No more annoying crashes or freezes. I can (and do) use two different memory-hungry browsers at the same time with more than 20+ tabs open in each one with absolutely no diminution in performance and huge chunks of memory available to spare. And opening three or four other memory-heavy programs at the same time the browsers are open makes no difference at all to the operation of the iMac.This was an easy fix and an easy task to complete for someone who is usually not comfortable doing these kinds of things with electronic devices. The process takes about five minutes and is carefully explained in full detail in manufacturer's pages and in helpful YouTube videos available everywhere. Everything worked exactly as prescribed without any glitches or unexpected problems. So, again, "do it now" if you are having problems with your computer and have only the minimum memory supplied by the manufacturer. That's not enough for today's programs, apps and operating systems, and this fix really works.