8GB Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac (Mid 2010, Mid/Late 2011 21.5/27 inch), Mac mini(Mid 2011) SODIMM MAC RAM Upgrade

I have an older iMac mid 2011 and I wanted to upgrade the ram from 16GB to 32GB and this did the trick. iMacs are easy to replace the ram on and this simple upgrade took me about 2 minutes. Honestly it took more time to disconnect the peripherals and get the computer off the desk than it did to replace the RAM! Once I booted everything back up it was instantly recognized and everything ran fine. The large format graphics I do for my job as a designer run smooth now, especially with the updates to the Adobe cloud needing a little more ram than usual to handle some of my larger projects for clients. Totally worth the money and not as expensive as it is from apple or other 'apple resellers' online.

IMac Mid March 2011 is officially (by Apple) designated to use 4 X 4GB. Our existing one had 2 X 4GB. The past Attempt to add additional 2 X 4GB was unsuccessful. (I had selected additional memory as per Apple specifications. I assume even though the official specifications were identical, in reality there was a mismatch between the existing 2 X 4 GB and new 2 X 4 GB.) This time decided to install all four slots with the same chips. Learned on-line that 8GB worked fine even though Apple mentions each slot is for 4GB. Installation was easy. The performance improvement is very noticeable, especially for memory hog applications such as Photos. The startup time has also significantly reduced.

To repeat: this was used in a MacBook Pro Early 2011 13" A1278 MC700LL/A. It works! I replaced one of the original 2GB modules with this and left one in and I now have 10GB. Performance is "satisfactory", ie, I don't perceive any slowing from the chip or the mixin'n'matchin' of the 2GB and this 8GB. Of course the overall everything is faster as one would expect, especially when a virtual Windows 10 session is also running. Note that I paired this upgrade with an SSD and between the two I ended up with a pretty adequate laptop.

They are probably great but you should be advised they will NOT work with a mid 2010 iMac with an i3 processor. I found out the hard way.

Memory arrived intact and was exactly as advertised. Easily installed the memory into my iMac 27'' Mid 2011 computer and it took the upgrade with no problems. The mac seems to be working several days with no problems, however, that said I have not stressed the system too hard yet. Basic internet and network file access has worked great so far.

I purchased this set for a MID 2010 27" IMAC with i7 2.93 ghz processor. If you check Apple's website, it will tell you that these iMacs are upgradeable to only 16GB Ram (4GBx4slots) But an extensive research I have done shown me that 27" iMac (Mid 2010) models with the i7 processor can actually work with 32gb Ram (8GBx4slots) instead of 16gb. So I decided to get this set 8gbx4 as it was matching all the other requirements of Apple. The rams were recognized by the system as soon as I turned on the computer, and they did make a big difference, upgrading from 8gb to 32 GB. I do stock trading so I have several apps open at the same time, such as discord, TDA Think or Swim, Webull, Youtube and more, all at the same time and the rams handle all that with absolutely no problem. It has been almost a week, but so far, I am very happy. I also exchanged the HD withSAMSUNG 870 EVO 250GB 2.5 Inch SATA III Internal SSD (MZ-77E250B/AM) and together with the ram update, they are working miracles.

great ram, very affordable

This is an early review just post installation, but everything went as expected and no kernel panics or other issues so far. Will post another update if something comes up but currently I see no issues. This is an excellent deal for 32gb of ram. I have this memory installed in my trusty mid-2011 27” iMac with a 2.7ghz i5 and 1TB ssd which I also recently installed into this old machine. The two upgrades together are proving to give this old beast a new lease on life and it honestly runs even better than it did originally when I first bought it. Highly recommend 👍🏻