The max memory supported by Apple is 8 GB. Some sources such as OWC, www.macsales.com say they have tested and stand behind 16 GB. But those two 8 GB modules are REALLY expensive. OWC is very good and I would trust them, but not for the price difference over the 4 GB modules. Open source office for mac lion. I have a early 2011 macbook pro 15' 2.0Ghz and I installed 2 8GB Corsair modules and it recognizes and works. But I have not, at all, noticed any improvement in the performance:-( I think If you upgrade to 8GB will do the trick. I have 16GB DDR3-1600 in my 2.3GHz Mid 2011 Mac Mini and it runs perfectly and passes all of the standard Apple ASD testing. If you are installing 16GB modules make sure to do memory testing because there is a higher defect rate in 8GB chips when compared to their 2GB and 4GB cousins.

• Apple Mac Pro Memory

Apple Mac Pro Memory

Apple says that I can upgrade my RAM from 4GB to 8GB (2x4GB RAMs). Is it possible to install 2x8GB DDR3 SoDIMM 1333MHz cards into my Mac? I went ahead and installed 16GB RAM ram in my Macbook.

It works fine, except for when I try to run Windows 7 Pro in bootcamp. It comes to the login screen then it stops.

Sometimes it just comes to a white screen. I think win pro7 can handle 192 GB REM, so what's the problem? Can it be the memory model? I bought Crucial DDR3 16GB 1333MHz SODIMM for Mac. Hey I added 16 gigs to my early 2011 MacBook Pro and did it ever-increasing performance.

It was a slug till I changed over the ram. I'm sure you can get a lot of extra speed with a SSD but why spend the money when you can improve the speed for fraction of the cost. Every time that I upgrade the OS the system seemed to slow down. It was placing so much into high memory on the ram that my machine was almost useless. Now the speed is right where I like it to be and I don't have any problems with it all.

Even the old problem of it searching the Wi-Fi every five seconds really is not problem. I bought the memory on Amazon and it was cheap and you can check on YouTube for instructions on how to replace it in your machine.

My MacBook Pro and my iMac both have 16 gigs and the old iMac is a I5 and the MacBook Pro is a I7. Try the memory first it's cheap and then decide whether you want a SSD. You may discover that the SSD is not needed. Good luck and happy repairs da. Look in Applications>Utilities to launch System Profiler, then check Hardware>Memory.

Does the system recognize both 8G sticks, or only one? Alternately, does it report both sticks as 8GB? Unless you bought them new from the retailer as 2x8GB, they may not actually be what you think they are. Also, are both sticks DDR3 PC- MHz speed?

Faster RAM may not work correctly; slower RAM will not work at all. If both sticks of RAM are marked with the correct speed and the correct size, then one of the sticks may be defective, in which case they should be returned to the retailer/manufacturer for warranty replacement. According to OWC, DDR3-1600 MHz RAM will work in 2011 Unibody MacBook Pros, although the speed will downscale to the 1333 MHz internal bus speed. 1600 MHz RAM will also work in 2011 iMacs. Based on my experiments with earlier-gen laptops, I would advise installing 1600 MHz SODIMMs in pairs, rather than mixing 1333 and 1600 RAM; I suspect that timing issues arise from downscaling one stick while leaving the other one running at full speed. I've been looking at the 1600 option for my own 2011 MBP, as it will allow me to transfer the 16GB into a 2012 machine later on. Confirmed, currently Mac: Mac book pro 15inch early 2011 4gb dfr3 1067 MHz 204 pin; yes I have too upgraded to 16Gb of ram in this MacBook.

Self installed the ram. Note to users, make sure you discharge the compactors prior to attempting this with a Mac reset on the computer and ground your self and use anti static protection as to not damage the computer. Make sure the memory is fully seated. Power up the computer and boot to your home page and check memory to verify after install by going to about this Mac to see the new installed ram number.

Putting 16GB of RAM in a computer is not like dropping a 600HP Hemi in a car It's more like adding a towing package to a car, truck or SUV if you're already pulling a big load a tow package (e.g. More RAM) helps get the job done more efficiently. Does that make sense? Paint pot mac. If you were not using ( Applications used in content creation applications like PhotoShop, Illustrator, Final Cut Pro) before the switch, then no you'll not notice a change after. RAM determines how many applications and how much data the Mac can keep track of without having to read from or write to the storage medium (access VMEM which slows a process down). The speed of e-mail or web browsing or playing music will not noticeably change after Maxing RAM. The machine is already running those Apps as fast a human can detect, and the App allow.