We can upgrade this machine to 8GB of RAM as it has been thoroughly tested in our labs. The MacBook 6,1 was released in Late 2009. This is perfect for those who like to keep a lot of apps or browser tabs open at the same time. It's published system maximum is 8GB although we can upgrade this machine to 16GB of RAM as it has been thoroughly tested in our labs. This MacBook Pro 7,1 was released in Mid 2010. The models below are oldest ones that still qualify for a macOS Sierra upgrade. In general, 4GB of Memory is a minimum requirement, 8GB of Memory is recommended, and 16GB or more is ideal because it gives you enough room for most of your other applications. If you aren't sure whether you can upgrade to macOS Sierra, take a look at some of our recommendations.
