Chosen Solution

The last three figures of my serial number is 9VV. I bought the base model of Mac Mini with 2x2GB ram. I plan to upgrade and replace one of the 2GB with a 8GB ram. I read in one of the support answers that “RAM should be installed in pairs or the machine will suffer true performance set backs.” Does this mean they should be of the same capacity as well? Will it affect the performance if I use a 8GB ram in one slot and a 2GB ram in the other?

9VV didn’t bring a machine up. If you have the 2012 model it uses RAM Type: PC3-12800 DDR3 Min. RAM Speed: 1600 MHz Traditionally you gain what called interleaving with two identical chips giving about a 10% gain. Put the 8 GB chip in the A slot. Unless you are doing really intensive tasks such as PhotoShop rendering, your machine will never go past the first chip. Use a program like Hardware Monitor to see just how much of a load you are putting on your machine and then determine if the RAM you have is sufficient or maybe just a 4 GB chip would suffice. http://www.bresink.com/osx/HardwareMonit