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.
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.