I have the early 2011 15" MBP, 2.2 GHz, i7. Right now I have 4 GB RAM. When I look on Apple's support site, it says that for my model, 8GB of RAM is the maximum. But when I use Crucial's tool for determining compatible upgrades they have a 16GB kit that they say is guaranteed. Can someone explain this? If I were to put in 16GB would that cause a problem? (I'm probably going with 8 - doubling the current memory seems like it would be more than adequate, but I'm just wondering).