Hey I have a quick question. My girlfriend has the 2012 13" MBP which came with 4GB ram at 1600 MHz at, I believe, 1.35v. My MBP is from early 2011 and I have 8GB ram but it's only 1333 MHz, which is supported by the 2012 MBP, but it's also at 1.5v I think. So the issue is that I want to upgrade mine to 16 GB and give my old 8 GB sticks to my girlfriend... will there be any noticeable issues? I'm not worried about the FSB, but the voltage?