Hey guys, first off a happy new year to everyone here at MacRumors. I have a late '11 15" MacBook Pro (the specs of which you can see in my signature), and I want to bump the ram up from 4GB to 8GB. Thing is, the shop that I want to get it at has "regular" Kingston 1333 8GB and "Mac-optimized" Kingston 1333 8GB RAM (it says For Mac on the cover). Does it make a difference if I install non-"For Mac" RAM on my MacBook Pro? Also is there a big difference between 1066 MHz and 1333 MHz? Thanks in advance y'all.