I've read a bunch of threads about this that say it's best to future proof your laptop with 16GB of memory because it's not replaceable. Most of the people asking the questions say their MBP barely uses 8GB, but the people that say 16gb is the way to go say so because future apps may demand that much memory. Here's my question: Even current apps are pushing the limit on the rMBP's GPU and CPU - it can't actually run some of the high-performance "modern apps." But are there any modern apps that bottleneck the ram? No. So assuming apps will demand better hardware as the years go by, wouldn't the demand in CPU and GPU power increase as well as the demand for ram does? I think by the time any user requires 16gb of memory to use apps, their graphics card and processor will be so outdated it will not even matter how much ram they have since they will only be able to run the apps designed for < 8gb ram since those will ask less of other hardware components. Another question: As of right now, is there any way to pass the 8gb ram limit? EDIT: The main reason I'm asking is because if I get 16gb I will have to wait 4 weeks to get the laptop - they have a 2.6 8gb model in stores now.