I was wondering about this since last year when I upgraded my memory. I actually upgraded for 4X 4GO instead of 1GO everywhere, so I'm now with 20GO overall. The thing is, I didn't really saw a difference when I upgraded, and to be honest I still didn't really see one (sometimes a couple of applications running at the same time (Premiere/Photoshop/After Effects/Maya and it's still slow). I was wondering if it's because I needed to upgrade something else to affect the performances of the RAM or anything else I can do to see a result, or it's actually normal and it's just an impression? Here's what it looks like: Thanks!