I've got a HP computer that's about 3 years old, seen here. I plan on buying a fully-loaded 21.5 iMac when the 2012 models are released. But I'm wondering how much of a performance jump I can expect. Any idea? Obviously, I expect the Fusion Drive to be a huge upgrade. But what about the processor? I realize it'd be a jump from the first generation to the third generation, but the GHz doesn't seem to be that much different (not sure how much that says about the performance?). The RAM would be an upgrade from 9GB to 16GB, so I imagine that'd be a noticeable speed jump. But isn't each GB of RAM also faster now than it was 3 years ago? With my current setup, I can't really say that there's anything that loads extremely slow. Photoshop takes a few seconds to load up, and it'd be awesome if that opened instantly. My browser will sometimes crash when I have like 50 tabs open at one time, but I guess that would have more to do with the browser (or maybe my internet speed?) rather than my computer specs (but I could definitely be wrong about that). Other than that, having my computer start up near instant would be great too. I hear the Fusion Drive can make that happen. So basically what I'm asking is... what should I expect with the 2012 iMac? Will I get noticeable improvements from my current PC?