Hi, I am thinking about buying the 2012 Macbook Pro in its 15 inch non-Retina incarnation. I definitely want the 2.6GHz 3720QM CPU (at the least) because this will upgrade the graphics memory to 1GB (which cannot be upgraded after purchase and might trouble me when running the Thunderbolt display and 3D). As far as i can see, the only differences between 3720QM and 3820QM (the 2.7Ghz option for a whopping 270 Euros) are 100Mhz higher frequency (both on stock and on turbo frequency) plus 2MB larger third level cache. Are there any more differences on the CPU? Does the upgrade from 2.6 to 2.7Ghz imply any more changes on the Macbook? I assume the upgrade is not worth the money unless you do hefty processing (which i usually dont do)? Any pros/cons or can i safely safe the 270 bucks? I nderstand that for the highest-end model you pay more, even mor than in relation. On the other hand, my high end 2010 MBP 2.66 i7 8GB is still well-suited for daily work and i understand the 270 are only a small fraction of the complete purchase... I am doing system administration, programming (Java/Xcode/Web), VM, web research and a whole bunch of what-you-do-with-a-computer (Aperture, Final Cut,...). Thanks for any help!