Hello, I'm still quite new to this Mac thing so excuse my innocence in this regard. A co worker of mine mentioned that a i5 sandy bridge processor is far superior to a regular i7 processor. Couple questions popped up from this. I bought my MBP (see sig) in July 2011 I believe this has the Sandy bridge processor. Is that correct? What exactly is this Sandy bridge? Is it something like Centrino or Pentium 4 in the PC world? (this may be a stupid question) Is the sandy bridge much faster than the regular i7 model? Is there a specific name for the i7 model?