I bought the 13'' MBP 2.4 ghz coreduo and I run GNS3 which is a processor intensive program. My cpu is usually running at 75-90%. I am thinking about getting the 2011 15'' i7 quadcore with a SSD, but I am not familiar with the quadcore technology. Will the i7 quadcore handle cpu intensive programs a lot better then my current MBP? Also, will I noticed a tremedous difference in speed? I will be using my MBP for email, web surfing, iTunes, watching movies and running GNS3. Please excuse my ignorance... Thanks in advance!