Hello, I want to compare the performance of various MBP over the years. Apple does not list the details of the CPU used in their MBP. Any reliable source for these models? i7 in MBP 2014 i7 in MBP 2015 (currently still being sold by Apple) i5 in MBP 2017 i7 in MBP 2017 How is the performance compared with each other? I wonder if i5 in MBP 2017 is faster than i7 in MBP 2014. Usually I buy the maxed out model but this time, it looks like laptops with i7 made the past two years have heat and throttling issues.