I replaced my 2012 15" MBPr after 5 years with a 2017 only because it kept overheating and throttling, but in day-to-day use, the performance difference was rea

I replaced my 2012 15" MBPr after 5 years with a 2017 only because it kept overheating and throttling, but in day-to-day use, the performance difference was really hard to notice. Biggest difference was probably in graphics performance when using an external display.