I have an Early-2008 15in MBP with a NVIDIA GeForce 8600M GT 256 MB running 10.8.5 My computer runs extremely hot, loud, and slow while on Netflix and even doing simple things like running Chrome with 5 or so tabs open. I've checked the Activity Monitor and nothing is hogging abnormal amounts of CPU activity. I've been contemplating an upgrade and have searched far and wide. I've found out I still can't find anything that will tell me if upgrading to a MBA with a Intel HD Graphics 5000 will truly be a step down. Would I be better off purchasing an SSD and seeing performance (and cooling) results?