I have had Apples since the II+... about 45 years? I just got the i7 4.2Ghz imac with 2tb SSD... but am disappointed. Sure it's fast, but the fan is constantly going on even with very little usage. I have reset SMC and still nothing. Running a fan program showed CPU temps of 150 to 180 deg. when typing on a chat session and speeds of 2000 or more RPM with activity monitor showing only about 20 to 50% CPU usage and only about 5 to 6 of my RAM being used. Reading the forums... comments suggest the only answer is to return the unit. I tried a chat session and even though it's 11pm to MN. CST I waited 5 to 10 min for a response and then got disconnected.. not once but four times! Maybe I'm just getting old, but in the old days, the computer worked great and if there was a question you may have gotten disconnected but they would contact you back. Tonight none of the chat helpers tried to email me.... all very disappointing. I can cut down on the fan noise using a fan control program, but then may run the risk of overheating the CPU and ruining my unit.... so I guess it's return time for the new imac?!