My fat ps3 still lives on to this day. 60gb launch with backwards compatibility. I professionally repair these systems and suggest that anyone with a still working console to replace the thermal compound on the gpu(RSX) and cpu(BBE). It will give you tons more life and you will not believe how quiet your console will be afterwards. (ALL models) I personally use MX2 Thermal compound. It is not electrically conductive (unlike Arctic Silver 5 which I use on pc builds) and works very well with a durability of at least 8 years.
My original 20GB PS3 with backward compatibility still works like the day I bought it
Same here, although I upgraded the hard drive a couple years ago. Everyonce in a while, I get game freezes and hard reboots of the system, happens more with certain games (looking at you EA Sports), so it may be hardware independent.