With the fat ps3 you could also install Linux on it if you wanted to, now I own a 40Gb ps3 (installed Linux and a 500Gb hard drive) and I have had no issues with fan noise it stays at level 1 fan speed while playing games,watching movies,sufering the net. I'm not talking about having it run for a few hours more like 12 to 15 hours on weekends and 5 to 6 hours through the week.