Well I guess by now yawl know I own the PS3 40GB
I must admit that I have mine all cooped up in an entertainment center lying horizontally. In fact once it gets heated up, this things fan noise is pretty dang loud in my opinion, I think it makes more noise than my hot rod PC which has 5 fans. HOWEVER, when it is in use, with the audio set reasonable say, -20 or so, you can't hear it. In the same cabinet I have my amp, the my Pio 92TXH Elite, which I think runs rather cool and it resides on the bottom slot. With both on, I have to leave to door open on the Entertainment Center so air can circulate. At least I have the PS3 at the top slot which does have an opening in the back for air. Never the less the cabinet gets ahhh warm to what I think hot, when the PS3 gets hot, that fan rocks the house, if nothing else was running, you can hear across my family room. So in conclusion I have decided to use a pair of PC 120mm fans I have laying around and just hook them up and have them suck hot air out the back. After these mods, I'll report on if it helps any. Also considering perhaps moving PS3 out of the cabinet and/or figure out away to perhaps stand it up vertically.., bottom line I need to address this issue, hmmm to be continued..