I have an I7 920 based rig in an Antec 300. I set all the system fans (Antec 3 speed ) on low except the side fan at medium and my idle system temp is currently 41 degrees celcius. The side fan is set as an exhaust fan because when I set it for intake system temp went up. At load with my 3 4850s pushed hard I've noticed temps approaching 50 degrees Celcius at times. (They are single slot and blow air instead of suck air like dual slot setups) The game I've been using to really test heat is Jericho. That game quickly shoots temp up in a hurry and that is where I've seen the hottest temps. How hot is too hot? I know at idle 40 degrees celcius is not that bad but seeing around 50 makes me nervous. Am I risking a problem here? I have the fans set to be quiet because this is also a PC that I watch BLU RAY movies on so I can't have a wind tunnel. The Monsoon Vigor 3 I'm usung to cool the CPU is a real dilemma because while it cools the CPU real well its fans blow the substantial I7 heat all over the case instead of in any one direction where it is best exhausted. In fact one fan blows air back toward one of my intake fans. Man that just doesn't make a while lot of sense.