45+ doesn't seem entirely unreasonable... I believe that's what mine usually sits at. If it hit 55C I'd be a little more concerned.
Yeah Me too
55C is 131 *F most board limits are around 145*F ( 63 C ) That's hot.
mine is a X2 6000+ and runs idle at 29 C to 30 C
But then I use a chiller, not water cooled.
Water cooled can get you maybe just under ambient temps.
Usually my ambient air temps are around 80*F and cpu is 29C is 84*F ( again idle )
Under full load of cpu it can get to around 34C to 35C ...around 93*F
Thats not bad,,,,and it's not even OC'd .