seems like mine has gotten hotter over the months... I'm using a CoolerMaster HAC-V81 heatsink & my XP1800 temps are around 45 idle & 50 Load.
It used to sit at around 39 idle & 42 load.
I'm thinking about adding a blowhole in the top of my case in addition to the front intake, side intake & rear exhausts. I'm also gonna try me a new heatsink too. Probably will be the Thermaltake TR2-M2.