I've searched all over the board and haven't found anything that seems to talk about this at all. I just installed an opteron 165 to in my system with a Thermaltake Bigwater system and a Neo2 Platinum motherboard. I'm aware that programs that tell you the temp aren't the most accurate but the one I used was always within a degree or two of my motherboard bios so take it as being fairly accurate. Everyone seems to be in the 30 C range with these at idle and I'm currently sitting and roughly 44 C at idle. I've tried remounting the water block and reapplying arctic silver 5. Is it just the Bigwater system can't cool a dual core or is my sensor messed up with it being a dual core or is it something else? Any advice will be appreciated. Thanks in advance.