Ok, I finally decided to upgrade from my ancient pentium D 805 and get a Q8400 Quad core. I have been reading how hot they get and how hard it is to cool them and overclock them with good temps w/o water. After getting a new case (NZXT Lexa S) and the new cpu properly mounted on my motherboard (Gigabyte EP45-UD3P) I fired her up and was reading around 22-23c Idle . Even when putting a load or prime 95ing it only got about 42c MAX. Currently as a heatsink, I am using a zalman cnp9500 with AS5 and it works pretty well but it never ran my D 805 this low. I am using about 1.3 volts on the cpu and dont even have the fan at full power. I even have it O/Ced at 3.7Ghz and am currently at 21c. Is it possible I got lucky and got a really good chip that runs really cool or could it be a bad sensor in the chip or w/e. I just really hope its not burning up at about 70 when it says 21c. My motherboard has never had a problem with temps and says the temps both under bios and program.