E8400 @ 3.6GHz using CNPS9700LED
high 20s - low 30s idle
46-47c after 12+ hours of Prime95
~20C ambient temperature with case open (don't remember ever having a PC with closed case! lol)
I barely had to up the voltage on it, so probably why it's running so damn cool
9700 is an awesome cooler, but it's far from cheap. TRUE extreme with Scythe is a solution that offers same for less (wish I knew that before I bought 9700!!) From what I heard, Zalman 7000b is barely better than Intel stock coolers, so I'd definitely switch.