Okay, if i were you, and the fan is installed
correctly, then use the Bios. Reason being conroe based CPU's still run much cooler than the old prescott,northwood,or willy
based pentium 4's I've built and repaired many computers and yes core temp and the new
speed fan are fine programs, but for most
computers nowadays they show much higher
temps than the old school way of showing
temps causing much stress and worry.
Make sure the fan is installed correctly,
Use the Bios or the old temp sensors
based on the motherboard. I am using a conroe
based computer right now and the motherboard
sensor says 85F and the case is very cool
much cooler than my 2.8GHz presHOT P-4.
So don't stress about the core.