I have a Gigabyte EP45-UD3P R1.0 mobo and E8400 CPU.  The default multiplier is 9 to give a 3ghz cpu, but the multiplier stays at 6 and doesn't go up to 9 even when running applications for 100% cpu usage.  It used to fluctuate between 2 to 3ghz like it's supposed to (due to DES?).  In the BIOS I can set the multiplier to 9 and save and exit, but when I restart the next time the multiplier goes back to 6.   I recently installed and uninstalled EasyTune 6, so that might be the problem.  When I tried to overclock with EasyTune, the multiplier still stays at 6.  I've also disabed Dynamic Energy Saver in the Bios.