Re: vista/overclocking Question
It's because you have C1E and ESIT options Enabled in your BIOS. These options decrease the voltage and/or multiplier of the processor whenever it is idle or hardly being used to conserve power and lower temperatures. Whenever you run a demanding application or game, it kicks back up to the BIOS set FSB and multiplier.
If you want it to always run at your designated FSB and multiplier, go into your BIOS and enter the Advanced BIOS Options menu. Look for C1E and ESIT, disable them, F10 to Save & Exit and you're good to go.
Case: LIAN LI PC-A70B
Mobo: Gigabyte P35-DS3R
CPU: Intel Q6600 g0 @ 3.0GHz
HSF: Thermalright Ultra-120 Extreme
RAM: 4GB G.SKILL @ 4-4-4-12
VCard: EVGA 8800GTS G92 @ 700/1000
HDDs: 2x 750GB & 250GB
Optical: Sony NEC SATA DVD Burner
PSU: Silverstone 750W Modular