I am currently running a spire whisperrock IV on my athlon XP 3000 barton. My case temp is 33-34, and my processor temp is 58 idle, and anywhere between 58-65 under load at which point my system restarts. I've checked my bios, and there's no shutdown temp listed, and nowhere to alter the shutdown temp. The restarts may be due to win XP service pack 2, because when the system comes back on it tells me that the cause of my restart is a device driver, but it can't determine which device driver (they're all up to date, by the way). Anyway, I'm considering the spire falconrock because of it's price, but it is very similar to the whisperrock, and I need a major increase in cooling performance on my CPU. Any suggestions? (preferably similar to the falconrock's price and dBa level).