Smartpower

I've read a couple different threads and have yet to find an answer. Which program properly reads the Core 2 Duo temperatures? Im running an E4400 running SLA3F L2 Stepping @ 2.4 GHZ, w/ a Tuniq Tower on a Gigabyte P35 DS3L MB. Idle Reading 100% TAT Load Reading This was my first overclock...

Would you buy one of these, or are the risks too high?