As regular readers will know, my main HTPC is currently based on an AMD Brazos E350. I’d like to say a quick thanks to SemiAccurate for their recent article highlighting the excellent BrazosTweaker by Sven Wittek. This tool (and its sibling FusionTweaker) enable the tweaking of P‑States (the voltage in low power mode) of Brazos and Llano chips, just like K10Stat, PhenomMsrTweaker, RMClock, CrystalCPUID and others have done in the past. To quote SemiAccurate, “the main purpose of both these tools is to modify the voltages and clock dividers of the built-in P‑States on these chips.”
The FusionTweaker utility is still somewhat buggy by all reports, but BrazosTweaker seems reliable to me. I highly recommend reading the SemiAccurate article and then grabbing the tool if you have a Brazos HTPC, or laptop.