Is it possible to undervolt a Turion?

rmclock and prime 95. There is a guide in the acer section and on the laptop logic website, sry i don't have any links at the moment

Yes, just take a look at these excellent Battery Optimization Guides by Laptop Logic;

Basic:
http://www.laptoplogic.com/resources/guides/14/1/1/

Advanced:
http://www.laptoplogic.com/resources/guides/38/1/1/

Or this undervolting guide by OSPrime:
http://www.notebookforums.com/showthread.php?t=80394

Yes. I am using RMClock to undervolt the Turion cpu in my Acer Ferrari 4005. It's stable and working fine.

The default Minimal voltage of the Turion M37 that i have is 1.00V at 800 Mhz. I was only able to lower it to .950V at 800 Mhz so the temp diffrence is negliable. Power saving wise is also very little diffrence, maybe an additional 5 to 10 minutes.

The default Maximal voltage is 1.50V at 2Ghz. I was able to lower this down to 1.35V at 2Ghz. When playing games or processing some intensive task the Ferrari runs slightly cooler at the lowar voltage. The fan doesn't switch on to the fastest speed even when playing HL2. I'm very pleased with the results of undervolting the maximum voltage.

UNDERVoLT TURION & RMCLOCK

#facts:
I have an ACER TRAVELMATE 4402WLMI (Turion ML30)
It gets too hot leftside of the touchpad
I've found this UNDERVOLT concept and it looks like perfect
I've downloaded RightMark CPU Clock utility

After start just here, reading this thread I tried to research the web to find safety conditions to make it.

#conditions:
system running WindowsXP SP2
RMCLOCK version 2.0

I've been using 0.95v @ 4x200Mhz (800Mhz) and 1.1v @ 8x200Mhz (1600Mhz)
(HARD to find that we should mark "Use P-State..." under specif profiles tab, and then RIGHTCLICK to fill one profile... That's ok, surpassed it)

Processor temps turned from 72.Celsius into 59.Celsius (13 centigrades!!!)

BUT.................

1. Gaming on the notebook, though the undervolt, put processor temps higher to 82.Celsius!! At this point, before the undervolt, the system itself was able to throttle it down to 800Mhz... But not now! I've saw it after finish the game and see Processor Temperature at 84.Celsius with both "AMD Powernow Dashboard" and "PC Wizard 2006" (could happen only under extreme CPU utilization, but how could I know when is it going to happen again? And without this control it would be dangerous and could OverHeat the CPU)
Tested it again with Prime95 & ATITOOL and it happens again.
Then, RMCLOCK disables the Thermal control that was made before??? How could I solve this???

2. Even after made my personal configuration, when the Windows restarts they are all set back again to default values!!! How to solve this??? BOTH "Restore CPU defaults..." are NOT marked! How could I solve this?

*Sorry the mistakes since my native language is Portuguese!