> Do any of you guys know the lower voltage limit of a 1600mhz Turion
AMD always suggest a range but it's only a guideline. It appears you may
have found the lowest stable Vcore voltage already.
> I tried to undervolt it with CpuMark Clock utility and got it at 0.9V
> stable. This reduced the temperature of my laptop by about
> 10C(checked with speedfan).
> If I go any lower then the computer just restarts.
> Is there any potential damage that I can do to the laptop by
You won't damage hardware though you might cause data corruption. Check the
MD5 or SHA1 sums of several 700MB - 1GB files. If you get the same figure
time after time it's a good sign. If you don't, increase Vcore.
See if it passes a minimum of 24 hours of Orthos loading both cores. It it
does it's likely stable.