Actually, it is much safer than overclocking or overvolting. Basically, you are feeding the CPU as little power as possible to remain stable. If it fails, then it resets but you can't damage it, unlike overclocking.
'undervolting' the gpu, is basically getting it to run faster than the voltage provided would be guaranteed stable for.
Are you sure you don't mean unbolt? :D
I have played with overclocking in the past, but not undervolting or on a laptop, I'm a bit scared.
Actually, it is much safer than overclocking or overvolting. Basically, you are feeding the CPU as little power as possible to remain stable. If it fails, then it resets but you can't damage it, unlike overclocking.
'undervolting' the gpu, is basically getting it to run faster than the voltage provided would be guaranteed stable for.