Whats peoples opinions on pencil mods?

[benjo]

Hey all

I have an X800XT-PE, and at the moment i cant go much over stock, currently at 540/560.

I'm just wondering if a pencil voltmod would get me past this barrier?

Also, is there any way of upping the AGP voltage in bios?

AND what are the kind of risks involved in changed the voltages?

Thanks