said by Nanoprobe:
Attempting to overclock anything on any OEM laptop is a very bad idea IMHO and probably not possible anyway. OEMs like Dell, HP, whoever usually lock down their BIOS which makes overclocking virtually impossible.
Dell had a XPS laptop with a unlocked bios with Intel Core2 Extreme (unlocked multi)
it allowed users to overclock the CPU from 2.6(X7800)/2.8(x7900) to 3.4GHz