xguntherc

it's the 1.66 GHz right.. also remember thats a Dual Core. so it will work better than a single thats 3.0 GHz.

maybe add more or better ram, but 2GB is the sweet spot for Vista. you don't actually "Need More" unless you do lots of work on the machine, what are you using this Lappy for.

I'm seing more than one list of specs for that. one thats a 1.66 with 2GB and integrated intel graphics. and one thats 1.83 GHz with 4GB and an 8600GTS. what model does yours have??

As Fumz said, I'd also advise not to overclock that thing. Just for the heat issue. if you have the integrated Graphics, then heat is less of a worry, but still a worry. in the end it's up to you. although HP or OEM's like that brand Lock just about everything in the BIOS, and you probably can't adjust the CPU speeds.