I've heard it's possible to overclock a Dell from within Windows. I've googled it but found no software, anyone?
No probs.... Remember that overclocking could cause hard drive corruption if not fully stable... - What are you intending to use for stability testing by the way? Prime95? ORTHOS? SuperPi 32M? (I use Prime95, but then I've only got a single-core CPU) Have fun!
Prime95 can be used on dualies, but Orthos is for the win. CPU-Z + Orthos + Memtest86+ = tools of the trade