If you're feeling adventurous..
Your Duron may not be locked, i.e. the multiplier may not be locked at 12x. Before week 39
of manufacture they weren't locked. I go with eddaweaver in that 2GHz should be within reach, without much risk; when she does become unstable she'll let you know - usually hanging at the POST, Windows not loading correctly, or Prime95 throwing a fit.
What this means is that if your FSB won't hit 200, you may be able to compensate to a certain extent with the multiplier, ie:
12.5 x 166 = 2075MHz
13.0 x 155 = 2158MHz
Easiest way to find out without looking at the OPN
sticker on the CPU, is to try and alter the jumper manually. Check your M/B manual for specific multiplier settings.
If you do find it's unlocked, you'll have the best of both worlds: FSB and multiplier flexibility, but as suggested be prepared to increase the core voltage.
Start small and increase from the baseline frequency of 1600MHz, notching up the multiplier or FSB then stopping to test using Prime95 or similar, for a good few hours. The Applebred Durons are as also suggested, excellent little overclockers and you should be able to squeeze 2000MHz out of her. Just bear in mind that not all parts are made equal, and CPU's are no exception so if another guy can hit 2.2GHz doesn't mean that others are guaranteed of hitting his speeds or better.Also note the procedure of "CPU burn in", whereby you load down the CPU with a task or tasks, over and over again. You will often find that after a few weeks of rigerous game playing, folding and heavy multi-tasking, the processor can actually be taken that little bit higher because internally the components have been electrically 'run-in'. Stability is more important than a crazy overclock, however :-)http://www.amdboard.com/amdid.html
. AMD CPU Data: http://www.tomshardware.com/20.../amd...ult/page23.html
. Belarc Advisor: http://www.belarc.com/free_download.html
. GPU Comparison for Laptops: <a href="http://www.notebookche