just an fyi.
an tbird is roughly equal to a duron +100mhz.
ie tbird 800 just as fast as a duron 900.
the cache of the duron really makes overclocking > 950mhz futile. The percentage gains from the 950-1000mhz on a duron fall off sharply.
so a tbird 900 is actually faster than a duron 1000.
When you clock the tbird up, they usually hit +100mghz, sometimes more.
so think about that when your purchasing your chip.
many 600's reach 950, not many 900's reach 1100

they sort the tbirds alot better at the fab.