Just got few of this Celeron 420 yesterday..
Altough they have same batch, they have different wall, 405MHz, 410MHz, also got one that could not run higher than 385MHz :mad:
This one could run till 430MHz, test it with Pi 32MB with tweaking and with Intel stock cooling (not like the one Kiwi's post :D )
CPU Validation
http://valid.x86-secret.com/show_oc.php?id=220808
screenshot
http://img528.imageshack.us/img528/3...969swmelr7.png