Hmm, I have been considering one of these 366 PPGA Celerons, but just want to know what sort of success rates people are having hitting 550 mhz and beyond. At the moment I am running a Celeron 300a at 450 and everything seems great, but would the extra speed I would gain from one of these CPU's at 550 mhz be worth it over the current 450 mhz setup, especially if the chip dont overclock and I have no other option but to go for 83x5.5 = 456mhz. My Celeron 300 using a 100mhz fsb would be better than the 366 running 456 using only 83mhz fsb. Any ideas or anything i should be looking out for peoples, any other dates etc, Thanks.