Hmm, Well I dont really mind what voltage they would require running as long as it isnt anymore than 2.2 volt which is what my current 300a is running on. That said do you think that most Celeron 366's would hit the 550 given 2.2 volts. Or is it other things stopping, such as L2 cache quality? I have not had any problem with my 300a at 450 using 2.2 volts since I clocked it at this about 6 months ago, and it runs solid without missing a beat. If a chip wont overclock with 2.2 volt usually then I'll throw it in. Just a shame there isnt any places in perth, Western Australia, that sell pretested overclocked 550's
