I currently have AMD II and I have done a lot of overclocking with AMD machines. I am planning to custom built Celery or PIII system. Can you change the multiplier setting and system bus on both of them? I've heard that you can only change system bus on celery. Also, can you buy un-locked PIII processor? how do you unlock it? How high can you oc PIII450? Also, which celery can break 600MHZ mark ?

Thanks in advance.