Celeron d 2.9ghz to pentium d 3.0ghz?

i need to upgrade and my celeron's fsb is 533.2mhz and I don't know if the pentium D wil work with my motherboard(the pentuim requires 800mhz). Is 533.2 the limit for my motherboard? I have downloaded cpuz and thats all it told me so ya! thanks
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