P4 2.8 Ghz HT 800FSB

Is this processor backwards compatible with Mobos in the 533FSB class. I bought a Asus P4PE awhile back hoping to eventually upgrade to a 3.0Ghz 533 HT. But now that the cheaper P4s are out could I use one of them In HT mode in the P4PE. I already expect the answer is no but never hurts to ask.

I doubt the board will run reliably at 200MHz FSB.

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