Can I use a P4 Hyperthreading in a 850i chipset?

I know this motherboard does not support any P4 chip offically but has anyone tried using a P4 with HT in this board? I want to upgrade my old Dell 8200 with RDRAM with a P4 2.26GHz 533MHz bus speed.

Well, not really. All the HT CPUs but the 3.06 are 800 bus. If you put a 800 bus CPU in there, it would not even run at default speed. Don't waste your money.