I don't have motherboard yet. I'm still looking for.

I have offer to buy DFI nForce2 400-AL NF2, but it is single channel and i saw only about 210 fsb max.

I find highest fsb with:

Abit NF7-S 2.0 rev. with mod. bios ( >250 fsb),
Msi K7N2 Delta2 Platinum with v11.3 bios (250fsb)

that's good, but vdimm mod for me needed