I did this mod by putting a wire into the right socket holes and it worked, my xp2100+ boots now as a 2700+.
But I wasn't able to reach a much higher fsb. Before i ran 221x11, afterwards i could run 222x11 (223 and 225 also but not stable). The Vdd mod was much more effective than the L12 mod.
Still I'm happy with 222x11, I don't see many aircooled systems doing the same.
