Tejas will most likely be a 1200mhz bus part, but as with basically all of intels future lines, the new fsbs would only be available on the last 2 speed bumps of the processor as to correspond with ddr2 speed advancements, then maybe theyre rehash all of the previous processors with the new bus like they did with the C series. And unless intel fixes thier memory effeciency problems you wont get anywhere near the full bandwidth of the memory, as right now it takes a bus speed of between 1066-1200mhz to even get the maximum throughpt of ddr400