Name the Model Number which has a FSB Speed of 400 mhz?
CREATE TABLE "ultra_low_voltage_90_nm" (
  "model_number" text,
  "clock_speed" text,
  "l2_cache" text,
  "fsb_speed" text,
  "voltage_range" text,
  "socket" text
);
SELECT "model_number" FROM "ultra_low_voltage_90_nm" WHERE "fsb_speed"='400 mhz';