Table schema:
CREATE TABLE table_15261_1 (voltage_range__v_ VARCHAR, clock_multiplier VARCHAR, part_number VARCHAR)

Question: What is the voltage range (v) if the clock multiplier is 3x or 2x mode and part number is a80486dx4wb-100?
SQL: SELECT COUNT(voltage_range__v_) FROM table_15261_1 WHERE clock_multiplier = "3X or 2X mode" AND part_number = "A80486DX4WB-100"