CREATE TABLE table_name_30 (voltage_range VARCHAR(255), fsb_speed VARCHAR(255), clock_speed VARCHAR(255))
Name the Voltage Range which has a FSB Speed of 400 mhz, and a Clock Speed of 1 ghz?
    
SQL: SELECT voltage_range FROM table_name_30 WHERE fsb_speed = "400 mhz" AND clock_speed = "1 ghz"