user: Question: Name the Voltage Range which has a FSB Speed of 400 MHz, and a Clock Speed of 1 GHz?
Columns: ['Model Number', 'Clock Speed', 'L2 Cache', 'FSB Speed', 'Voltage Range', 'Socket']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['C7-M ULV', '1 GHz', '128 KB', '400 MHz', 'N/A', 'Socket 479']
SQL:

assistant: SELECT "Voltage Range" FROM "Table" WHERE "FSB Speed" = '400 MHz' AND "Clock Speed" = '1 GHz';