user: Question: How many different FSB are there for the 7140N model?
Columns: ['Model', 'Speed (GHz)', 'L2 Cache (MB)', 'L3 Cache (MB)', 'FSB (MHz)', 'TDP (W)']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['7110N', '2.50', 2.0, 4.0, 667.0, 95.0]
SQL:

assistant: SELECT COUNT("FSB (MHz)") FROM "Table" WHERE "Model" = '7140N';