user: Question: Clock rate (MHz) smaller than 400, and a Bandwidth (MB/s) of 1420 has what channels?
Columns: ['Designation', 'Bus width (bits)', 'Channels', 'Clock rate (MHz)', 'Bandwidth (MB/s)']
Types: ['text', 'real', 'text', 'real', 'real']
Sample row: ['PC600', 16.0, 'Single', 266.0, 1066.0]
SQL:

assistant: SELECT "Channels" FROM "Table" WHERE "Clock rate (MHz)" < 400.0 AND "Bandwidth (MB/s)" = 1420.0;