Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What's the bus width (in bit) of the model whose core is 650 MHz?

### Inputs:
table_name: table, columns: ['Model', 'Year', 'Code name', 'Fab ( nm )', 'Bus interface', 'Transistor count (Millions)', 'Memory max ( MiB )', 'Core ( MHz )', 'Memory ( MHz )', 'Type', 'Bus Width ( Bit )', 'DirectX', 'Shader Model', 'OpenGL', 'Maximum Resolution', 'IceQ4 Cooling System', 'Notes']

### Response:
SELECT COUNT Bus Width ( Bit ) FROM table WHERE Core ( MHz ) = 650