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

### Instruction:
What is the TDP (w) of the chipset with a codename sb850?

### Inputs:
table_name: table, columns: ['Model', 'Codename', 'Released', 'Fab ( nm )', 'SATA', 'USB 2.0+1.1', 'USB 3.0', 'Parallel ATA 1', 'RAID', 'Gb Ethernet MAC', 'Package', 'TDP ( W )']

### Response:
SELECT COUNT TDP ( W ) FROM table WHERE Codename = sb850