Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_3 (tdp___w__ VARCHAR, codename VARCHAR)
### Question:
What is the TDP (w) of the chipset with a codename sb850?
### Answer:
SELECT COUNT(tdp___w__) FROM table_name_3 WHERE codename = "sb850"