Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_51 ( hypertransport_version VARCHAR, max_aggregate_bandwidth__bi_directional_ VARCHAR )

### Question ###
What Hyper Transport version has 22.4 gb/s of Max. Aggregate bandwidth?

### Accurate SQL ###

SELECT hypertransport_version FROM table_name_51 WHERE max_aggregate_bandwidth__bi_directional_ = "22.4 gb/s"