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_79 ( fsb_ht_frequency__mhz_ VARCHAR, sata VARCHAR, memory VARCHAR )

### Question ###
Which FSB/HT frequency (MHz) has a SATA larger than 6 and DDR 266/333/400 Registered/ECC memory?

### Accurate SQL ###

SELECT fsb_ht_frequency__mhz_ FROM table_name_79 WHERE sata > 6 AND memory = "ddr 266/333/400 registered/ecc"