user: ### NOW ANSWER:
Question: Which FSB/HT frequency (MHz) has a SATA larger than 6 and DDR 266/333/400 Registered/ECC memory?
Columns: ['Model', 'Processors Supported', 'FSB/HT Frequency (MHz)', 'Memory', 'PCI-Express', 'SATA', 'PATA', 'Sound', 'Network', 'Features']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real', 'text', 'text', 'text']
Sample row: ['nForce3 Professional 150/250', 'AMD Opteron', 'HT 1.0 1.6 GHz', 'DDR 266/333/400 Registered/ECC', 'N/A', 4.0, 4.0, "Enhanced AC'97 2.1", 'GbE: 1 connections', 'MediaShield']
SQL:

assistant: SELECT "FSB/HT Frequency (MHz)" FROM "Table" WHERE "SATA" > 6.0 AND "Memory" = 'DDR 266/333/400 Registered/ECC';