user: Question: how many l2 cache has a clock speed to tdp ratio of 46.7?
Columns: ['Core', 'Processor', 'Model', 'Clock Speed', 'L2 Cache', 'Voltage', 'TDP', 'Clock Speed to TDP ratio (MHz/W)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Windsor', 'Athlon 64 X2', '3600+', '2000MHz', '512 KB', '1.25 V', '89 W', '22.5']
SQL:

assistant: SELECT COUNT("L2 Cache") FROM "Table" WHERE "Clock Speed to TDP ratio (MHz/W)" = '46.7';