CREATE TABLE table_204_582 (id NUMBER, "model" CLOB, "launch" CLOB, "code name" CLOB, "fab  ( nm ) " NUMBER, "bus interface" CLOB, "memory  ( mib ) " CLOB, "core clock  ( mhz ) " NUMBER, "memory clock  ( mhz ) " NUMBER, "config core1" CLOB, "fillrate\ moperations/s" NUMBER, "fillrate\ mpixels/s" NUMBER, "fillrate\ mtextels/s" NUMBER, "fillrate\ mvertices/s" NUMBER, "memory\ bandwidth  ( gb/s ) " NUMBER, "memory\ bus type" CLOB, "memory\ bus width  ( bit ) " NUMBER, "directx support" NUMBER)

tell me the number with a fab of 500 nm .
SELECT COUNT(*) FROM table_204_582 WHERE "fab (nm)" = 500
SELECT COUNT(*) FROM "table_204_582" WHERE "fab (nm)" = 500