CREATE TABLE table_name_57 (memory__gb_ VARCHAR2, number_of_cpus VARCHAR2)

Which Memory (GB) has a Number of CPUs of 1 6?
SELECT memory__gb_ FROM table_name_57 WHERE number_of_cpus = "1–6"
SELECT "memory__gb_" FROM "table_name_57" WHERE "1–6" = "number_of_cpus"