CREATE TABLE table_34691 ("Date" FLOAT, "Name" TEXT, "Developer" TEXT, "Clock" TEXT, "Process" TEXT, "Cores per die / Dies per module" TEXT)

What is the latest date with Cores per die / Dies per module of 2 / 1, and a Clock of 1.4-1.6ghz?
SELECT MAX("Date") FROM table_34691 WHERE "Cores per die / Dies per module" = '2 / 1' AND "Clock" = '1.4-1.6ghz'
SELECT MAX("Date") FROM "table_34691" WHERE "Clock" = '1.4-1.6ghz' AND "Cores per die / Dies per module" = '2 / 1'