CREATE TABLE table_51065 ("Model number" TEXT, "sSpec number" TEXT, "Frequency" TEXT, "GPU frequency" TEXT, "L2 cache" TEXT, "I/O bus" TEXT, "Memory" TEXT, "Socket" TEXT, "Release date" TEXT, "Part number ( s ) " TEXT)

What is L2 Cache, when Model Number is Atom Z625?
SELECT "L2 cache" FROM table_51065 WHERE "Model number" = 'atom z625'
SELECT "L2 cache" FROM "table_51065" WHERE "Model number" = 'atom z625'