SELECT "L2 Cache" FROM table_48922 WHERE "Clock Speed" = '1.5 ghz'
Name the L2 Cache which has a Clock Speed of 1.5 ghz?
CREATE TABLE table_48922 (
    "Model Number" text,
    "Clock Speed" text,
    "L2 Cache" text,
    "FSB Speed" text,
    "Voltage Range" text,
    "Socket" text
)