CREATE TABLE table_66143 ("Model number" TEXT, "sSpec number" TEXT, "Cores" TEXT, "Frequency" TEXT, "Turbo" TEXT, "L2 cache" TEXT, "L3 cache" TEXT, "GPU model" TEXT, "GPU frequency" TEXT, "Socket" TEXT, "I/O bus" TEXT, "Release date" TEXT, "Part number ( s ) " TEXT, "Release price  (  USD  ) " TEXT)

What is the L2 cache for the processor with iris pro graphics 5200 and frequency of 2.6 ghz?
SELECT "L2 cache" FROM table_66143 WHERE "GPU model" = 'iris pro graphics 5200' AND "Frequency" = '2.6 ghz'
SELECT "L2 cache" FROM "table_66143" WHERE "Frequency" = '2.6 ghz' AND "GPU model" = 'iris pro graphics 5200'