CREATE TABLE table_26583 ("Processor" TEXT, "Brand Name" TEXT, "Model  ( list ) " TEXT, "Cores" FLOAT, "L2 Cache" TEXT, "Socket" TEXT, "TDP" TEXT)

what is the socket that has a brand name of core 2 extreme?
SELECT "Socket" FROM table_26583 WHERE "Brand Name" = 'Core 2 Extreme'
SELECT "Socket" FROM "table_26583" WHERE "Brand Name" = 'Core 2 Extreme'