CREATE TABLE table_55086 ("Series ^" TEXT, "Model" TEXT, "CPU clock  (  MHz  ) " TEXT, "CPU cores" FLOAT, "TDP  (  W  ) " TEXT, "L2 cache  ( KiB ) " TEXT, "Radeon cores" FLOAT, "DDR3 speed" FLOAT)

Name the CPU clock for L2 cache of 2*512 and series ^ of e-series and DDR3 speed of 1066
SELECT "CPU clock ( MHz )" FROM table_55086 WHERE "L2 cache (KiB)" = '2*512' AND "Series ^" = 'e-series' AND "DDR3 speed" = '1066'
SELECT "CPU clock ( MHz )" FROM "table_55086" WHERE "DDR3 speed" = '1066' AND "L2 cache (KiB)" = '2*512' AND "Series ^" = 'e-series'