CREATE TABLE table_55084 ("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 series ^ when the CPU clock is 1500 and the model is t-52r
SELECT "Series ^" FROM table_55084 WHERE "CPU clock ( MHz )" = '1500' AND "Model" = 't-52r'
SELECT "Series ^" FROM "table_55084" WHERE "CPU clock ( MHz )" = '1500' AND "Model" = 't-52r'