CREATE TABLE table_3893 ("Model - Computer name" TEXT, "CPU type" TEXT, "No. of processors" TEXT, "Period of operation" TEXT, "Maximum peak performance  (  Teraflops  ) " TEXT, "Use" TEXT)

Name the cpu type for june 2005 - april 2009
SELECT "CPU type" FROM table_3893 WHERE "Period of operation" = 'June 2005 - April 2009'
SELECT "CPU type" FROM "table_3893" WHERE "Period of operation" = 'June 2005 - April 2009'