my toshiba brand new came with 2 x 2gb pc3-8500s at 1066mhz not 1333mhz and toshiba direct even told me to buy 1066mhz for it to upgrade it not 1333mhz like pyree said. toshiba direct doesn't even sell 1333 mhz modules for this laptop, they are all 1066mhz like the 2x2gb modules that are in it now so this is getting confusing here when toshiba doesn't even sell 1333mhz modules for it..