CRUCIAL CT2KIT25664BA1339 4GB ( 2GB x 2 ) 240-pin pc3-10600 DDR3 1333mhz Non-ECC 1.5V CL9 Desktop Memory Module 1-Year Mfg Warranty Crucial CT2KIT25664BA1339 CRUCIAL CT2KIT25664BA1339 4GB ( 2GB x 2 ) 240-pin pc3-10600 DDR3 1333mhz Non-ECC 1.5V CL9 Desktop Memory Module