Kingston HyperX 4GB (2 x 2GB) DDR2 SDRAM 1066 240 Kingston HyperX 8GB (2 x 4GB) DDR3 SDRAM 1333 240 Kingston HyperX 2GB DDR3 SDRAM 1600 PC3 12800 240 iBUYPOWER 16GB Kit (2 x 8GB) DDR3 SDRAM Memory Mo CyberPower CPRM8000 8GB Kit (2 x 4GB) DDR3 SDRAM