CenterNEX&reg; 8GB Memory KIT (2 x 4GB) For MSI Notebook CR41 0M CR460 CR61 CR70 CX61 0NC 0ND CX70 FR720 FX420 FX620DX. SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memo CenterNEX 8GB Memory KIT (2 x 4GB) For MSI Notebook CR41 0M CR460 CR61 CR70 CX61 0NC 0ND CX70 FR720 FX420 FX620DX. SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memo