:| Memory Size: 4 GB| Memory Technology: DDR3 SDRAM| Number of Modules: 1 x 4 GB| Memory Speed: 1333 MHz| Memory Standard: DDR3-1333/PC3-10600| Error Checking: Non-ECC| Signal Processing: Unbuffered| Number of Pins: 240-pin| Form Factor: DIMM| Thickness: 157.5 mil. .