The Samsung 8 GB (2x4GB) PC3L-12800S M471B5173QH0-YKO Laptop Ram is a set of two DDR3 SDRAM modules with a total capacity of 8GB. Each module has a capacity of 4GB, and they are designed for laptops with a SO-DIMM form factor. With a bus speed of PC3L-12800S (DDR3-1600) and 204 pins, this RAM is suitable for enhancing the performance and speed of your laptop for improved multitasking and overall efficiency.