The Lenovo IdeaPad Z580 RAM cards are 8 GB DDR3 SDRAM modules specifically designed for laptops. With a total capacity of 8 GB and a bus speed of PC3-10600 (DDR3-1333), these RAM cards provide fast and efficient performance for your computer. The SO-DIMM form factor makes them easy to install and upgrade, ensuring a seamless computing experience. Upgrade your laptop's memory capacity with these reliable and high-quality RAM cards from Samsung.