The G.SKILL DDR3 4GB SO-DIMM laptop memory RAM consists of two 4GB modules, providing a total capacity of 8GB. These modules are designed for DDR3 SDRAM technology, with a bus speed of PC3-10666 (DDR3-1333). The compact SO-DIMM form factor makes it easy to upgrade the memory in laptops, and the 204 pins ensure compatibility with a wide range of devices. Ideal for enhancing the performance and multitasking capabilities of your laptop, this RAM upgrade is a reliable choice from a trusted brand.