The Corsair 12GB DDR3 SDRAM Memory kit consists of 3 DIMM modules, each with a capacity of 4GB, totaling 12GB. The memory operates at a speed of 600 MHz and is designed for use in desktop computers. This kit is ideal for users looking to upgrade their system's memory capacity for improved multitasking performance. The Corsair brand is known for producing high-quality computer components, ensuring reliability and compatibility with a variety of systems.