The Kingston KTW149-ELD 1GB RAM DDR3 1333MHz is a single module of DDR3 SDRAM memory with a total capacity of 3GB, consisting of three 1GB modules. The memory unit has a form factor of DIMM and a bus speed of PC3-10600U. Made by Kingston, a reputable brand in the industry, this RAM is designed for optimal performance and reliability in various computing systems. With its 240 pins and compact design, this memory module is a great addition to improve the speed and efficiency of any computer system.