This NVIDIA DDR2 SDRAM module with a total capacity of 1GB and a capacity of 1GB per module is perfect for boosting your computer's performance. Designed with PC2-8500 (DDR2-1066) bus speed, this module is compatible with most computers and is SLI ready. Whether you need to upgrade your existing RAM or replace a faulty module, this NVIDIA RAM is a great choice for improving your computer's speed and performance.