The OWC 2GB PC2-6400F RAM with HEAT SINKS is designed specifically for Mac Pro systems. This DDR2 FB-DIMM SDRAM module has a total capacity of 2GB, with each module providing 2GB of memory. The PC2-6400 bus speed ensures fast and efficient performance, making it a reliable choice for upgrading your computer's memory capacity. Additionally, the included heat sinks help to keep the module cool and stable during operation, maintaining optimal performance for your system.