PNY CS900 is the ideal solution for a mainstream solid state drive (SSD) upgrade from a hard disk drive (HDD). The CS900 delivers all the most sought after features at an excellent value, and is designed for an easy and cost-effective HDD replacement in the PC system to help realize faster boot times, quicker application launches and better overall system performance.PNY CS900 is the ideal solution for a mainstream solid state drive (SSD) upgrade from a hard disk drive (HDD). The CS900 delivers all the most sought after features at an excellent value, and is designed for an easy and cost-effective HDD replacement in the PC system to help realize faster boot times, quicker application launches and better overall system performance.