Crucial Technology has been known for their quality memory, great prices, and fast shipping. Recently Crucial has a new high performance memory product line, which goes by the name of Ballistix. The Ballistix line of memory encompasses both DDR and DDR2 products, and emphasizes performance while still maintaining Crucial's high standards of quality. The Ballistix DDR500 PC-4000 1GB Kit is specifically built for performance enthusiasts who want to push the performance without worrying about data loss or corruption.