Patriot PVS24G6400LLK Extreme Performance Viper Series PC2-6400 DDR2 800MHz 4GB CAS 4-4-4-12 EPP Ready Low Latency Dual Channel Kit (Black) Extreme Performance PC2-6400 (DDR2 800MHz) Low Latency, (4-4-4-15) 2.1V Equipped Patriot Viper Heat Shields with integrated ACC (Aluminum Copper Composite) technology 100% Hand Tested and Verified RoHS Compliant