Patriot PVS34G1600LLK Extreme Performance Viper Series PC3-12800 DDR3 1600MHz 4GB CAS 7-7-7-20 Low Latency Dual Channel Kit (Silver),Patriot Memory (Direct),PVS34G1600LLK" /> Extreme Performance PC3-12800 (DDR3 1600MHz) Low Latency (7-7-7-20) @ 1.9V Equipped Patriot Viper Heat Shields with integrated ACC (Aluminum Copper Composite) technology 100% Hand Tested and Verified RoHS Compliant Intel XMP Ready