EVGA 03G-P3-1597-AR GeForce GTX580 CLASSIFIED ULTRA HydroCopper, 3072MB GDDR5, 4-Way SLI, Dual-DualLink DVI, PCI-E2.0 SLI Graphics Card Classified Ultra Core Clock of 900MHz 3072MB GDDR5 Memory Clock = 4212 MHz, Shader Clock = 1800 MHz, CUDA Cores = 512 NVidia Cuda, PhysX, PureVideo HD, 3D Vision Surround Technologies 2-Way, 3-Way and 4-Way SLI ready Two DualLink DVI-I HDCP capable connectors EVBot Connector Includes EVGA Precision Tuning Utility EVGA HydroCopper Waterblock cooling