EVGA GeForce GTX780 3GB GDDR5 384bit, Dual-Link DVI-I, DVI-D, HDMI,DP, SLI Ready Graphics Card (03G-P4-2781-KR) Base Clock: 863 MHz Boost Clock: 902 MHz Memory Clock: 6008 MHz Effective CUDA Cores: 2304 3072MB GDDR5 384bit Memory NVIDIA TXAA, NVIDIA GPU Boost 2.0, NVIDIA PhysX, NVIDIA FXAA, NVIDIA Adaptive Verticle Sync, NVIDIA Surround, NVIDIA 3D Vision Ready, NVIDIA 3-Way SLI Ready, NVIDIA CUDA Technologies PCI express 3.0 Microsoft DirectX 11.1 API with Direct compute 5.0 Support, OpenGL 4.3 Support, OpenCL support Chipset: NVIDIA GeForce GTX 780 Core Clock: 863MHz Memory: 3GB GDDR5 Memory Interface: 384-bit Ports: 1 x HDMI, 1 x DisplayPort, 1 x DVI-I, 1 x DVI-D