EVGA GeForce GTX 780 Dual ACX Cooler 3GB GDDR5 384-Bit Double BIOS Dual-Link DVI-I/DVI-D HDMI DP SLI Ready Graphics Cards 03G-P4-3783-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