EVGA GeForce GTX770 Classified with EVGA ACX Cooler 4GB GDDR5 256-Bit Dual-Link DVI-I DVI-D HDMI DP SLI Ready Graphics Card (04G-P4-3778-KR) Microsoft DirectX 12 API (feature level 11_0) Support Base Clock: 1150 MHz Boost Clock: 1202 MHz Memory Clock: 7010 MHz Effective CUDA Cores: 1536 4096MB GDDR5 256bit Memory Microsoft DirectX 11.1 API with Direct compute 5.0 Support, OpenGL 4.3 Support, Opens support NVIDIA TXAA, NVIDIA GPU Boost 2.0, NVIDIA PhysX, NVIDIA FXAA, NVIDIA Adaptive Vertical Sync, NVIDIA Surround, NVIDIA 3D Vision Ready, NVIDIA 4-Way SLI Ready, NVIDIA CUDA Technologies PCI express 3.0