EVGA GeForce GTX 770 SC 2GB GDDR5 256 -Bit Dual BIOS Dual-Link DVI-I/DVI-D HDMI DP SLI Ready Graphics Cards with ACX Cooler 02G-P4-2776-KR Microsoft DirectX 12 API (feature level 11_0) Support Base Clock: 1111 MHz Boost Clock: 1163 MHz Memory Clock: 7010 MHz Effective CUDA Cores: 1536 2048 MB, 256 bit GDDR5 NVIDIA TXAA, NVIDIA GPU Boost 2.0, NVIDIA PhysX, NVIDIA FXAA, NVIDIA Adaptive Vertical Sync, NVIDIA Surround, NVIDIA 3D Vision Ready, NVIDIA 3-Way SLI Ready, NVIDIA CUDA Technologies PCI Express 3.0