EVGA GeForce GTX 980 4GB GAMING,Silent Cooling Graphics Card 04G-P4-2980-KR Base Clock: 1126 MHZ Boost Clock: 1216 MHz Memory Clock: 7010 MHz Effective CUDA Cores: 2048 Bus Type: PCI-E 3.0 Memory Detail: 4096MB GDDR5 Memory Bit Width: 256 Bit- Memory Speed: 0.28ns Memory Bandwidth: 224.3 GB/s- Height: 4.376in - 111.15mm Length: 10.5in - 266.7mm Width: Dual Slot NVIDIA Dynamic Super Resolution Technology NVIDIA MFAA Technology NVIDA Game Works Technology NVIDIA Game Stream Technology NVIDIA G-SYNC Ready Microsoft DirectX 12 NVIDIA GPU Boost 2.0 NVIDIA Adaptive Vertical Sync NVIDIA Surround Technology NVIDIA SLI Ready NVIDIA CUDA Technology OpenGL 4.4 Support OpenCL Support HDMI 2.0, Display Port 1.2 and Dual-link DVI PCI Express 3.0 Max Monitors Supported: 4 240Hz Max Refresh Rate Max Analog: 2048x1536 Max Digital: 4096x2160 Recommended PSU: 500W or greater power supply