Specifications Mfr Part Number: VCQK620-PB Chipset: NVIDIA Quadro K620 Video Memory: 2GB GDDR3 Memory Interface: 128-bit Memory Bandwidth: 29.0 GB/s Bus: PCI-Express 2.0 x16 CUDA Cores: 384 RAMDAC: 400 MHz Max. Resolution: 3840 x 2160, Support 4x Display Monitors (w/ 1.2 from DisplayPort Multi-Stream) Connectors: DVI-D Dual Link, DisplayPort Thermal: Fansink Dimensions (LxH): 6.300 x 2.713 inch This Video Card Supports: Microsoft Windows 8.1/ 8/ 7/ Vista/ Linux/ Solaris NVIDIA CUDA Architecture Unified Driver Architecture (UDA) NVIDIA Scalable Geometry Engine NVIDIA GPU Boost Technology NVIDIA TXAA Technology NVIDIA FXAA Technology NVIDIA 3D Vision and 3D Vision Pro Technology NVIDIA NVIEW Multi-display Technology NVIDIA Quadro Mosaic Technology NVIDIA Multi-GPU Technology HDCP - High-bandwidth Digital Content Protection Microsoft DirectX 11, Shader Model 5.0 and OpenGL 4.4 41W Maximum Power Consumption Low Profile Design