VisionTek Radeon 7970 3 GB DDR5 PCI-Express Graphics Cards (900491) AMD Eyefinity multi-display technology. Support up to 4 Displays Get amazing EyeDefinition graphics with DirectX 11 technology Shader Model 5.0 and AMD App Acceleration2 AMD CrossFire multi-GPU technology5 - Dual, triple or quad-GPU scaling DisplayPort 1.2 Max resolution: 4096x2160 per display Multi-Stream Transport 3GHz HDMI 1.4a with Stereoscopic 3D Frame Packing Format, Deep Color, xvYCC wide gamut support, and high bit-rate audio Output protected high bit rate 7.1 channel surround sound over HDMI with no additional cables required Limited Lifetime Warranty