VisionTek Radeon 7870 2GB DDR5 PCI Express - Ghz Edition Graphics Card (900506) GHz Edition (1000 Mhz Core Clock) PCI Express 3.0 x16 bus interface DirectCompute 11 DirectX 11-capable graphics Shader Model 5.0 and OpenGL 4.2 support AMD CrossFire multi-GPU technology DisplayPort 1.2 Max resolution: 4096x2160 per display Multi-Stream Transport Limited Lifetime Warranty