AMD HD 7950 3GB VRAM4 High-resolution outputswith Mac Boot screen support:1x DVI: up to 2560x1600 @ 60Hz1x HDMI: up to 4K HD or 4K 16:9 @ 60Hz2x Mini DisplayPort: up to 4K HD or 4K 16:9 @ 60HzGPU computing support:OpenCL 1.2 / OpenGL 4.1 Communications <> Networking: >>>.
eBay