VisionTek Products Radeon 7750 SFF 2GB GDDR5 4M Graphics Card 900798 AMD Eyefinity technology multi-display support for up to four displays AMD Stream technology Designed for Direct Compute 11 and OpenCL Accelerated Video Transcoding (AVT). Core Speed: 800MHz. Compliant with DirectX 11 and earlier revisions Advanced dynamic power management with AMD Power Play technology 4 x 4K Cinematic mini DisplayPort Ports v 1.2 (4096 x 2160 per port) Supported Operating Systems: Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP (all versions): Only supports two monitor display