The Matrox C680 is a single-slot, PCIe® x16 graphics card that drives up to six displays or projectors at resolutions up to 4096 x 2160 per output.View and Download Matrox C680 user manual online. C-Series. C680 video card pdf manual download. Also for: C420. 24 Matrox C-Series – User Guide Product information Specifications Matrox C680 Matrox C420 Operating systems Windows 10, Windows 8.1, Windows Server 2012 R2 Manual for Matrox C680 PCIe x16 Graphics Card. View and download the pdf, find answers to frequently asked questions and read feedback from users. View the manual for the Matrox C-Series C680 here, for free. This manual comes under the category Video Cards and has been rated by 1 people with an average Manuals and User Guides for Matrox C680. We have 3 Matrox C680 manuals available for free PDF download: User Manual · 2. Table of Contents · 7. Matrox Safety