Gigabyte GV-N580D5-15I-B Manual - Page 9

How NVIDIA® SLITM (Scalable Link Interface) technology works: In an SLI configuration, two/three SLI-ready graphics cards of the same model and the same manufacturers are connected together via SLI bridge connector in a system that provides two/three x16 PCI Express slots to scale graphics performance. The picture below shows that two and three graphics cards are linked in parallel in an SLI configuration. SLI Configuration: SLI bridge connector (provided by motherboard manufacturer) Two SLI-ready graphics cards of the same type. (Example: GV-N28-1GH-B) 3-Way SLI Configuration: 3-Way SLI bridge connector (provided by motherboard manufacturer) Three SLI-ready graphics cards of the same type. (Example: GV-N28-1GH-B) - 9 - Hardware Installation