Manual
Page 5
... supply specification or above is recommended - Optical drive for 3-way SLI configuration - An SLI certified motherboard with two/three PCIe x16 slots and correct chipset driver - Introduction GIGABYTE TECHNOLOGY). - 5 - Windows® 7 - Two GV-N580UD-3GI / GV-N580UD-15I for SLI configuration; 1. GV-N580UD-3GI / GV-N580UD-15I) and from the same vendor (e.g. Introduction 1.1.
... supply specification or above is recommended - Optical drive for 3-way SLI configuration - An SLI certified motherboard with two/three PCIe x16 slots and correct chipset driver - Introduction GIGABYTE TECHNOLOGY). - 5 - Windows® 7 - Two GV-N580UD-3GI / GV-N580UD-15I for SLI configuration; 1. GV-N580UD-3GI / GV-N580UD-15I) and from the same vendor (e.g. Introduction 1.1.