Setting up SLI - NVIDIA SLI Performance Preview with MSI's nForce4 SLI Motherboard
Can I use two Nvidia GPUs not in SLI, with one dedicated for computing, the other for display? - Quora
What is SLI? How does it work? Is it better than a single card?
SLI requires motherboard support in order to work, meaning you need multiple pcie slots AND SLI support within the bios itself. If one were to connect a dual gpu card, such as