What is SLI mode?
SLI means “Scanline Interleave”. In this mode, two Pixelfx are connected and render in alternate turns, one handling odd, the other handling even scanlines of the actual output. Inthis mode, each Pixelfx stores only half of the image and half of the depth buffer data in its own local framebuffer, effectively doubling the number of pixels. The Pixelfx in question can be on the same board, or on two boards properly connected. Some Quantum3D Obsidian boards support SLI with Voodoo Graphics ™. As two cards can decode the same PCI addresses and receive the same data, there is not necessarily additional bus bandwidth required by SLI. On the other hand, texture data will have to be replicated on both boards, thus the amount of texture memory effectively stays the same.
