Scan-Line Interleave
Template:Short description Template:Confused Template:Refimprove Template:Infobox Information appliance Scan-Line Interleave (SLI) is a multi-GPU method developed by 3DFX for linking two (or more) video cards or chips together to produce a single output. It is an application of parallel processing for computer graphics, meant to increase the processing power available for graphics.[1][2]
3DFX's SLI technology was first introduced in 1998 with the Voodoo2 line of graphics accelerators. The original Voodoo Graphics card and the VSA-100[3][4] were also SLI-capable. However, in the case of the former, it was only used in arcades,[5][6] as well as professional applications via Primary Image's Piranha[7][8][9] card, intended for use with simulations using various[10][11] graphics APIs such as OpenGL, Glide, or Primary Image's own Tempest API. Support for the MultiGen OpenFlight Format in particular was specifically advertised.[7][10][11]
NVIDIA reintroduced the SLI acronym in 2004 as Scalable Link Interface. NVIDIA's SLI, compared to 3DFX's SLI, is modernized to use graphics cards interfaced over the PCI Express bus.[12]
Function
3DFX's SLI design was the first attempt, in the consumer PC market, at combining the rendering power of two video cards. The two 3DFX cards were connected by a small ribbon cable inside the PC. This cable shared graphics and synchronization information between the cards. Each 3DFX card rendered alternating horizontal lines of pixels composing a frame.[1][2]
See also
- Scalable Link Interface - Nvidia
- AMD CrossFireX - AMD
References
External links
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- ↑ a b Template:Cite magazine
- ↑ a b Template:Cite magazine
- ↑ Lal Shimpi, Anand. 3DFX Voodoo5 5500, Anandtech, July 11, 2000.
- ↑ 3DFX Interview with Peter Wicher, Hot Hardware, December 15, 2001.
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