Previous implementations of SLI
To get a better appreciation for SLI, here are some previous implementations of SLI from 1993 to 1998.
Back in 1993, if you wanted an SLI system (classed as super computer), it would have cost you upwards of $250k.
The result of this quarter of a million dollar investment was being able to play a flight simulator at just a few frames per second, as you can see below.
Fast forward a few years then we entered the exciting 3DFX VooDoo2 realm of SLI.
This technology enabled gamers to play their favorite games at relatively high resolution of 1024x768, as you can see in the shot below with Quake2. With a single VooDoo2 card, it was just about impossible to play at 1024x768 as the frame rate was very low. SLI allowed gamers to play Quake2 at 1024x768 at the same frame rate as 800x600 by increasing performance by around 20 - 25%.
Now you've got a bit of an idea about previous SLI implementations, let's take a look at nVidia's brand new SLI technology and their plan of attack for the industry.
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