Quad-SLI sparks the kind of excitement among enthusiast computer users as does the latest Ferrari among car lovers. And just like the Ferrari, quad-SLI is not only expensive, but it also requires experience with fine tuning and maintaining computers. While single and dual card solutions are easy enough to install, the quad-SLI cards require motherboard tweaks, better power supplies and a host of other changes that may be an unsolvable problem to mainstream users.
At least two US system builders have confirmed that existing agreements with Nvidia prohibit the sale of standalone quad-SLI cards. However, ultimately standalone quad-SLI cards will be available, once the issues surrounding quad-SLI have been removed.